./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi001_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi001_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:31:52,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:31:52,349 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:31:52,356 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:31:52,356 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:31:52,397 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:31:52,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:31:52,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:31:52,400 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:31:52,404 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:31:52,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:31:52,404 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:31:52,405 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:31:52,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:31:52,407 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:31:52,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:31:52,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:31:52,408 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:31:52,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:31:52,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:31:52,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:31:52,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:31:52,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:31:52,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:31:52,410 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:31:52,410 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:31:52,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:31:52,411 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:31:52,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:31:52,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:31:52,413 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:31:52,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:31:52,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:31:52,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:31:52,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:31:52,414 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:31:52,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:31:52,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:31:52,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:31:52,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:31:52,415 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:31:52,416 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:31:52,416 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:31:52,416 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:31:52,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:31:52,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:31:52,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:31:52,671 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:31:52,671 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:31:52,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi001_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 22:31:52,772 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:31:52,773 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:31:52,776 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:31:53,928 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:31:54,211 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:31:54,211 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:31:54,226 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f6b89466/aab21157f40f4c76a09139ba57068937/FLAG8e0332bd9 [2024-06-27 22:31:54,239 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f6b89466/aab21157f40f4c76a09139ba57068937 [2024-06-27 22:31:54,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:31:54,242 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:31:54,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:31:54,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:31:54,248 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:31:54,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:31:52" (1/2) ... [2024-06-27 22:31:54,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d559a4b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:54, skipping insertion in model container [2024-06-27 22:31:54,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:31:52" (1/2) ... [2024-06-27 22:31:54,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@43539c95 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:31:54, skipping insertion in model container [2024-06-27 22:31:54,251 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:31:54" (2/2) ... [2024-06-27 22:31:54,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d559a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54, skipping insertion in model container [2024-06-27 22:31:54,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:31:54" (2/2) ... [2024-06-27 22:31:54,252 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:31:54,276 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:31:54,277 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$w_buff0) + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0_used >= 0LL) && (long long )x + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff0_used >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )y >= 0LL) && (long long )x$r_buff0_thd1 + (long long )z >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$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_buff0 + (long long )y >= 0LL) && (long long )x$w_buff0 + (long long )z >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used + (long long )y >= 0LL) && (long long )x$w_buff0_used + (long long )z >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0_used >= 0LL) && (1LL + (long long )x$w_buff0_used) - (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$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_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:31:54,278 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$flush_delayed) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0_used >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 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_buff0_used >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$w_buff0) + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0_used >= 0LL) && (long long )x + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff0_used >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0_used >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff0_thd1 + (long long )y >= 0LL) && (long long )x$r_buff0_thd1 + (long long )z >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd2 + (long long )x$w_buff0_used >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0_used >= 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$w_buff0 + (long long )y >= 0LL) && (long long )x$w_buff0 + (long long )z >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0_used + (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used + (long long )y >= 0LL) && (long long )x$w_buff0_used + (long long )z >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0_used >= 0LL) && (1LL + (long long )x$w_buff0_used) - (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff0_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$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_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:31:54,278 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:31:54,278 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-27 22:31:54,319 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:31:54,471 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/rfi001_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 22:31:54,621 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:31:54,631 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:31:54,672 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/rfi001_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:31:54,866 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:31:54,905 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:31:54,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54 WrapperNode [2024-06-27 22:31:54,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:31:54,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:31:54,907 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:31:54,908 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:31:54,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54" (1/1) ... [2024-06-27 22:31:54,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54" (1/1) ... [2024-06-27 22:31:55,020 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 110 [2024-06-27 22:31:55,020 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:31:55,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:31:55,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:31:55,022 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:31:55,033 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54" (1/1) ... [2024-06-27 22:31:55,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54" (1/1) ... [2024-06-27 22:31:55,049 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54" (1/1) ... [2024-06-27 22:31:55,077 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:31:55,077 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54" (1/1) ... [2024-06-27 22:31:55,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54" (1/1) ... [2024-06-27 22:31:55,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54" (1/1) ... [2024-06-27 22:31:55,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54" (1/1) ... [2024-06-27 22:31:55,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54" (1/1) ... [2024-06-27 22:31:55,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54" (1/1) ... [2024-06-27 22:31:55,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:31:55,132 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:31:55,132 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:31:55,132 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:31:55,133 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54" (1/1) ... [2024-06-27 22:31:55,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:31:55,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:31:55,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:31:55,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:31:55,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:31:55,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:31:55,214 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:31:55,214 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:31:55,215 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:31:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:31:55,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:31:55,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:31:55,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:31:55,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:31:55,217 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:31:55,336 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:31:55,338 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:31:55,913 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:31:55,913 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:31:56,080 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:31:56,080 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:31:56,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:31:56 BoogieIcfgContainer [2024-06-27 22:31:56,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:31:56,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:31:56,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:31:56,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:31:56,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:31:52" (1/4) ... [2024-06-27 22:31:56,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e62ad2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:31:56, skipping insertion in model container [2024-06-27 22:31:56,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:31:54" (2/4) ... [2024-06-27 22:31:56,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e62ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:31:56, skipping insertion in model container [2024-06-27 22:31:56,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:31:54" (3/4) ... [2024-06-27 22:31:56,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e62ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:31:56, skipping insertion in model container [2024-06-27 22:31:56,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:31:56" (4/4) ... [2024-06-27 22:31:56,092 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 22:31:56,109 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:31:56,109 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:31:56,110 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:31:56,172 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:31:56,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 22:31:56,270 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 22:31:56,270 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:31:56,274 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 4. Compared 54 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 22:31:56,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 22:31:56,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 22:31:56,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:31:56,295 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;@5bc68068, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:31:56,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:31:56,303 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:31:56,303 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:31:56,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:31:56,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:56,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:31:56,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:56,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:56,310 INFO L85 PathProgramCache]: Analyzing trace with hash 315654007, now seen corresponding path program 1 times [2024-06-27 22:31:56,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:56,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883197455] [2024-06-27 22:31:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:56,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:57,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:57,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:57,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883197455] [2024-06-27 22:31:57,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883197455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:57,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:57,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:31:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057349641] [2024-06-27 22:31:57,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:57,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:31:57,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:57,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:31:57,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:31:57,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:31:57,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:57,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:57,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:31:57,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:58,290 INFO L124 PetriNetUnfolderBase]: 544/1062 cut-off events. [2024-06-27 22:31:58,291 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 22:31:58,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1983 conditions, 1062 events. 544/1062 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5975 event pairs, 432 based on Foata normal form. 42/1005 useless extension candidates. Maximal degree in co-relation 1972. Up to 894 conditions per place. [2024-06-27 22:31:58,304 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 31 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-06-27 22:31:58,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 165 flow [2024-06-27 22:31:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:31:58,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:31:58,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-06-27 22:31:58,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-06-27 22:31:58,318 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 75 transitions. [2024-06-27 22:31:58,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 165 flow [2024-06-27 22:31:58,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:31:58,325 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 95 flow [2024-06-27 22:31:58,327 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 22:31:58,331 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 22:31:58,331 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 95 flow [2024-06-27 22:31:58,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:31:58,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:58,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:58,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:31:58,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:58,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:58,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1599155083, now seen corresponding path program 1 times [2024-06-27 22:31:58,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:58,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117097102] [2024-06-27 22:31:58,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:58,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:31:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:31:59,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:31:59,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117097102] [2024-06-27 22:31:59,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117097102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:31:59,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:31:59,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:31:59,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44779519] [2024-06-27 22:31:59,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:31:59,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:31:59,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:31:59,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:31:59,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:31:59,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:31:59,497 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 22:31:59,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:31:59,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:31:59,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:31:59,735 INFO L124 PetriNetUnfolderBase]: 546/1063 cut-off events. [2024-06-27 22:31:59,736 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-06-27 22:31:59,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2189 conditions, 1063 events. 546/1063 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5923 event pairs, 381 based on Foata normal form. 2/974 useless extension candidates. Maximal degree in co-relation 2177. Up to 886 conditions per place. [2024-06-27 22:31:59,742 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 37 selfloop transitions, 6 changer transitions 1/54 dead transitions. [2024-06-27 22:31:59,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 231 flow [2024-06-27 22:31:59,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:31:59,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:31:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-06-27 22:31:59,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-27 22:31:59,744 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 95 flow. Second operand 4 states and 92 transitions. [2024-06-27 22:31:59,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 231 flow [2024-06-27 22:31:59,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:31:59,747 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 141 flow [2024-06-27 22:31:59,747 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-27 22:31:59,748 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-06-27 22:31:59,748 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 141 flow [2024-06-27 22:31:59,748 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 22:31:59,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:31:59,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:31:59,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:31:59,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:31:59,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:31:59,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1965800764, now seen corresponding path program 1 times [2024-06-27 22:31:59,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:31:59,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118534298] [2024-06-27 22:31:59,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:31:59,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:31:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:00,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:00,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118534298] [2024-06-27 22:32:00,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118534298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:00,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:00,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:32:00,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003377948] [2024-06-27 22:32:00,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:00,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:32:00,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:00,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:32:00,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:32:00,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:32:00,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 141 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 22:32:00,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:00,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:32:00,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:01,049 INFO L124 PetriNetUnfolderBase]: 562/1099 cut-off events. [2024-06-27 22:32:01,049 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2024-06-27 22:32:01,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2465 conditions, 1099 events. 562/1099 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6151 event pairs, 243 based on Foata normal form. 3/1016 useless extension candidates. Maximal degree in co-relation 2450. Up to 849 conditions per place. [2024-06-27 22:32:01,058 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 48 selfloop transitions, 13 changer transitions 2/73 dead transitions. [2024-06-27 22:32:01,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 73 transitions, 359 flow [2024-06-27 22:32:01,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:01,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-27 22:32:01,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.654054054054054 [2024-06-27 22:32:01,065 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 141 flow. Second operand 5 states and 121 transitions. [2024-06-27 22:32:01,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 73 transitions, 359 flow [2024-06-27 22:32:01,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 73 transitions, 352 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:01,069 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 224 flow [2024-06-27 22:32:01,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2024-06-27 22:32:01,072 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-06-27 22:32:01,072 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 224 flow [2024-06-27 22:32:01,072 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 22:32:01,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:01,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:01,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:32:01,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:01,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:01,074 INFO L85 PathProgramCache]: Analyzing trace with hash 810282356, now seen corresponding path program 1 times [2024-06-27 22:32:01,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:01,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009105100] [2024-06-27 22:32:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:01,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:02,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:02,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:02,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009105100] [2024-06-27 22:32:02,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009105100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:02,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:02,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:02,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484358339] [2024-06-27 22:32:02,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:02,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:02,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:02,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:02,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:02,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:32:02,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:02,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:02,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:32:02,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:03,068 INFO L124 PetriNetUnfolderBase]: 571/1042 cut-off events. [2024-06-27 22:32:03,069 INFO L125 PetriNetUnfolderBase]: For 918/918 co-relation queries the response was YES. [2024-06-27 22:32:03,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2874 conditions, 1042 events. 571/1042 cut-off events. For 918/918 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5642 event pairs, 132 based on Foata normal form. 3/994 useless extension candidates. Maximal degree in co-relation 2854. Up to 791 conditions per place. [2024-06-27 22:32:03,077 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 59 selfloop transitions, 24 changer transitions 3/95 dead transitions. [2024-06-27 22:32:03,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 95 transitions, 556 flow [2024-06-27 22:32:03,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:03,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:03,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-27 22:32:03,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5868725868725869 [2024-06-27 22:32:03,080 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 224 flow. Second operand 7 states and 152 transitions. [2024-06-27 22:32:03,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 95 transitions, 556 flow [2024-06-27 22:32:03,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 95 transitions, 552 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 22:32:03,085 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 376 flow [2024-06-27 22:32:03,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-06-27 22:32:03,086 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-27 22:32:03,087 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 376 flow [2024-06-27 22:32:03,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:03,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:03,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:03,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:32:03,088 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:03,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:03,088 INFO L85 PathProgramCache]: Analyzing trace with hash -651049893, now seen corresponding path program 1 times [2024-06-27 22:32:03,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:03,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504681228] [2024-06-27 22:32:03,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:03,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:04,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:04,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504681228] [2024-06-27 22:32:04,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504681228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:04,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:04,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:04,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713228931] [2024-06-27 22:32:04,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:04,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:04,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:04,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:04,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:04,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 22:32:04,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 376 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 22:32:04,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:04,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 22:32:04,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:04,962 INFO L124 PetriNetUnfolderBase]: 584/1065 cut-off events. [2024-06-27 22:32:04,962 INFO L125 PetriNetUnfolderBase]: For 1788/1788 co-relation queries the response was YES. [2024-06-27 22:32:04,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3492 conditions, 1065 events. 584/1065 cut-off events. For 1788/1788 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5817 event pairs, 86 based on Foata normal form. 6/1020 useless extension candidates. Maximal degree in co-relation 3466. Up to 756 conditions per place. [2024-06-27 22:32:04,973 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 62 selfloop transitions, 25 changer transitions 4/101 dead transitions. [2024-06-27 22:32:04,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 101 transitions, 684 flow [2024-06-27 22:32:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:04,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 22:32:04,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6293436293436293 [2024-06-27 22:32:04,975 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 376 flow. Second operand 7 states and 163 transitions. [2024-06-27 22:32:04,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 101 transitions, 684 flow [2024-06-27 22:32:04,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 101 transitions, 662 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:04,985 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 421 flow [2024-06-27 22:32:04,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=421, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-06-27 22:32:04,989 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-06-27 22:32:04,989 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 421 flow [2024-06-27 22:32:04,990 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 22:32:04,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:04,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:04,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:32:04,996 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:04,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:04,996 INFO L85 PathProgramCache]: Analyzing trace with hash -981548492, now seen corresponding path program 1 times [2024-06-27 22:32:04,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:04,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278774831] [2024-06-27 22:32:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:04,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:06,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:06,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278774831] [2024-06-27 22:32:06,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278774831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:06,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:06,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:32:06,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737231148] [2024-06-27 22:32:06,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:06,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:32:06,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:06,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:32:06,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:32:06,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:32:06,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 421 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:06,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:06,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:32:06,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:07,032 INFO L124 PetriNetUnfolderBase]: 669/1286 cut-off events. [2024-06-27 22:32:07,033 INFO L125 PetriNetUnfolderBase]: For 2405/2405 co-relation queries the response was YES. [2024-06-27 22:32:07,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4119 conditions, 1286 events. 669/1286 cut-off events. For 2405/2405 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7310 event pairs, 257 based on Foata normal form. 1/1200 useless extension candidates. Maximal degree in co-relation 4090. Up to 1081 conditions per place. [2024-06-27 22:32:07,043 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 56 selfloop transitions, 12 changer transitions 0/76 dead transitions. [2024-06-27 22:32:07,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 76 transitions, 603 flow [2024-06-27 22:32:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:07,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:07,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-06-27 22:32:07,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518918918918919 [2024-06-27 22:32:07,045 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 421 flow. Second operand 5 states and 96 transitions. [2024-06-27 22:32:07,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 76 transitions, 603 flow [2024-06-27 22:32:07,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 542 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:07,055 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 417 flow [2024-06-27 22:32:07,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-27 22:32:07,058 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-06-27 22:32:07,058 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 417 flow [2024-06-27 22:32:07,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:07,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:07,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:07,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:32:07,059 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:07,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:07,059 INFO L85 PathProgramCache]: Analyzing trace with hash -363193871, now seen corresponding path program 1 times [2024-06-27 22:32:07,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:07,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225902542] [2024-06-27 22:32:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:07,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:07,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:07,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225902542] [2024-06-27 22:32:07,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225902542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:07,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:07,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:32:07,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182731713] [2024-06-27 22:32:07,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:07,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:32:07,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:07,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:32:07,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:32:07,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-06-27 22:32:07,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 417 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:07,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:07,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-06-27 22:32:07,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:07,290 INFO L124 PetriNetUnfolderBase]: 272/674 cut-off events. [2024-06-27 22:32:07,291 INFO L125 PetriNetUnfolderBase]: For 956/994 co-relation queries the response was YES. [2024-06-27 22:32:07,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1880 conditions, 674 events. 272/674 cut-off events. For 956/994 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4183 event pairs, 103 based on Foata normal form. 8/628 useless extension candidates. Maximal degree in co-relation 1849. Up to 386 conditions per place. [2024-06-27 22:32:07,298 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 31 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2024-06-27 22:32:07,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 511 flow [2024-06-27 22:32:07,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:32:07,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:32:07,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-06-27 22:32:07,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7657657657657657 [2024-06-27 22:32:07,299 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 417 flow. Second operand 3 states and 85 transitions. [2024-06-27 22:32:07,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 511 flow [2024-06-27 22:32:07,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 73 transitions, 493 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:07,305 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 405 flow [2024-06-27 22:32:07,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-27 22:32:07,307 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-06-27 22:32:07,307 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 405 flow [2024-06-27 22:32:07,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:07,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:07,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:07,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:32:07,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:07,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:07,308 INFO L85 PathProgramCache]: Analyzing trace with hash -397394639, now seen corresponding path program 1 times [2024-06-27 22:32:07,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:07,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29203822] [2024-06-27 22:32:07,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:07,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:08,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:08,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29203822] [2024-06-27 22:32:08,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29203822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:08,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:08,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:08,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082305186] [2024-06-27 22:32:08,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:08,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:08,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:08,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:08,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:09,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:09,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 405 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 22:32:09,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:09,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:09,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:09,593 INFO L124 PetriNetUnfolderBase]: 682/1291 cut-off events. [2024-06-27 22:32:09,594 INFO L125 PetriNetUnfolderBase]: For 2483/2483 co-relation queries the response was YES. [2024-06-27 22:32:09,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3952 conditions, 1291 events. 682/1291 cut-off events. For 2483/2483 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7026 event pairs, 233 based on Foata normal form. 1/1243 useless extension candidates. Maximal degree in co-relation 3920. Up to 1088 conditions per place. [2024-06-27 22:32:09,603 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 58 selfloop transitions, 14 changer transitions 4/83 dead transitions. [2024-06-27 22:32:09,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 611 flow [2024-06-27 22:32:09,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-27 22:32:09,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:32:09,607 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 405 flow. Second operand 6 states and 108 transitions. [2024-06-27 22:32:09,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 611 flow [2024-06-27 22:32:09,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 83 transitions, 595 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:09,616 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 439 flow [2024-06-27 22:32:09,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-06-27 22:32:09,618 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-06-27 22:32:09,618 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 439 flow [2024-06-27 22:32:09,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 22:32:09,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:09,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:09,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:32:09,619 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:09,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:09,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1966583946, now seen corresponding path program 1 times [2024-06-27 22:32:09,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:09,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559454772] [2024-06-27 22:32:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:09,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:11,032 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 22:32:11,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:11,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559454772] [2024-06-27 22:32:11,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559454772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:11,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:11,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:11,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360112251] [2024-06-27 22:32:11,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:11,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:11,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:11,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:11,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:11,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:32:11,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 439 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 22:32:11,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:11,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:32:11,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:11,452 INFO L124 PetriNetUnfolderBase]: 602/1179 cut-off events. [2024-06-27 22:32:11,453 INFO L125 PetriNetUnfolderBase]: For 2941/2941 co-relation queries the response was YES. [2024-06-27 22:32:11,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3951 conditions, 1179 events. 602/1179 cut-off events. For 2941/2941 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6492 event pairs, 146 based on Foata normal form. 2/1137 useless extension candidates. Maximal degree in co-relation 3916. Up to 903 conditions per place. [2024-06-27 22:32:11,462 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 65 selfloop transitions, 17 changer transitions 0/91 dead transitions. [2024-06-27 22:32:11,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 754 flow [2024-06-27 22:32:11,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-27 22:32:11,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:32:11,464 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 439 flow. Second operand 6 states and 114 transitions. [2024-06-27 22:32:11,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 754 flow [2024-06-27 22:32:11,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 91 transitions, 720 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:11,471 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 535 flow [2024-06-27 22:32:11,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=535, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-06-27 22:32:11,472 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-27 22:32:11,472 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 535 flow [2024-06-27 22:32:11,472 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 22:32:11,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:11,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:11,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:32:11,473 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:11,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:11,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1624730354, now seen corresponding path program 2 times [2024-06-27 22:32:11,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:11,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941841631] [2024-06-27 22:32:11,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:11,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:12,659 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 22:32:12,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:12,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941841631] [2024-06-27 22:32:12,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941841631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:12,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:12,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:12,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114765555] [2024-06-27 22:32:12,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:12,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:12,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:12,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:12,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:12,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:32:12,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 535 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 22:32:12,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:12,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:32:12,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:13,125 INFO L124 PetriNetUnfolderBase]: 608/1199 cut-off events. [2024-06-27 22:32:13,125 INFO L125 PetriNetUnfolderBase]: For 3438/3438 co-relation queries the response was YES. [2024-06-27 22:32:13,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4167 conditions, 1199 events. 608/1199 cut-off events. For 3438/3438 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6736 event pairs, 190 based on Foata normal form. 1/1159 useless extension candidates. Maximal degree in co-relation 4131. Up to 977 conditions per place. [2024-06-27 22:32:13,136 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 65 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-06-27 22:32:13,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 86 transitions, 735 flow [2024-06-27 22:32:13,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:13,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:13,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-27 22:32:13,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481981981981982 [2024-06-27 22:32:13,138 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 535 flow. Second operand 6 states and 107 transitions. [2024-06-27 22:32:13,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 86 transitions, 735 flow [2024-06-27 22:32:13,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 723 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:13,152 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 568 flow [2024-06-27 22:32:13,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2024-06-27 22:32:13,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2024-06-27 22:32:13,154 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 568 flow [2024-06-27 22:32:13,154 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 22:32:13,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:13,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:13,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:32:13,157 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:13,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:13,157 INFO L85 PathProgramCache]: Analyzing trace with hash 988011510, now seen corresponding path program 3 times [2024-06-27 22:32:13,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:13,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205681093] [2024-06-27 22:32:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:13,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:14,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:14,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205681093] [2024-06-27 22:32:14,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205681093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:14,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:14,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:14,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014295219] [2024-06-27 22:32:14,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:14,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:14,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:14,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:14,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:14,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:32:14,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 568 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 22:32:14,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:14,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:32:14,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:15,138 INFO L124 PetriNetUnfolderBase]: 633/1264 cut-off events. [2024-06-27 22:32:15,138 INFO L125 PetriNetUnfolderBase]: For 4140/4140 co-relation queries the response was YES. [2024-06-27 22:32:15,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4507 conditions, 1264 events. 633/1264 cut-off events. For 4140/4140 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7171 event pairs, 158 based on Foata normal form. 2/1219 useless extension candidates. Maximal degree in co-relation 4469. Up to 909 conditions per place. [2024-06-27 22:32:15,151 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 80 selfloop transitions, 36 changer transitions 0/125 dead transitions. [2024-06-27 22:32:15,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 125 transitions, 1232 flow [2024-06-27 22:32:15,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:15,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-27 22:32:15,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057915057915058 [2024-06-27 22:32:15,153 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 568 flow. Second operand 7 states and 131 transitions. [2024-06-27 22:32:15,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 125 transitions, 1232 flow [2024-06-27 22:32:15,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 125 transitions, 1192 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:15,164 INFO L231 Difference]: Finished difference. Result has 81 places, 101 transitions, 973 flow [2024-06-27 22:32:15,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=973, PETRI_PLACES=81, PETRI_TRANSITIONS=101} [2024-06-27 22:32:15,164 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 40 predicate places. [2024-06-27 22:32:15,165 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 101 transitions, 973 flow [2024-06-27 22:32:15,165 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 22:32:15,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:15,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:15,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:32:15,166 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:15,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:15,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1624739251, now seen corresponding path program 1 times [2024-06-27 22:32:15,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:15,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60480483] [2024-06-27 22:32:15,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:15,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:17,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:17,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60480483] [2024-06-27 22:32:17,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60480483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:17,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:17,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:17,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12529202] [2024-06-27 22:32:17,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:17,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:17,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:17,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:17,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:17,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 101 transitions, 973 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:32:17,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:17,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:17,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:17,691 INFO L124 PetriNetUnfolderBase]: 670/1293 cut-off events. [2024-06-27 22:32:17,692 INFO L125 PetriNetUnfolderBase]: For 4931/4931 co-relation queries the response was YES. [2024-06-27 22:32:17,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5005 conditions, 1293 events. 670/1293 cut-off events. For 4931/4931 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7177 event pairs, 180 based on Foata normal form. 3/1250 useless extension candidates. Maximal degree in co-relation 4965. Up to 1036 conditions per place. [2024-06-27 22:32:17,705 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 102 selfloop transitions, 16 changer transitions 0/125 dead transitions. [2024-06-27 22:32:17,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 125 transitions, 1287 flow [2024-06-27 22:32:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:17,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-27 22:32:17,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44256756756756754 [2024-06-27 22:32:17,707 INFO L175 Difference]: Start difference. First operand has 81 places, 101 transitions, 973 flow. Second operand 8 states and 131 transitions. [2024-06-27 22:32:17,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 125 transitions, 1287 flow [2024-06-27 22:32:17,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 125 transitions, 1267 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:17,721 INFO L231 Difference]: Finished difference. Result has 88 places, 103 transitions, 1006 flow [2024-06-27 22:32:17,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1006, PETRI_PLACES=88, PETRI_TRANSITIONS=103} [2024-06-27 22:32:17,722 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2024-06-27 22:32:17,723 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 103 transitions, 1006 flow [2024-06-27 22:32:17,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:32:17,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:17,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:17,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:32:17,724 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:17,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:17,725 INFO L85 PathProgramCache]: Analyzing trace with hash 149870451, now seen corresponding path program 1 times [2024-06-27 22:32:17,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:17,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779886853] [2024-06-27 22:32:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:17,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:19,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:19,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779886853] [2024-06-27 22:32:19,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779886853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:19,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:19,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:19,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839388954] [2024-06-27 22:32:19,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:19,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:19,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:19,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:19,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:19,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:19,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 103 transitions, 1006 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:32:19,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:19,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:19,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:19,486 INFO L124 PetriNetUnfolderBase]: 718/1423 cut-off events. [2024-06-27 22:32:19,487 INFO L125 PetriNetUnfolderBase]: For 5493/5493 co-relation queries the response was YES. [2024-06-27 22:32:19,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5439 conditions, 1423 events. 718/1423 cut-off events. For 5493/5493 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8058 event pairs, 191 based on Foata normal form. 2/1365 useless extension candidates. Maximal degree in co-relation 5396. Up to 978 conditions per place. [2024-06-27 22:32:19,512 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 98 selfloop transitions, 33 changer transitions 0/138 dead transitions. [2024-06-27 22:32:19,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 138 transitions, 1443 flow [2024-06-27 22:32:19,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 22:32:19,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-27 22:32:19,514 INFO L175 Difference]: Start difference. First operand has 88 places, 103 transitions, 1006 flow. Second operand 7 states and 128 transitions. [2024-06-27 22:32:19,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 138 transitions, 1443 flow [2024-06-27 22:32:19,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 138 transitions, 1399 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 22:32:19,529 INFO L231 Difference]: Finished difference. Result has 90 places, 111 transitions, 1106 flow [2024-06-27 22:32:19,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1106, PETRI_PLACES=90, PETRI_TRANSITIONS=111} [2024-06-27 22:32:19,530 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 49 predicate places. [2024-06-27 22:32:19,530 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 111 transitions, 1106 flow [2024-06-27 22:32:19,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:32:19,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:19,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:19,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:32:19,531 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:19,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1172699507, now seen corresponding path program 2 times [2024-06-27 22:32:19,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:19,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613566774] [2024-06-27 22:32:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:19,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:20,703 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 22:32:20,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:20,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613566774] [2024-06-27 22:32:20,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613566774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:20,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:20,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:20,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739684560] [2024-06-27 22:32:20,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:20,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:20,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:20,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:20,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:20,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:20,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 111 transitions, 1106 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:32:20,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:20,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:20,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:21,231 INFO L124 PetriNetUnfolderBase]: 729/1410 cut-off events. [2024-06-27 22:32:21,232 INFO L125 PetriNetUnfolderBase]: For 6339/6339 co-relation queries the response was YES. [2024-06-27 22:32:21,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5762 conditions, 1410 events. 729/1410 cut-off events. For 6339/6339 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7999 event pairs, 197 based on Foata normal form. 1/1359 useless extension candidates. Maximal degree in co-relation 5717. Up to 1161 conditions per place. [2024-06-27 22:32:21,244 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 107 selfloop transitions, 15 changer transitions 0/129 dead transitions. [2024-06-27 22:32:21,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 129 transitions, 1414 flow [2024-06-27 22:32:21,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:21,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:21,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-27 22:32:21,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517374517374517 [2024-06-27 22:32:21,246 INFO L175 Difference]: Start difference. First operand has 90 places, 111 transitions, 1106 flow. Second operand 7 states and 117 transitions. [2024-06-27 22:32:21,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 129 transitions, 1414 flow [2024-06-27 22:32:21,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 129 transitions, 1389 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:21,264 INFO L231 Difference]: Finished difference. Result has 95 places, 113 transitions, 1134 flow [2024-06-27 22:32:21,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1134, PETRI_PLACES=95, PETRI_TRANSITIONS=113} [2024-06-27 22:32:21,265 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 54 predicate places. [2024-06-27 22:32:21,265 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 113 transitions, 1134 flow [2024-06-27 22:32:21,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:32:21,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:21,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:21,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:32:21,266 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:21,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:21,266 INFO L85 PathProgramCache]: Analyzing trace with hash 355601331, now seen corresponding path program 3 times [2024-06-27 22:32:21,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:21,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777794300] [2024-06-27 22:32:21,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:21,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:22,518 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 22:32:22,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:22,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777794300] [2024-06-27 22:32:22,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777794300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:22,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:22,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:22,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656611411] [2024-06-27 22:32:22,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:22,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:22,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:22,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:22,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:22,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:22,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 113 transitions, 1134 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:32:22,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:22,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:22,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:23,003 INFO L124 PetriNetUnfolderBase]: 727/1407 cut-off events. [2024-06-27 22:32:23,003 INFO L125 PetriNetUnfolderBase]: For 6904/6904 co-relation queries the response was YES. [2024-06-27 22:32:23,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5848 conditions, 1407 events. 727/1407 cut-off events. For 6904/6904 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7984 event pairs, 199 based on Foata normal form. 1/1356 useless extension candidates. Maximal degree in co-relation 5800. Up to 1134 conditions per place. [2024-06-27 22:32:23,017 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 109 selfloop transitions, 20 changer transitions 0/136 dead transitions. [2024-06-27 22:32:23,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 136 transitions, 1488 flow [2024-06-27 22:32:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:23,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 22:32:23,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46332046332046334 [2024-06-27 22:32:23,019 INFO L175 Difference]: Start difference. First operand has 95 places, 113 transitions, 1134 flow. Second operand 7 states and 120 transitions. [2024-06-27 22:32:23,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 136 transitions, 1488 flow [2024-06-27 22:32:23,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 136 transitions, 1438 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 22:32:23,037 INFO L231 Difference]: Finished difference. Result has 96 places, 115 transitions, 1153 flow [2024-06-27 22:32:23,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1153, PETRI_PLACES=96, PETRI_TRANSITIONS=115} [2024-06-27 22:32:23,039 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 55 predicate places. [2024-06-27 22:32:23,039 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 115 transitions, 1153 flow [2024-06-27 22:32:23,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:32:23,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:23,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:23,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:32:23,040 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:23,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:23,041 INFO L85 PathProgramCache]: Analyzing trace with hash 563586829, now seen corresponding path program 4 times [2024-06-27 22:32:23,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:23,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997867202] [2024-06-27 22:32:23,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:23,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:24,619 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 22:32:24,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:24,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997867202] [2024-06-27 22:32:24,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997867202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:24,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:24,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:24,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165903867] [2024-06-27 22:32:24,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:24,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:24,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:24,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:24,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:24,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:24,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 115 transitions, 1153 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:32:24,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:24,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:24,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:25,297 INFO L124 PetriNetUnfolderBase]: 761/1460 cut-off events. [2024-06-27 22:32:25,298 INFO L125 PetriNetUnfolderBase]: For 7692/7692 co-relation queries the response was YES. [2024-06-27 22:32:25,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6158 conditions, 1460 events. 761/1460 cut-off events. For 7692/7692 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8325 event pairs, 173 based on Foata normal form. 2/1409 useless extension candidates. Maximal degree in co-relation 6111. Up to 1005 conditions per place. [2024-06-27 22:32:25,311 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 112 selfloop transitions, 55 changer transitions 0/174 dead transitions. [2024-06-27 22:32:25,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 174 transitions, 1936 flow [2024-06-27 22:32:25,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:32:25,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 22:32:25,313 INFO L175 Difference]: Start difference. First operand has 96 places, 115 transitions, 1153 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:32:25,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 174 transitions, 1936 flow [2024-06-27 22:32:25,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 174 transitions, 1849 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:25,339 INFO L231 Difference]: Finished difference. Result has 100 places, 139 transitions, 1430 flow [2024-06-27 22:32:25,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1430, PETRI_PLACES=100, PETRI_TRANSITIONS=139} [2024-06-27 22:32:25,340 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 59 predicate places. [2024-06-27 22:32:25,341 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 139 transitions, 1430 flow [2024-06-27 22:32:25,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 22:32:25,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:25,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:25,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:32:25,342 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:25,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:25,342 INFO L85 PathProgramCache]: Analyzing trace with hash 347202575, now seen corresponding path program 1 times [2024-06-27 22:32:25,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:25,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440835694] [2024-06-27 22:32:25,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:25,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:27,112 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 22:32:27,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:27,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440835694] [2024-06-27 22:32:27,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440835694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:27,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:27,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:27,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192466837] [2024-06-27 22:32:27,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:27,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:27,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:27,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:27,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:27,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:32:27,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 139 transitions, 1430 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:27,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:27,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:32:27,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:27,613 INFO L124 PetriNetUnfolderBase]: 766/1404 cut-off events. [2024-06-27 22:32:27,613 INFO L125 PetriNetUnfolderBase]: For 9158/9158 co-relation queries the response was YES. [2024-06-27 22:32:27,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6606 conditions, 1404 events. 766/1404 cut-off events. For 9158/9158 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7704 event pairs, 163 based on Foata normal form. 1/1374 useless extension candidates. Maximal degree in co-relation 6557. Up to 1027 conditions per place. [2024-06-27 22:32:27,621 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 114 selfloop transitions, 36 changer transitions 0/175 dead transitions. [2024-06-27 22:32:27,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 175 transitions, 1962 flow [2024-06-27 22:32:27,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:27,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:27,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-27 22:32:27,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:32:27,624 INFO L175 Difference]: Start difference. First operand has 100 places, 139 transitions, 1430 flow. Second operand 7 states and 133 transitions. [2024-06-27 22:32:27,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 175 transitions, 1962 flow [2024-06-27 22:32:27,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 175 transitions, 1916 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:27,653 INFO L231 Difference]: Finished difference. Result has 107 places, 148 transitions, 1561 flow [2024-06-27 22:32:27,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1561, PETRI_PLACES=107, PETRI_TRANSITIONS=148} [2024-06-27 22:32:27,653 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2024-06-27 22:32:27,654 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 148 transitions, 1561 flow [2024-06-27 22:32:27,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:27,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:27,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:27,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:32:27,654 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:27,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash -105251945, now seen corresponding path program 2 times [2024-06-27 22:32:27,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:27,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215567522] [2024-06-27 22:32:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:27,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:29,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215567522] [2024-06-27 22:32:29,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215567522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:29,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:29,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:29,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027528088] [2024-06-27 22:32:29,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:29,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:29,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:29,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:29,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:29,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:32:29,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 148 transitions, 1561 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:29,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:29,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:32:29,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:29,784 INFO L124 PetriNetUnfolderBase]: 765/1411 cut-off events. [2024-06-27 22:32:29,785 INFO L125 PetriNetUnfolderBase]: For 10217/10217 co-relation queries the response was YES. [2024-06-27 22:32:29,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6925 conditions, 1411 events. 765/1411 cut-off events. For 10217/10217 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7823 event pairs, 160 based on Foata normal form. 1/1380 useless extension candidates. Maximal degree in co-relation 6871. Up to 1066 conditions per place. [2024-06-27 22:32:29,799 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 108 selfloop transitions, 43 changer transitions 0/176 dead transitions. [2024-06-27 22:32:29,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 176 transitions, 2040 flow [2024-06-27 22:32:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:29,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:29,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-27 22:32:29,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057915057915058 [2024-06-27 22:32:29,801 INFO L175 Difference]: Start difference. First operand has 107 places, 148 transitions, 1561 flow. Second operand 7 states and 131 transitions. [2024-06-27 22:32:29,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 176 transitions, 2040 flow [2024-06-27 22:32:29,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 176 transitions, 2020 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:29,827 INFO L231 Difference]: Finished difference. Result has 114 places, 155 transitions, 1773 flow [2024-06-27 22:32:29,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1773, PETRI_PLACES=114, PETRI_TRANSITIONS=155} [2024-06-27 22:32:29,828 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 73 predicate places. [2024-06-27 22:32:29,828 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 155 transitions, 1773 flow [2024-06-27 22:32:29,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:29,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:29,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:29,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:32:29,829 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:29,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:29,829 INFO L85 PathProgramCache]: Analyzing trace with hash 351012010, now seen corresponding path program 1 times [2024-06-27 22:32:29,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:29,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432201654] [2024-06-27 22:32:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:29,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:31,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:31,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432201654] [2024-06-27 22:32:31,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432201654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:31,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:31,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:31,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45570886] [2024-06-27 22:32:31,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:31,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:31,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:31,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:31,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:31,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:31,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 155 transitions, 1773 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:31,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:31,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:31,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:31,574 INFO L124 PetriNetUnfolderBase]: 824/1559 cut-off events. [2024-06-27 22:32:31,574 INFO L125 PetriNetUnfolderBase]: For 11278/11278 co-relation queries the response was YES. [2024-06-27 22:32:31,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7629 conditions, 1559 events. 824/1559 cut-off events. For 11278/11278 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8958 event pairs, 189 based on Foata normal form. 1/1504 useless extension candidates. Maximal degree in co-relation 7571. Up to 1103 conditions per place. [2024-06-27 22:32:31,587 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 124 selfloop transitions, 59 changer transitions 0/190 dead transitions. [2024-06-27 22:32:31,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 190 transitions, 2378 flow [2024-06-27 22:32:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:31,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 22:32:31,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980694980694981 [2024-06-27 22:32:31,589 INFO L175 Difference]: Start difference. First operand has 114 places, 155 transitions, 1773 flow. Second operand 7 states and 129 transitions. [2024-06-27 22:32:31,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 190 transitions, 2378 flow [2024-06-27 22:32:31,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 190 transitions, 2300 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:31,618 INFO L231 Difference]: Finished difference. Result has 118 places, 162 transitions, 1937 flow [2024-06-27 22:32:31,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1937, PETRI_PLACES=118, PETRI_TRANSITIONS=162} [2024-06-27 22:32:31,619 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2024-06-27 22:32:31,619 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 162 transitions, 1937 flow [2024-06-27 22:32:31,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:31,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:31,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:31,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:32:31,620 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:31,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:31,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1210075571, now seen corresponding path program 1 times [2024-06-27 22:32:31,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:31,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639928683] [2024-06-27 22:32:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:31,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:32,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:32,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639928683] [2024-06-27 22:32:32,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639928683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:32,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:32,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:32,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714538418] [2024-06-27 22:32:32,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:32,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:32,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:32,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:32,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:32,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:32,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 162 transitions, 1937 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:32,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:32,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:32,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:33,450 INFO L124 PetriNetUnfolderBase]: 968/1824 cut-off events. [2024-06-27 22:32:33,450 INFO L125 PetriNetUnfolderBase]: For 15125/15125 co-relation queries the response was YES. [2024-06-27 22:32:33,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8934 conditions, 1824 events. 968/1824 cut-off events. For 15125/15125 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10814 event pairs, 223 based on Foata normal form. 6/1764 useless extension candidates. Maximal degree in co-relation 8874. Up to 1104 conditions per place. [2024-06-27 22:32:33,466 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 143 selfloop transitions, 54 changer transitions 0/204 dead transitions. [2024-06-27 22:32:33,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 204 transitions, 2569 flow [2024-06-27 22:32:33,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:33,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 22:32:33,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-27 22:32:33,467 INFO L175 Difference]: Start difference. First operand has 118 places, 162 transitions, 1937 flow. Second operand 8 states and 151 transitions. [2024-06-27 22:32:33,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 204 transitions, 2569 flow [2024-06-27 22:32:33,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 204 transitions, 2458 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:33,502 INFO L231 Difference]: Finished difference. Result has 123 places, 170 transitions, 2025 flow [2024-06-27 22:32:33,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2025, PETRI_PLACES=123, PETRI_TRANSITIONS=170} [2024-06-27 22:32:33,502 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-27 22:32:33,503 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 170 transitions, 2025 flow [2024-06-27 22:32:33,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:33,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:33,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:33,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:32:33,503 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:33,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:33,504 INFO L85 PathProgramCache]: Analyzing trace with hash 351017590, now seen corresponding path program 2 times [2024-06-27 22:32:33,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:33,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808835288] [2024-06-27 22:32:33,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:33,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:34,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:34,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808835288] [2024-06-27 22:32:34,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808835288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:34,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:34,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:34,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446547175] [2024-06-27 22:32:34,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:34,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:34,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:34,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:34,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:34,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 170 transitions, 2025 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:34,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:34,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:34,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:35,230 INFO L124 PetriNetUnfolderBase]: 983/1846 cut-off events. [2024-06-27 22:32:35,230 INFO L125 PetriNetUnfolderBase]: For 16100/16100 co-relation queries the response was YES. [2024-06-27 22:32:35,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9507 conditions, 1846 events. 983/1846 cut-off events. For 16100/16100 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10956 event pairs, 230 based on Foata normal form. 1/1781 useless extension candidates. Maximal degree in co-relation 9444. Up to 1341 conditions per place. [2024-06-27 22:32:35,244 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 130 selfloop transitions, 63 changer transitions 0/200 dead transitions. [2024-06-27 22:32:35,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 200 transitions, 2608 flow [2024-06-27 22:32:35,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:35,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 22:32:35,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49034749034749037 [2024-06-27 22:32:35,245 INFO L175 Difference]: Start difference. First operand has 123 places, 170 transitions, 2025 flow. Second operand 7 states and 127 transitions. [2024-06-27 22:32:35,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 200 transitions, 2608 flow [2024-06-27 22:32:35,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 200 transitions, 2556 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:35,286 INFO L231 Difference]: Finished difference. Result has 127 places, 176 transitions, 2178 flow [2024-06-27 22:32:35,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2178, PETRI_PLACES=127, PETRI_TRANSITIONS=176} [2024-06-27 22:32:35,287 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2024-06-27 22:32:35,287 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 176 transitions, 2178 flow [2024-06-27 22:32:35,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:35,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:35,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:35,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:32:35,288 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:35,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:35,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1171021707, now seen corresponding path program 2 times [2024-06-27 22:32:35,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:35,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498501096] [2024-06-27 22:32:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:35,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:36,800 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 22:32:36,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:36,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498501096] [2024-06-27 22:32:36,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498501096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:36,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:36,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:36,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011280955] [2024-06-27 22:32:36,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:36,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:36,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:36,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:36,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:36,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:36,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 176 transitions, 2178 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:36,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:36,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:36,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:37,391 INFO L124 PetriNetUnfolderBase]: 1042/1924 cut-off events. [2024-06-27 22:32:37,391 INFO L125 PetriNetUnfolderBase]: For 18731/18731 co-relation queries the response was YES. [2024-06-27 22:32:37,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10080 conditions, 1924 events. 1042/1924 cut-off events. For 18731/18731 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11305 event pairs, 221 based on Foata normal form. 3/1868 useless extension candidates. Maximal degree in co-relation 10014. Up to 1499 conditions per place. [2024-06-27 22:32:37,407 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 182 selfloop transitions, 30 changer transitions 0/219 dead transitions. [2024-06-27 22:32:37,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 219 transitions, 2886 flow [2024-06-27 22:32:37,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 22:32:37,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 22:32:37,410 INFO L175 Difference]: Start difference. First operand has 127 places, 176 transitions, 2178 flow. Second operand 8 states and 144 transitions. [2024-06-27 22:32:37,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 219 transitions, 2886 flow [2024-06-27 22:32:37,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 219 transitions, 2774 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:37,457 INFO L231 Difference]: Finished difference. Result has 133 places, 184 transitions, 2243 flow [2024-06-27 22:32:37,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2243, PETRI_PLACES=133, PETRI_TRANSITIONS=184} [2024-06-27 22:32:37,458 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-06-27 22:32:37,458 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 184 transitions, 2243 flow [2024-06-27 22:32:37,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:37,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:37,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:37,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:32:37,459 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:37,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:37,459 INFO L85 PathProgramCache]: Analyzing trace with hash -271143259, now seen corresponding path program 3 times [2024-06-27 22:32:37,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:37,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722720525] [2024-06-27 22:32:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:37,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:38,684 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 22:32:38,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:38,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722720525] [2024-06-27 22:32:38,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722720525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:38,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:38,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:38,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577853748] [2024-06-27 22:32:38,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:38,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:38,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:38,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:38,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:38,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:38,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 184 transitions, 2243 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:38,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:38,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:38,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:39,314 INFO L124 PetriNetUnfolderBase]: 1071/1980 cut-off events. [2024-06-27 22:32:39,314 INFO L125 PetriNetUnfolderBase]: For 21386/21386 co-relation queries the response was YES. [2024-06-27 22:32:39,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10684 conditions, 1980 events. 1071/1980 cut-off events. For 21386/21386 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11736 event pairs, 230 based on Foata normal form. 5/1923 useless extension candidates. Maximal degree in co-relation 10614. Up to 1632 conditions per place. [2024-06-27 22:32:39,331 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 179 selfloop transitions, 21 changer transitions 0/207 dead transitions. [2024-06-27 22:32:39,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 207 transitions, 2753 flow [2024-06-27 22:32:39,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-27 22:32:39,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:32:39,333 INFO L175 Difference]: Start difference. First operand has 133 places, 184 transitions, 2243 flow. Second operand 9 states and 144 transitions. [2024-06-27 22:32:39,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 207 transitions, 2753 flow [2024-06-27 22:32:39,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 207 transitions, 2723 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:39,390 INFO L231 Difference]: Finished difference. Result has 139 places, 186 transitions, 2294 flow [2024-06-27 22:32:39,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2294, PETRI_PLACES=139, PETRI_TRANSITIONS=186} [2024-06-27 22:32:39,391 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 98 predicate places. [2024-06-27 22:32:39,391 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 186 transitions, 2294 flow [2024-06-27 22:32:39,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:39,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:39,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:39,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:32:39,392 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:39,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:39,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1756151955, now seen corresponding path program 4 times [2024-06-27 22:32:39,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:39,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600271357] [2024-06-27 22:32:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:39,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:40,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:40,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600271357] [2024-06-27 22:32:40,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600271357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:40,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:40,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:40,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681293871] [2024-06-27 22:32:40,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:40,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:40,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:40,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:40,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:40,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:40,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 186 transitions, 2294 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:40,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:40,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:40,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:41,166 INFO L124 PetriNetUnfolderBase]: 1065/1971 cut-off events. [2024-06-27 22:32:41,166 INFO L125 PetriNetUnfolderBase]: For 20889/20889 co-relation queries the response was YES. [2024-06-27 22:32:41,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10623 conditions, 1971 events. 1065/1971 cut-off events. For 20889/20889 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11693 event pairs, 226 based on Foata normal form. 3/1912 useless extension candidates. Maximal degree in co-relation 10550. Up to 1604 conditions per place. [2024-06-27 22:32:41,179 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 185 selfloop transitions, 23 changer transitions 0/215 dead transitions. [2024-06-27 22:32:41,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 215 transitions, 2860 flow [2024-06-27 22:32:41,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:41,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 22:32:41,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-27 22:32:41,180 INFO L175 Difference]: Start difference. First operand has 139 places, 186 transitions, 2294 flow. Second operand 8 states and 139 transitions. [2024-06-27 22:32:41,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 215 transitions, 2860 flow [2024-06-27 22:32:41,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 215 transitions, 2729 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 22:32:41,230 INFO L231 Difference]: Finished difference. Result has 140 places, 187 transitions, 2248 flow [2024-06-27 22:32:41,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2178, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2248, PETRI_PLACES=140, PETRI_TRANSITIONS=187} [2024-06-27 22:32:41,231 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-27 22:32:41,231 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 187 transitions, 2248 flow [2024-06-27 22:32:41,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:41,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:41,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:41,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:32:41,232 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:41,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:41,232 INFO L85 PathProgramCache]: Analyzing trace with hash -271439216, now seen corresponding path program 3 times [2024-06-27 22:32:41,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:41,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389562651] [2024-06-27 22:32:41,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:41,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:42,324 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 22:32:42,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:42,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389562651] [2024-06-27 22:32:42,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389562651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:42,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:42,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:42,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017435231] [2024-06-27 22:32:42,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:42,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:42,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:42,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:42,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:42,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:42,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 187 transitions, 2248 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:42,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:42,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:42,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:42,816 INFO L124 PetriNetUnfolderBase]: 1063/1967 cut-off events. [2024-06-27 22:32:42,816 INFO L125 PetriNetUnfolderBase]: For 19405/19405 co-relation queries the response was YES. [2024-06-27 22:32:42,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10373 conditions, 1967 events. 1063/1967 cut-off events. For 19405/19405 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11697 event pairs, 229 based on Foata normal form. 1/1906 useless extension candidates. Maximal degree in co-relation 10301. Up to 1659 conditions per place. [2024-06-27 22:32:42,831 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 178 selfloop transitions, 22 changer transitions 0/207 dead transitions. [2024-06-27 22:32:42,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 207 transitions, 2726 flow [2024-06-27 22:32:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-27 22:32:42,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:32:42,832 INFO L175 Difference]: Start difference. First operand has 140 places, 187 transitions, 2248 flow. Second operand 8 states and 128 transitions. [2024-06-27 22:32:42,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 207 transitions, 2726 flow [2024-06-27 22:32:42,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 207 transitions, 2654 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:42,906 INFO L231 Difference]: Finished difference. Result has 144 places, 187 transitions, 2229 flow [2024-06-27 22:32:42,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2176, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2229, PETRI_PLACES=144, PETRI_TRANSITIONS=187} [2024-06-27 22:32:42,906 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-27 22:32:42,907 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 187 transitions, 2229 flow [2024-06-27 22:32:42,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:42,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:42,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:42,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:32:42,907 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:42,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:42,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1806955065, now seen corresponding path program 3 times [2024-06-27 22:32:42,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:42,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536671642] [2024-06-27 22:32:42,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:42,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:44,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:44,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536671642] [2024-06-27 22:32:44,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536671642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:44,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:44,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:44,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495974459] [2024-06-27 22:32:44,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:44,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:44,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:44,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:44,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:44,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:32:44,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 187 transitions, 2229 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 22:32:44,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:44,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:32:44,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:44,927 INFO L124 PetriNetUnfolderBase]: 927/1781 cut-off events. [2024-06-27 22:32:44,927 INFO L125 PetriNetUnfolderBase]: For 19271/19275 co-relation queries the response was YES. [2024-06-27 22:32:44,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9336 conditions, 1781 events. 927/1781 cut-off events. For 19271/19275 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10925 event pairs, 152 based on Foata normal form. 1/1716 useless extension candidates. Maximal degree in co-relation 9263. Up to 1145 conditions per place. [2024-06-27 22:32:44,940 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 125 selfloop transitions, 54 changer transitions 0/213 dead transitions. [2024-06-27 22:32:44,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 213 transitions, 2745 flow [2024-06-27 22:32:44,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-27 22:32:44,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328185328185329 [2024-06-27 22:32:44,942 INFO L175 Difference]: Start difference. First operand has 144 places, 187 transitions, 2229 flow. Second operand 7 states and 138 transitions. [2024-06-27 22:32:44,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 213 transitions, 2745 flow [2024-06-27 22:32:44,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 213 transitions, 2673 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 22:32:44,985 INFO L231 Difference]: Finished difference. Result has 144 places, 191 transitions, 2305 flow [2024-06-27 22:32:44,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2157, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2305, PETRI_PLACES=144, PETRI_TRANSITIONS=191} [2024-06-27 22:32:44,986 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-27 22:32:44,986 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 191 transitions, 2305 flow [2024-06-27 22:32:44,987 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 22:32:44,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:44,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:44,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:32:44,987 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:44,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:44,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1841208825, now seen corresponding path program 4 times [2024-06-27 22:32:44,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:44,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323929268] [2024-06-27 22:32:44,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:44,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:46,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:46,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323929268] [2024-06-27 22:32:46,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323929268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:46,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:46,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:46,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194577373] [2024-06-27 22:32:46,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:46,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:46,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:46,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:46,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:46,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:32:46,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 191 transitions, 2305 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 22:32:46,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:46,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:32:46,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:46,822 INFO L124 PetriNetUnfolderBase]: 927/1798 cut-off events. [2024-06-27 22:32:46,823 INFO L125 PetriNetUnfolderBase]: For 20248/20252 co-relation queries the response was YES. [2024-06-27 22:32:46,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9579 conditions, 1798 events. 927/1798 cut-off events. For 20248/20252 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11117 event pairs, 160 based on Foata normal form. 1/1726 useless extension candidates. Maximal degree in co-relation 9505. Up to 1219 conditions per place. [2024-06-27 22:32:46,836 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 112 selfloop transitions, 62 changer transitions 0/208 dead transitions. [2024-06-27 22:32:46,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 208 transitions, 2705 flow [2024-06-27 22:32:46,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:46,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 22:32:46,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-06-27 22:32:46,837 INFO L175 Difference]: Start difference. First operand has 144 places, 191 transitions, 2305 flow. Second operand 7 states and 134 transitions. [2024-06-27 22:32:46,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 208 transitions, 2705 flow [2024-06-27 22:32:46,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 208 transitions, 2642 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:46,876 INFO L231 Difference]: Finished difference. Result has 147 places, 191 transitions, 2379 flow [2024-06-27 22:32:46,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2379, PETRI_PLACES=147, PETRI_TRANSITIONS=191} [2024-06-27 22:32:46,877 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-06-27 22:32:46,877 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 191 transitions, 2379 flow [2024-06-27 22:32:46,877 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 22:32:46,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:46,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:46,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:32:46,878 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:46,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:46,878 INFO L85 PathProgramCache]: Analyzing trace with hash 292269230, now seen corresponding path program 4 times [2024-06-27 22:32:46,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:46,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122783435] [2024-06-27 22:32:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:46,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:48,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:48,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122783435] [2024-06-27 22:32:48,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122783435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:48,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:48,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:48,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078729765] [2024-06-27 22:32:48,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:48,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:48,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:48,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:48,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:48,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:48,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 191 transitions, 2379 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:48,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:48,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:48,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:48,844 INFO L124 PetriNetUnfolderBase]: 1109/2040 cut-off events. [2024-06-27 22:32:48,844 INFO L125 PetriNetUnfolderBase]: For 21378/21378 co-relation queries the response was YES. [2024-06-27 22:32:48,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11166 conditions, 2040 events. 1109/2040 cut-off events. For 21378/21378 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12133 event pairs, 192 based on Foata normal form. 1/1978 useless extension candidates. Maximal degree in co-relation 11091. Up to 1515 conditions per place. [2024-06-27 22:32:48,859 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 149 selfloop transitions, 86 changer transitions 0/242 dead transitions. [2024-06-27 22:32:48,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 242 transitions, 3373 flow [2024-06-27 22:32:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:48,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:48,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:32:48,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 22:32:48,860 INFO L175 Difference]: Start difference. First operand has 147 places, 191 transitions, 2379 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:32:48,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 242 transitions, 3373 flow [2024-06-27 22:32:48,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 242 transitions, 3239 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 22:32:48,904 INFO L231 Difference]: Finished difference. Result has 151 places, 215 transitions, 2843 flow [2024-06-27 22:32:48,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2843, PETRI_PLACES=151, PETRI_TRANSITIONS=215} [2024-06-27 22:32:48,904 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-06-27 22:32:48,904 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 215 transitions, 2843 flow [2024-06-27 22:32:48,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:48,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:48,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:48,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:32:48,905 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:48,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:48,906 INFO L85 PathProgramCache]: Analyzing trace with hash 291323420, now seen corresponding path program 5 times [2024-06-27 22:32:48,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:48,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360039691] [2024-06-27 22:32:48,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:48,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:50,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:50,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360039691] [2024-06-27 22:32:50,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360039691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:50,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:50,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:50,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776661447] [2024-06-27 22:32:50,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:50,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:50,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:50,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:50,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:50,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:50,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 215 transitions, 2843 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:50,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:50,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:50,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:50,788 INFO L124 PetriNetUnfolderBase]: 1127/2072 cut-off events. [2024-06-27 22:32:50,788 INFO L125 PetriNetUnfolderBase]: For 21829/21829 co-relation queries the response was YES. [2024-06-27 22:32:50,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11581 conditions, 2072 events. 1127/2072 cut-off events. For 21829/21829 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12352 event pairs, 205 based on Foata normal form. 1/2010 useless extension candidates. Maximal degree in co-relation 11504. Up to 1534 conditions per place. [2024-06-27 22:32:50,803 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 153 selfloop transitions, 91 changer transitions 0/251 dead transitions. [2024-06-27 22:32:50,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 251 transitions, 3619 flow [2024-06-27 22:32:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 22:32:50,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-27 22:32:50,805 INFO L175 Difference]: Start difference. First operand has 151 places, 215 transitions, 2843 flow. Second operand 8 states and 143 transitions. [2024-06-27 22:32:50,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 251 transitions, 3619 flow [2024-06-27 22:32:50,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 251 transitions, 3505 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:50,849 INFO L231 Difference]: Finished difference. Result has 156 places, 226 transitions, 3088 flow [2024-06-27 22:32:50,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2738, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3088, PETRI_PLACES=156, PETRI_TRANSITIONS=226} [2024-06-27 22:32:50,850 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-06-27 22:32:50,850 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 226 transitions, 3088 flow [2024-06-27 22:32:50,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:50,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:50,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:50,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:32:50,851 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:50,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash 291323637, now seen corresponding path program 5 times [2024-06-27 22:32:50,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:50,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847142150] [2024-06-27 22:32:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:50,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:52,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:52,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847142150] [2024-06-27 22:32:52,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847142150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:52,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:52,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:52,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643711616] [2024-06-27 22:32:52,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:52,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:52,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:52,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:52,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:52,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:52,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 226 transitions, 3088 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:52,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:52,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:52,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:53,213 INFO L124 PetriNetUnfolderBase]: 1165/2131 cut-off events. [2024-06-27 22:32:53,213 INFO L125 PetriNetUnfolderBase]: For 23526/23526 co-relation queries the response was YES. [2024-06-27 22:32:53,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11963 conditions, 2131 events. 1165/2131 cut-off events. For 23526/23526 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12692 event pairs, 191 based on Foata normal form. 2/2070 useless extension candidates. Maximal degree in co-relation 11884. Up to 1435 conditions per place. [2024-06-27 22:32:53,227 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 184 selfloop transitions, 89 changer transitions 0/280 dead transitions. [2024-06-27 22:32:53,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 280 transitions, 4103 flow [2024-06-27 22:32:53,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:53,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:53,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:32:53,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-27 22:32:53,229 INFO L175 Difference]: Start difference. First operand has 156 places, 226 transitions, 3088 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:32:53,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 280 transitions, 4103 flow [2024-06-27 22:32:53,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 280 transitions, 3991 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:53,280 INFO L231 Difference]: Finished difference. Result has 162 places, 242 transitions, 3353 flow [2024-06-27 22:32:53,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2976, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3353, PETRI_PLACES=162, PETRI_TRANSITIONS=242} [2024-06-27 22:32:53,281 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-06-27 22:32:53,281 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 242 transitions, 3353 flow [2024-06-27 22:32:53,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:53,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:53,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:53,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:32:53,281 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:53,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:53,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2121681546, now seen corresponding path program 1 times [2024-06-27 22:32:53,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:53,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791446373] [2024-06-27 22:32:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:53,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:54,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:54,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791446373] [2024-06-27 22:32:54,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791446373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:54,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:54,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:54,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879425949] [2024-06-27 22:32:54,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:54,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:54,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:54,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:54,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:54,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:32:54,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 242 transitions, 3353 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:54,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:54,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:32:54,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:55,356 INFO L124 PetriNetUnfolderBase]: 1165/2193 cut-off events. [2024-06-27 22:32:55,356 INFO L125 PetriNetUnfolderBase]: For 27846/27846 co-relation queries the response was YES. [2024-06-27 22:32:55,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12647 conditions, 2193 events. 1165/2193 cut-off events. For 27846/27846 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13595 event pairs, 203 based on Foata normal form. 2/2122 useless extension candidates. Maximal degree in co-relation 12566. Up to 1528 conditions per place. [2024-06-27 22:32:55,373 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 194 selfloop transitions, 45 changer transitions 0/278 dead transitions. [2024-06-27 22:32:55,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 278 transitions, 4085 flow [2024-06-27 22:32:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-27 22:32:55,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:32:55,374 INFO L175 Difference]: Start difference. First operand has 162 places, 242 transitions, 3353 flow. Second operand 8 states and 152 transitions. [2024-06-27 22:32:55,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 278 transitions, 4085 flow [2024-06-27 22:32:55,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 278 transitions, 3988 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:55,434 INFO L231 Difference]: Finished difference. Result has 168 places, 246 transitions, 3394 flow [2024-06-27 22:32:55,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3394, PETRI_PLACES=168, PETRI_TRANSITIONS=246} [2024-06-27 22:32:55,434 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-06-27 22:32:55,434 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 246 transitions, 3394 flow [2024-06-27 22:32:55,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:55,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:55,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:55,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:32:55,435 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:55,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:55,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1029361582, now seen corresponding path program 1 times [2024-06-27 22:32:55,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:55,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792421991] [2024-06-27 22:32:55,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:55,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:56,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:56,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792421991] [2024-06-27 22:32:56,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792421991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:56,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:56,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:32:56,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094792448] [2024-06-27 22:32:56,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:56,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:32:56,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:32:56,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:32:56,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:32:56,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 246 transitions, 3394 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:56,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:56,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:32:56,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:57,518 INFO L124 PetriNetUnfolderBase]: 1281/2376 cut-off events. [2024-06-27 22:32:57,518 INFO L125 PetriNetUnfolderBase]: For 28777/28777 co-relation queries the response was YES. [2024-06-27 22:32:57,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13485 conditions, 2376 events. 1281/2376 cut-off events. For 28777/28777 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 14868 event pairs, 249 based on Foata normal form. 1/2299 useless extension candidates. Maximal degree in co-relation 13400. Up to 1644 conditions per place. [2024-06-27 22:32:57,537 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 208 selfloop transitions, 78 changer transitions 0/293 dead transitions. [2024-06-27 22:32:57,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 293 transitions, 4334 flow [2024-06-27 22:32:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:57,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:32:57,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 22:32:57,538 INFO L175 Difference]: Start difference. First operand has 168 places, 246 transitions, 3394 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:32:57,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 293 transitions, 4334 flow [2024-06-27 22:32:57,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 293 transitions, 4263 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:57,602 INFO L231 Difference]: Finished difference. Result has 175 places, 260 transitions, 3675 flow [2024-06-27 22:32:57,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3329, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3675, PETRI_PLACES=175, PETRI_TRANSITIONS=260} [2024-06-27 22:32:57,602 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-06-27 22:32:57,602 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 260 transitions, 3675 flow [2024-06-27 22:32:57,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:57,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:57,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:57,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:32:57,603 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:57,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:57,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1029361458, now seen corresponding path program 2 times [2024-06-27 22:32:57,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:57,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246103195] [2024-06-27 22:32:57,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:57,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:59,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:59,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246103195] [2024-06-27 22:32:59,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246103195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:59,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:59,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:59,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577182501] [2024-06-27 22:32:59,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:59,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:59,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:59,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:59,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:59,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:32:59,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 260 transitions, 3675 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:59,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:59,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:32:59,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:59,684 INFO L124 PetriNetUnfolderBase]: 1236/2328 cut-off events. [2024-06-27 22:32:59,684 INFO L125 PetriNetUnfolderBase]: For 31326/31326 co-relation queries the response was YES. [2024-06-27 22:32:59,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13608 conditions, 2328 events. 1236/2328 cut-off events. For 31326/31326 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14717 event pairs, 240 based on Foata normal form. 2/2258 useless extension candidates. Maximal degree in co-relation 13519. Up to 1745 conditions per place. [2024-06-27 22:32:59,704 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 212 selfloop transitions, 37 changer transitions 0/290 dead transitions. [2024-06-27 22:32:59,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 290 transitions, 4356 flow [2024-06-27 22:32:59,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:59,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 22:32:59,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 22:32:59,705 INFO L175 Difference]: Start difference. First operand has 175 places, 260 transitions, 3675 flow. Second operand 8 states and 147 transitions. [2024-06-27 22:32:59,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 290 transitions, 4356 flow [2024-06-27 22:32:59,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 290 transitions, 4277 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:59,774 INFO L231 Difference]: Finished difference. Result has 180 places, 263 transitions, 3718 flow [2024-06-27 22:32:59,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3596, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3718, PETRI_PLACES=180, PETRI_TRANSITIONS=263} [2024-06-27 22:32:59,774 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 139 predicate places. [2024-06-27 22:32:59,774 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 263 transitions, 3718 flow [2024-06-27 22:32:59,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:59,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:59,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:59,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:32:59,775 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:59,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:59,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2118819812, now seen corresponding path program 2 times [2024-06-27 22:32:59,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:59,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941967668] [2024-06-27 22:32:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:59,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:01,312 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 22:33:01,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:01,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941967668] [2024-06-27 22:33:01,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941967668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:01,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:01,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:01,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466583185] [2024-06-27 22:33:01,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:01,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:01,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:01,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:01,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:01,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:01,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 263 transitions, 3718 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:01,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:01,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:01,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:02,029 INFO L124 PetriNetUnfolderBase]: 1305/2465 cut-off events. [2024-06-27 22:33:02,029 INFO L125 PetriNetUnfolderBase]: For 32510/32510 co-relation queries the response was YES. [2024-06-27 22:33:02,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14300 conditions, 2465 events. 1305/2465 cut-off events. For 32510/32510 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15688 event pairs, 278 based on Foata normal form. 1/2380 useless extension candidates. Maximal degree in co-relation 14208. Up to 1893 conditions per place. [2024-06-27 22:33:02,049 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 201 selfloop transitions, 86 changer transitions 0/294 dead transitions. [2024-06-27 22:33:02,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 294 transitions, 4536 flow [2024-06-27 22:33:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:02,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 22:33:02,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 22:33:02,050 INFO L175 Difference]: Start difference. First operand has 180 places, 263 transitions, 3718 flow. Second operand 9 states and 148 transitions. [2024-06-27 22:33:02,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 294 transitions, 4536 flow [2024-06-27 22:33:02,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 294 transitions, 4498 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:02,121 INFO L231 Difference]: Finished difference. Result has 188 places, 273 transitions, 4059 flow [2024-06-27 22:33:02,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4059, PETRI_PLACES=188, PETRI_TRANSITIONS=273} [2024-06-27 22:33:02,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-27 22:33:02,122 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 273 transitions, 4059 flow [2024-06-27 22:33:02,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:02,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:02,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:02,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:33:02,123 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:02,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:02,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2118824462, now seen corresponding path program 3 times [2024-06-27 22:33:02,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:02,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496323672] [2024-06-27 22:33:02,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:02,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:03,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:03,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:03,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496323672] [2024-06-27 22:33:03,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496323672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:03,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:03,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:03,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455583744] [2024-06-27 22:33:03,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:03,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:03,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:03,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:03,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:03,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:03,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 273 transitions, 4059 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:03,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:03,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:03,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:04,232 INFO L124 PetriNetUnfolderBase]: 1319/2487 cut-off events. [2024-06-27 22:33:04,232 INFO L125 PetriNetUnfolderBase]: For 35569/35569 co-relation queries the response was YES. [2024-06-27 22:33:04,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14877 conditions, 2487 events. 1319/2487 cut-off events. For 35569/35569 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15813 event pairs, 279 based on Foata normal form. 1/2402 useless extension candidates. Maximal degree in co-relation 14782. Up to 1889 conditions per place. [2024-06-27 22:33:04,252 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 208 selfloop transitions, 88 changer transitions 0/303 dead transitions. [2024-06-27 22:33:04,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 303 transitions, 4878 flow [2024-06-27 22:33:04,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:04,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 22:33:04,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-27 22:33:04,253 INFO L175 Difference]: Start difference. First operand has 188 places, 273 transitions, 4059 flow. Second operand 8 states and 142 transitions. [2024-06-27 22:33:04,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 303 transitions, 4878 flow [2024-06-27 22:33:04,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 303 transitions, 4775 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:04,331 INFO L231 Difference]: Finished difference. Result has 192 places, 277 transitions, 4185 flow [2024-06-27 22:33:04,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3956, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4185, PETRI_PLACES=192, PETRI_TRANSITIONS=277} [2024-06-27 22:33:04,331 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 151 predicate places. [2024-06-27 22:33:04,331 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 277 transitions, 4185 flow [2024-06-27 22:33:04,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:04,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:04,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:04,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:33:04,332 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:04,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:04,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2118824586, now seen corresponding path program 3 times [2024-06-27 22:33:04,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:04,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586592407] [2024-06-27 22:33:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:04,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:06,128 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 22:33:06,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:06,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586592407] [2024-06-27 22:33:06,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586592407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:06,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:06,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:06,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872019283] [2024-06-27 22:33:06,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:06,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:06,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:06,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:06,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:06,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:06,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 277 transitions, 4185 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:06,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:06,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:06,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:06,910 INFO L124 PetriNetUnfolderBase]: 1261/2437 cut-off events. [2024-06-27 22:33:06,911 INFO L125 PetriNetUnfolderBase]: For 37316/37316 co-relation queries the response was YES. [2024-06-27 22:33:06,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14565 conditions, 2437 events. 1261/2437 cut-off events. For 37316/37316 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15812 event pairs, 259 based on Foata normal form. 2/2353 useless extension candidates. Maximal degree in co-relation 14469. Up to 1779 conditions per place. [2024-06-27 22:33:06,945 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 215 selfloop transitions, 45 changer transitions 0/304 dead transitions. [2024-06-27 22:33:06,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 304 transitions, 4844 flow [2024-06-27 22:33:06,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 22:33:06,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 22:33:06,947 INFO L175 Difference]: Start difference. First operand has 192 places, 277 transitions, 4185 flow. Second operand 8 states and 147 transitions. [2024-06-27 22:33:06,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 304 transitions, 4844 flow [2024-06-27 22:33:07,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 304 transitions, 4791 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:07,070 INFO L231 Difference]: Finished difference. Result has 198 places, 280 transitions, 4268 flow [2024-06-27 22:33:07,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4132, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4268, PETRI_PLACES=198, PETRI_TRANSITIONS=280} [2024-06-27 22:33:07,071 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-27 22:33:07,071 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 280 transitions, 4268 flow [2024-06-27 22:33:07,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:07,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:07,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:07,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:33:07,072 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:07,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:07,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1147449262, now seen corresponding path program 4 times [2024-06-27 22:33:07,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:07,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36098397] [2024-06-27 22:33:07,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:07,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:08,619 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 22:33:08,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:08,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36098397] [2024-06-27 22:33:08,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36098397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:08,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:08,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:08,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427056205] [2024-06-27 22:33:08,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:08,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:08,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:08,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:08,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:08,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:08,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 280 transitions, 4268 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:08,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:08,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:08,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:09,367 INFO L124 PetriNetUnfolderBase]: 1332/2536 cut-off events. [2024-06-27 22:33:09,367 INFO L125 PetriNetUnfolderBase]: For 38331/38331 co-relation queries the response was YES. [2024-06-27 22:33:09,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15290 conditions, 2536 events. 1332/2536 cut-off events. For 38331/38331 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 16180 event pairs, 282 based on Foata normal form. 1/2444 useless extension candidates. Maximal degree in co-relation 15191. Up to 1888 conditions per place. [2024-06-27 22:33:09,389 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 211 selfloop transitions, 101 changer transitions 0/319 dead transitions. [2024-06-27 22:33:09,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 319 transitions, 5332 flow [2024-06-27 22:33:09,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:09,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 22:33:09,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:33:09,391 INFO L175 Difference]: Start difference. First operand has 198 places, 280 transitions, 4268 flow. Second operand 9 states and 153 transitions. [2024-06-27 22:33:09,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 319 transitions, 5332 flow [2024-06-27 22:33:09,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 319 transitions, 5244 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:09,482 INFO L231 Difference]: Finished difference. Result has 204 places, 298 transitions, 4766 flow [2024-06-27 22:33:09,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4180, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4766, PETRI_PLACES=204, PETRI_TRANSITIONS=298} [2024-06-27 22:33:09,482 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 163 predicate places. [2024-06-27 22:33:09,482 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 298 transitions, 4766 flow [2024-06-27 22:33:09,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:09,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:09,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:09,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:33:09,483 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:09,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:09,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1147454098, now seen corresponding path program 1 times [2024-06-27 22:33:09,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:09,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092715004] [2024-06-27 22:33:09,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:09,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:10,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:10,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092715004] [2024-06-27 22:33:10,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092715004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:10,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:10,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:10,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224328729] [2024-06-27 22:33:10,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:10,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:10,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:10,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:10,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:10,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 298 transitions, 4766 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:10,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:10,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:10,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:11,388 INFO L124 PetriNetUnfolderBase]: 1369/2617 cut-off events. [2024-06-27 22:33:11,388 INFO L125 PetriNetUnfolderBase]: For 42644/42644 co-relation queries the response was YES. [2024-06-27 22:33:11,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16004 conditions, 2617 events. 1369/2617 cut-off events. For 42644/42644 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 16912 event pairs, 283 based on Foata normal form. 3/2520 useless extension candidates. Maximal degree in co-relation 15902. Up to 1532 conditions per place. [2024-06-27 22:33:11,413 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 250 selfloop transitions, 96 changer transitions 0/353 dead transitions. [2024-06-27 22:33:11,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 353 transitions, 5901 flow [2024-06-27 22:33:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 22:33:11,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-06-27 22:33:11,414 INFO L175 Difference]: Start difference. First operand has 204 places, 298 transitions, 4766 flow. Second operand 8 states and 154 transitions. [2024-06-27 22:33:11,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 353 transitions, 5901 flow [2024-06-27 22:33:11,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 353 transitions, 5832 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:11,527 INFO L231 Difference]: Finished difference. Result has 209 places, 302 transitions, 4945 flow [2024-06-27 22:33:11,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4697, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4945, PETRI_PLACES=209, PETRI_TRANSITIONS=302} [2024-06-27 22:33:11,528 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-06-27 22:33:11,528 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 302 transitions, 4945 flow [2024-06-27 22:33:11,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:11,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:11,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:11,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:33:11,528 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:11,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:11,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1147453912, now seen corresponding path program 5 times [2024-06-27 22:33:11,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:11,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649011989] [2024-06-27 22:33:11,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:11,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:13,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:13,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649011989] [2024-06-27 22:33:13,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649011989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:13,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:13,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:13,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572761982] [2024-06-27 22:33:13,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:13,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:13,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:13,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:13,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:13,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:13,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 302 transitions, 4945 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:13,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:13,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:13,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:13,773 INFO L124 PetriNetUnfolderBase]: 1380/2626 cut-off events. [2024-06-27 22:33:13,774 INFO L125 PetriNetUnfolderBase]: For 43840/43840 co-relation queries the response was YES. [2024-06-27 22:33:13,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16481 conditions, 2626 events. 1380/2626 cut-off events. For 43840/43840 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 16917 event pairs, 297 based on Foata normal form. 1/2530 useless extension candidates. Maximal degree in co-relation 16377. Up to 2010 conditions per place. [2024-06-27 22:33:13,796 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 221 selfloop transitions, 101 changer transitions 0/329 dead transitions. [2024-06-27 22:33:13,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 329 transitions, 5774 flow [2024-06-27 22:33:13,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:13,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 22:33:13,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-27 22:33:13,797 INFO L175 Difference]: Start difference. First operand has 209 places, 302 transitions, 4945 flow. Second operand 8 states and 141 transitions. [2024-06-27 22:33:13,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 329 transitions, 5774 flow [2024-06-27 22:33:13,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 329 transitions, 5588 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:13,912 INFO L231 Difference]: Finished difference. Result has 212 places, 308 transitions, 5068 flow [2024-06-27 22:33:13,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4759, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5068, PETRI_PLACES=212, PETRI_TRANSITIONS=308} [2024-06-27 22:33:13,913 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-27 22:33:13,913 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 308 transitions, 5068 flow [2024-06-27 22:33:13,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:13,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:13,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:13,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:33:13,914 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:13,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:13,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1147633588, now seen corresponding path program 2 times [2024-06-27 22:33:13,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:13,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299075893] [2024-06-27 22:33:13,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:13,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:15,032 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 22:33:15,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:15,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299075893] [2024-06-27 22:33:15,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299075893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:15,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:15,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:15,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133214976] [2024-06-27 22:33:15,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:15,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:15,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:15,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:15,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:15,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:15,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 308 transitions, 5068 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:15,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:15,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:15,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:15,773 INFO L124 PetriNetUnfolderBase]: 1460/2774 cut-off events. [2024-06-27 22:33:15,773 INFO L125 PetriNetUnfolderBase]: For 48139/48139 co-relation queries the response was YES. [2024-06-27 22:33:15,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17203 conditions, 2774 events. 1460/2774 cut-off events. For 48139/48139 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 18055 event pairs, 298 based on Foata normal form. 3/2673 useless extension candidates. Maximal degree in co-relation 17098. Up to 1605 conditions per place. [2024-06-27 22:33:15,801 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 264 selfloop transitions, 97 changer transitions 0/368 dead transitions. [2024-06-27 22:33:15,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 368 transitions, 6382 flow [2024-06-27 22:33:15,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:15,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 22:33:15,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168918918918919 [2024-06-27 22:33:15,803 INFO L175 Difference]: Start difference. First operand has 212 places, 308 transitions, 5068 flow. Second operand 8 states and 153 transitions. [2024-06-27 22:33:15,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 368 transitions, 6382 flow [2024-06-27 22:33:15,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 368 transitions, 6148 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:15,930 INFO L231 Difference]: Finished difference. Result has 214 places, 316 transitions, 5133 flow [2024-06-27 22:33:15,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4844, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5133, PETRI_PLACES=214, PETRI_TRANSITIONS=316} [2024-06-27 22:33:15,930 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-27 22:33:15,930 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 316 transitions, 5133 flow [2024-06-27 22:33:15,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:15,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:15,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:15,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:33:15,931 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:15,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:15,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1147626892, now seen corresponding path program 6 times [2024-06-27 22:33:15,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:15,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081923773] [2024-06-27 22:33:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:15,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:17,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:17,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081923773] [2024-06-27 22:33:17,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081923773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:17,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:17,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:17,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509097457] [2024-06-27 22:33:17,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:17,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:17,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:17,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:17,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:17,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:17,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 316 transitions, 5133 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:17,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:17,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:17,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:17,972 INFO L124 PetriNetUnfolderBase]: 1471/2794 cut-off events. [2024-06-27 22:33:17,973 INFO L125 PetriNetUnfolderBase]: For 48951/48951 co-relation queries the response was YES. [2024-06-27 22:33:17,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17530 conditions, 2794 events. 1471/2794 cut-off events. For 48951/48951 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 18194 event pairs, 302 based on Foata normal form. 1/2691 useless extension candidates. Maximal degree in co-relation 17424. Up to 2150 conditions per place. [2024-06-27 22:33:17,999 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 238 selfloop transitions, 99 changer transitions 0/344 dead transitions. [2024-06-27 22:33:17,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 344 transitions, 6033 flow [2024-06-27 22:33:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:18,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:18,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 22:33:18,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-27 22:33:18,002 INFO L175 Difference]: Start difference. First operand has 214 places, 316 transitions, 5133 flow. Second operand 8 states and 139 transitions. [2024-06-27 22:33:18,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 344 transitions, 6033 flow [2024-06-27 22:33:18,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 344 transitions, 5889 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:18,129 INFO L231 Difference]: Finished difference. Result has 218 places, 325 transitions, 5354 flow [2024-06-27 22:33:18,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4989, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5354, PETRI_PLACES=218, PETRI_TRANSITIONS=325} [2024-06-27 22:33:18,130 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-06-27 22:33:18,130 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 325 transitions, 5354 flow [2024-06-27 22:33:18,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:18,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:18,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:18,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:33:18,131 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:18,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:18,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1361813654, now seen corresponding path program 3 times [2024-06-27 22:33:18,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:18,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425123078] [2024-06-27 22:33:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:18,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:19,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:19,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425123078] [2024-06-27 22:33:19,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425123078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:19,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:19,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:19,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295160213] [2024-06-27 22:33:19,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:19,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:19,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:19,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:19,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:19,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:19,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 325 transitions, 5354 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:19,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:19,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:19,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:19,961 INFO L124 PetriNetUnfolderBase]: 1465/2786 cut-off events. [2024-06-27 22:33:19,962 INFO L125 PetriNetUnfolderBase]: For 50195/50195 co-relation queries the response was YES. [2024-06-27 22:33:19,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17315 conditions, 2786 events. 1465/2786 cut-off events. For 50195/50195 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 18173 event pairs, 295 based on Foata normal form. 3/2684 useless extension candidates. Maximal degree in co-relation 17208. Up to 1618 conditions per place. [2024-06-27 22:33:19,986 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 282 selfloop transitions, 92 changer transitions 0/381 dead transitions. [2024-06-27 22:33:19,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 381 transitions, 6529 flow [2024-06-27 22:33:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:19,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:33:19,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236486486486487 [2024-06-27 22:33:19,991 INFO L175 Difference]: Start difference. First operand has 218 places, 325 transitions, 5354 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:33:19,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 381 transitions, 6529 flow [2024-06-27 22:33:20,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 381 transitions, 6403 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:20,131 INFO L231 Difference]: Finished difference. Result has 223 places, 325 transitions, 5423 flow [2024-06-27 22:33:20,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5228, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5423, PETRI_PLACES=223, PETRI_TRANSITIONS=325} [2024-06-27 22:33:20,132 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 182 predicate places. [2024-06-27 22:33:20,132 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 325 transitions, 5423 flow [2024-06-27 22:33:20,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:20,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:20,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:20,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:33:20,137 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:20,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:20,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1682758988, now seen corresponding path program 4 times [2024-06-27 22:33:20,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:20,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031297255] [2024-06-27 22:33:20,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:20,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:21,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:21,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031297255] [2024-06-27 22:33:21,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031297255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:21,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:21,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:21,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705155165] [2024-06-27 22:33:21,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:21,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:21,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:21,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:21,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:21,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:21,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 325 transitions, 5423 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:21,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:21,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:21,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:22,059 INFO L124 PetriNetUnfolderBase]: 1571/2965 cut-off events. [2024-06-27 22:33:22,059 INFO L125 PetriNetUnfolderBase]: For 58419/58419 co-relation queries the response was YES. [2024-06-27 22:33:22,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18610 conditions, 2965 events. 1571/2965 cut-off events. For 58419/58419 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 19470 event pairs, 347 based on Foata normal form. 3/2861 useless extension candidates. Maximal degree in co-relation 18502. Up to 2169 conditions per place. [2024-06-27 22:33:22,091 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 330 selfloop transitions, 45 changer transitions 0/382 dead transitions. [2024-06-27 22:33:22,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 382 transitions, 6739 flow [2024-06-27 22:33:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:22,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:33:22,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:33:22,092 INFO L175 Difference]: Start difference. First operand has 223 places, 325 transitions, 5423 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:33:22,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 382 transitions, 6739 flow [2024-06-27 22:33:22,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 382 transitions, 6512 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:22,248 INFO L231 Difference]: Finished difference. Result has 225 places, 335 transitions, 5449 flow [2024-06-27 22:33:22,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5212, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5449, PETRI_PLACES=225, PETRI_TRANSITIONS=335} [2024-06-27 22:33:22,249 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-27 22:33:22,249 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 335 transitions, 5449 flow [2024-06-27 22:33:22,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:22,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:22,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:22,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:33:22,249 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:22,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:22,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1682765498, now seen corresponding path program 5 times [2024-06-27 22:33:22,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:22,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034527948] [2024-06-27 22:33:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:22,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:23,539 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 22:33:23,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:23,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034527948] [2024-06-27 22:33:23,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034527948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:23,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:23,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:23,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502070574] [2024-06-27 22:33:23,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:23,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:23,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:23,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:23,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:23,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:23,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 335 transitions, 5449 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:23,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:23,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:23,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:24,308 INFO L124 PetriNetUnfolderBase]: 1565/2936 cut-off events. [2024-06-27 22:33:24,308 INFO L125 PetriNetUnfolderBase]: For 56378/56378 co-relation queries the response was YES. [2024-06-27 22:33:24,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18382 conditions, 2936 events. 1565/2936 cut-off events. For 56378/56378 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 19184 event pairs, 313 based on Foata normal form. 3/2837 useless extension candidates. Maximal degree in co-relation 18272. Up to 2165 conditions per place. [2024-06-27 22:33:24,338 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 328 selfloop transitions, 47 changer transitions 0/382 dead transitions. [2024-06-27 22:33:24,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 382 transitions, 6570 flow [2024-06-27 22:33:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:24,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:33:24,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 22:33:24,340 INFO L175 Difference]: Start difference. First operand has 225 places, 335 transitions, 5449 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:33:24,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 382 transitions, 6570 flow [2024-06-27 22:33:24,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 382 transitions, 6484 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:24,482 INFO L231 Difference]: Finished difference. Result has 229 places, 335 transitions, 5467 flow [2024-06-27 22:33:24,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5363, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5467, PETRI_PLACES=229, PETRI_TRANSITIONS=335} [2024-06-27 22:33:24,483 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 188 predicate places. [2024-06-27 22:33:24,483 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 335 transitions, 5467 flow [2024-06-27 22:33:24,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:24,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:24,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:24,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:33:24,484 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:24,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:24,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1673591048, now seen corresponding path program 6 times [2024-06-27 22:33:24,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:24,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910182774] [2024-06-27 22:33:24,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:24,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:25,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:25,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:25,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910182774] [2024-06-27 22:33:25,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910182774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:25,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:25,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:25,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343098564] [2024-06-27 22:33:25,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:25,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:25,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:25,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:25,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:25,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:25,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 335 transitions, 5467 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:25,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:25,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:25,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:26,375 INFO L124 PetriNetUnfolderBase]: 1555/2933 cut-off events. [2024-06-27 22:33:26,375 INFO L125 PetriNetUnfolderBase]: For 55426/55426 co-relation queries the response was YES. [2024-06-27 22:33:26,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18132 conditions, 2933 events. 1555/2933 cut-off events. For 55426/55426 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19271 event pairs, 333 based on Foata normal form. 5/2833 useless extension candidates. Maximal degree in co-relation 18021. Up to 2317 conditions per place. [2024-06-27 22:33:26,403 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 336 selfloop transitions, 27 changer transitions 0/370 dead transitions. [2024-06-27 22:33:26,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 370 transitions, 6387 flow [2024-06-27 22:33:26,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 22:33:26,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-27 22:33:26,405 INFO L175 Difference]: Start difference. First operand has 229 places, 335 transitions, 5467 flow. Second operand 8 states and 139 transitions. [2024-06-27 22:33:26,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 370 transitions, 6387 flow [2024-06-27 22:33:26,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 370 transitions, 6306 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:26,554 INFO L231 Difference]: Finished difference. Result has 231 places, 335 transitions, 5450 flow [2024-06-27 22:33:26,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5386, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5450, PETRI_PLACES=231, PETRI_TRANSITIONS=335} [2024-06-27 22:33:26,555 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-27 22:33:26,555 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 335 transitions, 5450 flow [2024-06-27 22:33:26,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:26,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:26,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:26,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:33:26,556 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:26,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:26,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1682765684, now seen corresponding path program 7 times [2024-06-27 22:33:26,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:26,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669526266] [2024-06-27 22:33:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:26,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:27,932 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 22:33:27,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:27,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669526266] [2024-06-27 22:33:27,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669526266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:27,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:27,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:27,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194747385] [2024-06-27 22:33:27,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:27,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:27,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:27,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:27,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:28,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:28,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 335 transitions, 5450 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:28,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:28,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:28,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:28,736 INFO L124 PetriNetUnfolderBase]: 1556/2961 cut-off events. [2024-06-27 22:33:28,736 INFO L125 PetriNetUnfolderBase]: For 52863/52863 co-relation queries the response was YES. [2024-06-27 22:33:28,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18148 conditions, 2961 events. 1556/2961 cut-off events. For 52863/52863 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 19546 event pairs, 359 based on Foata normal form. 1/2851 useless extension candidates. Maximal degree in co-relation 18036. Up to 2424 conditions per place. [2024-06-27 22:33:28,766 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 321 selfloop transitions, 30 changer transitions 0/358 dead transitions. [2024-06-27 22:33:28,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 358 transitions, 6273 flow [2024-06-27 22:33:28,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-27 22:33:28,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:33:28,767 INFO L175 Difference]: Start difference. First operand has 231 places, 335 transitions, 5450 flow. Second operand 9 states and 144 transitions. [2024-06-27 22:33:28,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 358 transitions, 6273 flow [2024-06-27 22:33:28,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 358 transitions, 6151 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:33:28,934 INFO L231 Difference]: Finished difference. Result has 232 places, 337 transitions, 5442 flow [2024-06-27 22:33:28,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5332, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5442, PETRI_PLACES=232, PETRI_TRANSITIONS=337} [2024-06-27 22:33:28,934 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-27 22:33:28,934 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 337 transitions, 5442 flow [2024-06-27 22:33:28,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:28,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:28,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:28,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:33:28,935 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:28,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:28,935 INFO L85 PathProgramCache]: Analyzing trace with hash 180972684, now seen corresponding path program 4 times [2024-06-27 22:33:28,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:28,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016924144] [2024-06-27 22:33:28,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:28,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:30,178 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 22:33:30,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:30,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016924144] [2024-06-27 22:33:30,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016924144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:30,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:30,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:30,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304045837] [2024-06-27 22:33:30,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:30,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:30,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:30,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:30,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:30,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:30,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 337 transitions, 5442 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:30,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:30,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:30,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:31,012 INFO L124 PetriNetUnfolderBase]: 1503/2846 cut-off events. [2024-06-27 22:33:31,012 INFO L125 PetriNetUnfolderBase]: For 54511/54512 co-relation queries the response was YES. [2024-06-27 22:33:31,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17653 conditions, 2846 events. 1503/2846 cut-off events. For 54511/54512 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18681 event pairs, 161 based on Foata normal form. 3/2753 useless extension candidates. Maximal degree in co-relation 17540. Up to 1700 conditions per place. [2024-06-27 22:33:31,040 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 243 selfloop transitions, 78 changer transitions 0/372 dead transitions. [2024-06-27 22:33:31,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 372 transitions, 6343 flow [2024-06-27 22:33:31,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:31,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-27 22:33:31,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482625482625483 [2024-06-27 22:33:31,041 INFO L175 Difference]: Start difference. First operand has 232 places, 337 transitions, 5442 flow. Second operand 7 states and 142 transitions. [2024-06-27 22:33:31,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 372 transitions, 6343 flow [2024-06-27 22:33:31,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 372 transitions, 6249 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:31,200 INFO L231 Difference]: Finished difference. Result has 232 places, 338 transitions, 5522 flow [2024-06-27 22:33:31,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5348, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5522, PETRI_PLACES=232, PETRI_TRANSITIONS=338} [2024-06-27 22:33:31,201 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-27 22:33:31,201 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 338 transitions, 5522 flow [2024-06-27 22:33:31,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:31,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:31,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:31,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:33:31,202 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:31,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:31,202 INFO L85 PathProgramCache]: Analyzing trace with hash 181033258, now seen corresponding path program 8 times [2024-06-27 22:33:31,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:31,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806516232] [2024-06-27 22:33:31,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:31,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:32,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:32,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:32,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806516232] [2024-06-27 22:33:32,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806516232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:32,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:32,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:32,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107198637] [2024-06-27 22:33:32,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:32,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:32,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:32,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:32,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:32,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:32,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 338 transitions, 5522 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:32,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:32,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:32,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:33,063 INFO L124 PetriNetUnfolderBase]: 1434/2788 cut-off events. [2024-06-27 22:33:33,063 INFO L125 PetriNetUnfolderBase]: For 55332/55334 co-relation queries the response was YES. [2024-06-27 22:33:33,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17233 conditions, 2788 events. 1434/2788 cut-off events. For 55332/55334 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 18799 event pairs, 265 based on Foata normal form. 1/2660 useless extension candidates. Maximal degree in co-relation 17120. Up to 1645 conditions per place. [2024-06-27 22:33:33,094 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 231 selfloop transitions, 129 changer transitions 0/371 dead transitions. [2024-06-27 22:33:33,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 371 transitions, 6532 flow [2024-06-27 22:33:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-27 22:33:33,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444015444015444 [2024-06-27 22:33:33,095 INFO L175 Difference]: Start difference. First operand has 232 places, 338 transitions, 5522 flow. Second operand 7 states and 141 transitions. [2024-06-27 22:33:33,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 371 transitions, 6532 flow [2024-06-27 22:33:33,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 371 transitions, 6384 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:33,290 INFO L231 Difference]: Finished difference. Result has 235 places, 344 transitions, 5786 flow [2024-06-27 22:33:33,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5376, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5786, PETRI_PLACES=235, PETRI_TRANSITIONS=344} [2024-06-27 22:33:33,290 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 194 predicate places. [2024-06-27 22:33:33,290 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 344 transitions, 5786 flow [2024-06-27 22:33:33,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:33,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:33,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:33,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:33:33,291 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:33,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:33,291 INFO L85 PathProgramCache]: Analyzing trace with hash 181033134, now seen corresponding path program 5 times [2024-06-27 22:33:33,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:33,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757315458] [2024-06-27 22:33:33,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:33,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:34,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:34,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757315458] [2024-06-27 22:33:34,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757315458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:34,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:34,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:34,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109757062] [2024-06-27 22:33:34,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:34,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:34,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:34,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:34,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:34,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:34,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 344 transitions, 5786 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:34,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:34,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:34,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:35,417 INFO L124 PetriNetUnfolderBase]: 1535/2946 cut-off events. [2024-06-27 22:33:35,417 INFO L125 PetriNetUnfolderBase]: For 58385/58386 co-relation queries the response was YES. [2024-06-27 22:33:35,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18619 conditions, 2946 events. 1535/2946 cut-off events. For 58385/58386 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 19649 event pairs, 236 based on Foata normal form. 3/2844 useless extension candidates. Maximal degree in co-relation 18505. Up to 1956 conditions per place. [2024-06-27 22:33:35,451 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 249 selfloop transitions, 75 changer transitions 0/378 dead transitions. [2024-06-27 22:33:35,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 378 transitions, 6612 flow [2024-06-27 22:33:35,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-27 22:33:35,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482625482625483 [2024-06-27 22:33:35,452 INFO L175 Difference]: Start difference. First operand has 235 places, 344 transitions, 5786 flow. Second operand 7 states and 142 transitions. [2024-06-27 22:33:35,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 378 transitions, 6612 flow [2024-06-27 22:33:35,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 378 transitions, 6565 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:35,667 INFO L231 Difference]: Finished difference. Result has 239 places, 346 transitions, 5923 flow [2024-06-27 22:33:35,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5739, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5923, PETRI_PLACES=239, PETRI_TRANSITIONS=346} [2024-06-27 22:33:35,667 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-27 22:33:35,667 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 346 transitions, 5923 flow [2024-06-27 22:33:35,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:35,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:35,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:35,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:33:35,668 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:35,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:35,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1242904468, now seen corresponding path program 9 times [2024-06-27 22:33:35,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:35,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145061783] [2024-06-27 22:33:35,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:35,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:36,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:36,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145061783] [2024-06-27 22:33:36,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145061783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:36,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:36,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:36,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638585497] [2024-06-27 22:33:36,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:36,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:36,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:36,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:36,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:36,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 346 transitions, 5923 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:36,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:36,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:36,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:37,623 INFO L124 PetriNetUnfolderBase]: 1472/2902 cut-off events. [2024-06-27 22:33:37,623 INFO L125 PetriNetUnfolderBase]: For 59057/59059 co-relation queries the response was YES. [2024-06-27 22:33:37,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18221 conditions, 2902 events. 1472/2902 cut-off events. For 59057/59059 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 20126 event pairs, 294 based on Foata normal form. 1/2759 useless extension candidates. Maximal degree in co-relation 18106. Up to 1976 conditions per place. [2024-06-27 22:33:37,656 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 246 selfloop transitions, 117 changer transitions 0/374 dead transitions. [2024-06-27 22:33:37,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 374 transitions, 6851 flow [2024-06-27 22:33:37,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:33:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:33:37,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-27 22:33:37,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525096525096525 [2024-06-27 22:33:37,657 INFO L175 Difference]: Start difference. First operand has 239 places, 346 transitions, 5923 flow. Second operand 7 states and 136 transitions. [2024-06-27 22:33:37,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 374 transitions, 6851 flow [2024-06-27 22:33:37,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 374 transitions, 6696 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:37,853 INFO L231 Difference]: Finished difference. Result has 242 places, 355 transitions, 6200 flow [2024-06-27 22:33:37,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5768, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6200, PETRI_PLACES=242, PETRI_TRANSITIONS=355} [2024-06-27 22:33:37,854 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 201 predicate places. [2024-06-27 22:33:37,854 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 355 transitions, 6200 flow [2024-06-27 22:33:37,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:37,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:37,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:37,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:33:37,855 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:37,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:37,855 INFO L85 PathProgramCache]: Analyzing trace with hash 183829768, now seen corresponding path program 10 times [2024-06-27 22:33:37,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:37,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53535436] [2024-06-27 22:33:37,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:37,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:39,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:39,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53535436] [2024-06-27 22:33:39,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53535436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:39,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:39,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:39,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176097839] [2024-06-27 22:33:39,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:39,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:39,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:39,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:39,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:39,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:39,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 355 transitions, 6200 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:39,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:39,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:39,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:39,782 INFO L124 PetriNetUnfolderBase]: 1493/2933 cut-off events. [2024-06-27 22:33:39,783 INFO L125 PetriNetUnfolderBase]: For 60683/60685 co-relation queries the response was YES. [2024-06-27 22:33:39,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18666 conditions, 2933 events. 1493/2933 cut-off events. For 60683/60685 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 20248 event pairs, 261 based on Foata normal form. 1/2793 useless extension candidates. Maximal degree in co-relation 18549. Up to 1909 conditions per place. [2024-06-27 22:33:39,816 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 236 selfloop transitions, 139 changer transitions 0/386 dead transitions. [2024-06-27 22:33:39,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 386 transitions, 7208 flow [2024-06-27 22:33:39,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:39,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:33:39,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:33:39,818 INFO L175 Difference]: Start difference. First operand has 242 places, 355 transitions, 6200 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:33:39,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 386 transitions, 7208 flow [2024-06-27 22:33:40,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 386 transitions, 7083 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:40,053 INFO L231 Difference]: Finished difference. Result has 248 places, 364 transitions, 6577 flow [2024-06-27 22:33:40,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6075, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6577, PETRI_PLACES=248, PETRI_TRANSITIONS=364} [2024-06-27 22:33:40,054 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-27 22:33:40,054 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 364 transitions, 6577 flow [2024-06-27 22:33:40,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:40,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:40,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:40,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:33:40,055 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:40,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:40,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1208937954, now seen corresponding path program 6 times [2024-06-27 22:33:40,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:40,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122079639] [2024-06-27 22:33:40,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:40,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:41,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:41,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122079639] [2024-06-27 22:33:41,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122079639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:41,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:41,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:41,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485750219] [2024-06-27 22:33:41,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:41,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:41,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:41,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:41,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:41,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 22:33:41,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 364 transitions, 6577 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 22:33:41,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:41,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 22:33:41,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:42,090 INFO L124 PetriNetUnfolderBase]: 1425/2846 cut-off events. [2024-06-27 22:33:42,090 INFO L125 PetriNetUnfolderBase]: For 61754/61757 co-relation queries the response was YES. [2024-06-27 22:33:42,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18468 conditions, 2846 events. 1425/2846 cut-off events. For 61754/61757 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 19848 event pairs, 244 based on Foata normal form. 3/2713 useless extension candidates. Maximal degree in co-relation 18347. Up to 1889 conditions per place. [2024-06-27 22:33:42,124 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 244 selfloop transitions, 76 changer transitions 0/386 dead transitions. [2024-06-27 22:33:42,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 386 transitions, 7305 flow [2024-06-27 22:33:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:42,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:42,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 22:33:42,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-27 22:33:42,125 INFO L175 Difference]: Start difference. First operand has 248 places, 364 transitions, 6577 flow. Second operand 8 states and 151 transitions. [2024-06-27 22:33:42,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 386 transitions, 7305 flow [2024-06-27 22:33:42,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 386 transitions, 7156 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:42,368 INFO L231 Difference]: Finished difference. Result has 252 places, 364 transitions, 6590 flow [2024-06-27 22:33:42,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6428, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6590, PETRI_PLACES=252, PETRI_TRANSITIONS=364} [2024-06-27 22:33:42,369 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-27 22:33:42,369 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 364 transitions, 6590 flow [2024-06-27 22:33:42,369 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 22:33:42,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:42,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:42,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:33:42,370 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:42,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:42,370 INFO L85 PathProgramCache]: Analyzing trace with hash 470407824, now seen corresponding path program 11 times [2024-06-27 22:33:42,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:42,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260858092] [2024-06-27 22:33:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:42,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:43,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:43,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260858092] [2024-06-27 22:33:43,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260858092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:43,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:43,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:43,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657654532] [2024-06-27 22:33:43,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:43,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:43,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:43,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:43,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:43,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:43,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 364 transitions, 6590 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:43,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:43,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:43,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:44,651 INFO L124 PetriNetUnfolderBase]: 1663/3174 cut-off events. [2024-06-27 22:33:44,651 INFO L125 PetriNetUnfolderBase]: For 61499/61499 co-relation queries the response was YES. [2024-06-27 22:33:44,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20911 conditions, 3174 events. 1663/3174 cut-off events. For 61499/61499 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 21505 event pairs, 282 based on Foata normal form. 1/3050 useless extension candidates. Maximal degree in co-relation 20789. Up to 2128 conditions per place. [2024-06-27 22:33:44,689 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 251 selfloop transitions, 147 changer transitions 0/405 dead transitions. [2024-06-27 22:33:44,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 405 transitions, 7775 flow [2024-06-27 22:33:44,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 22:33:44,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168918918918919 [2024-06-27 22:33:44,690 INFO L175 Difference]: Start difference. First operand has 252 places, 364 transitions, 6590 flow. Second operand 8 states and 153 transitions. [2024-06-27 22:33:44,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 405 transitions, 7775 flow [2024-06-27 22:33:44,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 405 transitions, 7595 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:44,917 INFO L231 Difference]: Finished difference. Result has 253 places, 370 transitions, 6829 flow [2024-06-27 22:33:44,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6412, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6829, PETRI_PLACES=253, PETRI_TRANSITIONS=370} [2024-06-27 22:33:44,918 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-06-27 22:33:44,918 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 370 transitions, 6829 flow [2024-06-27 22:33:44,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:44,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:44,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:44,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:33:44,918 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:44,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:44,918 INFO L85 PathProgramCache]: Analyzing trace with hash 441092364, now seen corresponding path program 12 times [2024-06-27 22:33:44,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:44,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122821415] [2024-06-27 22:33:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:44,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:46,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:46,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122821415] [2024-06-27 22:33:46,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122821415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:46,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:46,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:46,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541024042] [2024-06-27 22:33:46,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:46,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:46,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:46,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:46,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:46,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:46,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 370 transitions, 6829 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 22:33:46,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:46,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:46,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:47,209 INFO L124 PetriNetUnfolderBase]: 1532/3016 cut-off events. [2024-06-27 22:33:47,209 INFO L125 PetriNetUnfolderBase]: For 61923/61925 co-relation queries the response was YES. [2024-06-27 22:33:47,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19955 conditions, 3016 events. 1532/3016 cut-off events. For 61923/61925 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 21034 event pairs, 265 based on Foata normal form. 1/2869 useless extension candidates. Maximal degree in co-relation 19832. Up to 2016 conditions per place. [2024-06-27 22:33:47,242 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 261 selfloop transitions, 133 changer transitions 0/405 dead transitions. [2024-06-27 22:33:47,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 405 transitions, 7956 flow [2024-06-27 22:33:47,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:47,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:33:47,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 22:33:47,244 INFO L175 Difference]: Start difference. First operand has 253 places, 370 transitions, 6829 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:33:47,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 405 transitions, 7956 flow [2024-06-27 22:33:47,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 405 transitions, 7735 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:47,547 INFO L231 Difference]: Finished difference. Result has 257 places, 383 transitions, 7223 flow [2024-06-27 22:33:47,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6618, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7223, PETRI_PLACES=257, PETRI_TRANSITIONS=383} [2024-06-27 22:33:47,548 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-27 22:33:47,548 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 383 transitions, 7223 flow [2024-06-27 22:33:47,548 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 22:33:47,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:47,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:47,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:33:47,549 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:47,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:47,549 INFO L85 PathProgramCache]: Analyzing trace with hash 441099060, now seen corresponding path program 7 times [2024-06-27 22:33:47,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:47,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264300536] [2024-06-27 22:33:47,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:47,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:49,128 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 22:33:49,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:49,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264300536] [2024-06-27 22:33:49,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264300536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:49,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:49,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:49,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994461421] [2024-06-27 22:33:49,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:49,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:49,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:49,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:49,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:49,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:49,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 383 transitions, 7223 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:49,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:49,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:49,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:50,139 INFO L124 PetriNetUnfolderBase]: 1724/3278 cut-off events. [2024-06-27 22:33:50,139 INFO L125 PetriNetUnfolderBase]: For 63124/63124 co-relation queries the response was YES. [2024-06-27 22:33:50,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22126 conditions, 3278 events. 1724/3278 cut-off events. For 63124/63124 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 22342 event pairs, 263 based on Foata normal form. 1/3156 useless extension candidates. Maximal degree in co-relation 22001. Up to 2303 conditions per place. [2024-06-27 22:33:50,178 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 289 selfloop transitions, 130 changer transitions 0/426 dead transitions. [2024-06-27 22:33:50,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 426 transitions, 8404 flow [2024-06-27 22:33:50,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:33:50,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:33:50,179 INFO L175 Difference]: Start difference. First operand has 257 places, 383 transitions, 7223 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:33:50,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 426 transitions, 8404 flow [2024-06-27 22:33:50,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 426 transitions, 8224 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:50,445 INFO L231 Difference]: Finished difference. Result has 264 places, 394 transitions, 7433 flow [2024-06-27 22:33:50,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7045, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7433, PETRI_PLACES=264, PETRI_TRANSITIONS=394} [2024-06-27 22:33:50,446 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 223 predicate places. [2024-06-27 22:33:50,446 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 394 transitions, 7433 flow [2024-06-27 22:33:50,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:50,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:50,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:50,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:33:50,446 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:50,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:50,447 INFO L85 PathProgramCache]: Analyzing trace with hash 441092550, now seen corresponding path program 8 times [2024-06-27 22:33:50,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:50,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206373135] [2024-06-27 22:33:50,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:50,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:51,905 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 22:33:51,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:51,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206373135] [2024-06-27 22:33:51,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206373135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:51,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:51,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:51,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090406702] [2024-06-27 22:33:51,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:51,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:51,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:51,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:51,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:51,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:51,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 394 transitions, 7433 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:51,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:51,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:51,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:52,953 INFO L124 PetriNetUnfolderBase]: 1732/3290 cut-off events. [2024-06-27 22:33:52,953 INFO L125 PetriNetUnfolderBase]: For 64718/64718 co-relation queries the response was YES. [2024-06-27 22:33:52,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22416 conditions, 3290 events. 1732/3290 cut-off events. For 64718/64718 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 22389 event pairs, 263 based on Foata normal form. 1/3168 useless extension candidates. Maximal degree in co-relation 22289. Up to 2312 conditions per place. [2024-06-27 22:33:52,989 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 292 selfloop transitions, 130 changer transitions 0/429 dead transitions. [2024-06-27 22:33:52,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 429 transitions, 8570 flow [2024-06-27 22:33:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:52,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:52,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:33:52,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 22:33:52,991 INFO L175 Difference]: Start difference. First operand has 264 places, 394 transitions, 7433 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:33:52,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 429 transitions, 8570 flow [2024-06-27 22:33:53,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 429 transitions, 8349 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:53,338 INFO L231 Difference]: Finished difference. Result has 268 places, 397 transitions, 7513 flow [2024-06-27 22:33:53,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7225, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7513, PETRI_PLACES=268, PETRI_TRANSITIONS=397} [2024-06-27 22:33:53,339 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-06-27 22:33:53,339 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 397 transitions, 7513 flow [2024-06-27 22:33:53,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:53,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:53,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:53,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:33:53,339 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:53,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:53,340 INFO L85 PathProgramCache]: Analyzing trace with hash 440919384, now seen corresponding path program 13 times [2024-06-27 22:33:53,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:53,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354593183] [2024-06-27 22:33:53,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:53,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:54,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:54,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354593183] [2024-06-27 22:33:54,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354593183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:54,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:54,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:54,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116284341] [2024-06-27 22:33:54,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:54,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:54,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:54,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:54,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:33:54,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 397 transitions, 7513 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 22:33:54,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:54,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:33:54,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:55,442 INFO L124 PetriNetUnfolderBase]: 1566/3043 cut-off events. [2024-06-27 22:33:55,443 INFO L125 PetriNetUnfolderBase]: For 64336/64341 co-relation queries the response was YES. [2024-06-27 22:33:55,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20793 conditions, 3043 events. 1566/3043 cut-off events. For 64336/64341 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21006 event pairs, 276 based on Foata normal form. 2/2903 useless extension candidates. Maximal degree in co-relation 20665. Up to 2067 conditions per place. [2024-06-27 22:33:55,477 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 264 selfloop transitions, 152 changer transitions 0/427 dead transitions. [2024-06-27 22:33:55,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 427 transitions, 8546 flow [2024-06-27 22:33:55,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:55,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:55,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:33:55,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2024-06-27 22:33:55,478 INFO L175 Difference]: Start difference. First operand has 268 places, 397 transitions, 7513 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:33:55,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 427 transitions, 8546 flow [2024-06-27 22:33:55,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 427 transitions, 8307 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:55,725 INFO L231 Difference]: Finished difference. Result has 271 places, 402 transitions, 7779 flow [2024-06-27 22:33:55,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7280, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7779, PETRI_PLACES=271, PETRI_TRANSITIONS=402} [2024-06-27 22:33:55,725 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-27 22:33:55,726 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 402 transitions, 7779 flow [2024-06-27 22:33:55,726 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 22:33:55,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:55,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:55,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:33:55,726 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:55,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:55,727 INFO L85 PathProgramCache]: Analyzing trace with hash 440919570, now seen corresponding path program 9 times [2024-06-27 22:33:55,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:55,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261517827] [2024-06-27 22:33:55,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:55,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:57,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:57,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261517827] [2024-06-27 22:33:57,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261517827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:57,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:57,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:57,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840291809] [2024-06-27 22:33:57,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:57,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:57,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:57,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:33:57,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 402 transitions, 7779 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:57,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:57,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:33:57,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:58,316 INFO L124 PetriNetUnfolderBase]: 1755/3323 cut-off events. [2024-06-27 22:33:58,316 INFO L125 PetriNetUnfolderBase]: For 67117/67117 co-relation queries the response was YES. [2024-06-27 22:33:58,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22785 conditions, 3323 events. 1755/3323 cut-off events. For 67117/67117 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22666 event pairs, 277 based on Foata normal form. 1/3201 useless extension candidates. Maximal degree in co-relation 22655. Up to 2342 conditions per place. [2024-06-27 22:33:58,358 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 287 selfloop transitions, 150 changer transitions 0/444 dead transitions. [2024-06-27 22:33:58,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 444 transitions, 8925 flow [2024-06-27 22:33:58,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:58,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:33:58,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924924924924925 [2024-06-27 22:33:58,359 INFO L175 Difference]: Start difference. First operand has 271 places, 402 transitions, 7779 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:33:58,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 444 transitions, 8925 flow [2024-06-27 22:33:58,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 444 transitions, 8779 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:58,661 INFO L231 Difference]: Finished difference. Result has 278 places, 416 transitions, 8161 flow [2024-06-27 22:33:58,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7633, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8161, PETRI_PLACES=278, PETRI_TRANSITIONS=416} [2024-06-27 22:33:58,662 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 237 predicate places. [2024-06-27 22:33:58,662 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 416 transitions, 8161 flow [2024-06-27 22:33:58,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:58,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:58,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:58,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:33:58,663 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:58,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:58,663 INFO L85 PathProgramCache]: Analyzing trace with hash 441099308, now seen corresponding path program 1 times [2024-06-27 22:33:58,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:58,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581293908] [2024-06-27 22:33:58,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:58,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:00,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:00,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:00,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581293908] [2024-06-27 22:34:00,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581293908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:00,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:00,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:00,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769021526] [2024-06-27 22:34:00,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:00,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:00,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:00,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:00,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:00,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:00,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 416 transitions, 8161 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:00,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:00,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:00,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:01,344 INFO L124 PetriNetUnfolderBase]: 2114/4153 cut-off events. [2024-06-27 22:34:01,345 INFO L125 PetriNetUnfolderBase]: For 80770/80770 co-relation queries the response was YES. [2024-06-27 22:34:01,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27217 conditions, 4153 events. 2114/4153 cut-off events. For 80770/80770 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 30999 event pairs, 371 based on Foata normal form. 4/3972 useless extension candidates. Maximal degree in co-relation 27085. Up to 1918 conditions per place. [2024-06-27 22:34:01,389 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 341 selfloop transitions, 177 changer transitions 0/525 dead transitions. [2024-06-27 22:34:01,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 525 transitions, 10612 flow [2024-06-27 22:34:01,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:01,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:01,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 22:34:01,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518918918918919 [2024-06-27 22:34:01,390 INFO L175 Difference]: Start difference. First operand has 278 places, 416 transitions, 8161 flow. Second operand 10 states and 192 transitions. [2024-06-27 22:34:01,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 525 transitions, 10612 flow [2024-06-27 22:34:01,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 525 transitions, 10444 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:01,656 INFO L231 Difference]: Finished difference. Result has 288 places, 464 transitions, 9293 flow [2024-06-27 22:34:01,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7993, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9293, PETRI_PLACES=288, PETRI_TRANSITIONS=464} [2024-06-27 22:34:01,657 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-27 22:34:01,657 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 464 transitions, 9293 flow [2024-06-27 22:34:01,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:01,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:01,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:01,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:34:01,657 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:01,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:01,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1673253427, now seen corresponding path program 1 times [2024-06-27 22:34:01,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:01,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381583875] [2024-06-27 22:34:01,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:01,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:03,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:03,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381583875] [2024-06-27 22:34:03,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381583875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:03,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:03,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:03,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217436922] [2024-06-27 22:34:03,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:03,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:03,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:03,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:03,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:03,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:03,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 464 transitions, 9293 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:03,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:03,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:03,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:05,154 INFO L124 PetriNetUnfolderBase]: 2111/4146 cut-off events. [2024-06-27 22:34:05,154 INFO L125 PetriNetUnfolderBase]: For 83261/83261 co-relation queries the response was YES. [2024-06-27 22:34:05,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28670 conditions, 4146 events. 2111/4146 cut-off events. For 83261/83261 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 30779 event pairs, 506 based on Foata normal form. 2/3965 useless extension candidates. Maximal degree in co-relation 28532. Up to 3289 conditions per place. [2024-06-27 22:34:05,202 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 465 selfloop transitions, 24 changer transitions 0/496 dead transitions. [2024-06-27 22:34:05,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 496 transitions, 10429 flow [2024-06-27 22:34:05,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:05,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 22:34:05,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 22:34:05,203 INFO L175 Difference]: Start difference. First operand has 288 places, 464 transitions, 9293 flow. Second operand 10 states and 161 transitions. [2024-06-27 22:34:05,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 496 transitions, 10429 flow [2024-06-27 22:34:05,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 496 transitions, 10262 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-27 22:34:05,528 INFO L231 Difference]: Finished difference. Result has 295 places, 466 transitions, 9216 flow [2024-06-27 22:34:05,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9138, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9216, PETRI_PLACES=295, PETRI_TRANSITIONS=466} [2024-06-27 22:34:05,529 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-27 22:34:05,529 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 466 transitions, 9216 flow [2024-06-27 22:34:05,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:05,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:05,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:05,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:34:05,530 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:05,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash -862908327, now seen corresponding path program 1 times [2024-06-27 22:34:05,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:05,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740088225] [2024-06-27 22:34:05,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:05,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:05,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:05,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740088225] [2024-06-27 22:34:05,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740088225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:05,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:05,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:34:05,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046078465] [2024-06-27 22:34:05,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:05,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:34:05,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:05,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:34:05,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:34:05,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 22:34:05,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 466 transitions, 9216 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 22:34:05,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:05,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 22:34:05,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:05,984 INFO L124 PetriNetUnfolderBase]: 838/1657 cut-off events. [2024-06-27 22:34:05,984 INFO L125 PetriNetUnfolderBase]: For 44011/44134 co-relation queries the response was YES. [2024-06-27 22:34:05,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12173 conditions, 1657 events. 838/1657 cut-off events. For 44011/44134 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 10169 event pairs, 150 based on Foata normal form. 169/1640 useless extension candidates. Maximal degree in co-relation 12033. Up to 646 conditions per place. [2024-06-27 22:34:06,002 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 127 selfloop transitions, 51 changer transitions 0/303 dead transitions. [2024-06-27 22:34:06,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 303 transitions, 6325 flow [2024-06-27 22:34:06,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:34:06,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:34:06,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-27 22:34:06,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6959459459459459 [2024-06-27 22:34:06,003 INFO L175 Difference]: Start difference. First operand has 295 places, 466 transitions, 9216 flow. Second operand 4 states and 103 transitions. [2024-06-27 22:34:06,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 303 transitions, 6325 flow [2024-06-27 22:34:06,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 303 transitions, 4246 flow, removed 96 selfloop flow, removed 83 redundant places. [2024-06-27 22:34:06,146 INFO L231 Difference]: Finished difference. Result has 217 places, 288 transitions, 4022 flow [2024-06-27 22:34:06,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3796, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4022, PETRI_PLACES=217, PETRI_TRANSITIONS=288} [2024-06-27 22:34:06,146 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-27 22:34:06,147 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 288 transitions, 4022 flow [2024-06-27 22:34:06,147 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 22:34:06,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:06,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:06,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:34:06,147 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:06,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:06,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1213820364, now seen corresponding path program 1 times [2024-06-27 22:34:06,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:06,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603752199] [2024-06-27 22:34:06,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:06,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:07,595 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 22:34:07,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:07,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603752199] [2024-06-27 22:34:07,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603752199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:07,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:07,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:07,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611734653] [2024-06-27 22:34:07,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:07,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:07,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:07,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:07,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:07,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 288 transitions, 4022 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:07,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:07,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:07,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:08,173 INFO L124 PetriNetUnfolderBase]: 1048/1985 cut-off events. [2024-06-27 22:34:08,174 INFO L125 PetriNetUnfolderBase]: For 40628/40628 co-relation queries the response was YES. [2024-06-27 22:34:08,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11890 conditions, 1985 events. 1048/1985 cut-off events. For 40628/40628 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11630 event pairs, 270 based on Foata normal form. 1/1893 useless extension candidates. Maximal degree in co-relation 11789. Up to 1566 conditions per place. [2024-06-27 22:34:08,193 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 216 selfloop transitions, 91 changer transitions 0/315 dead transitions. [2024-06-27 22:34:08,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 315 transitions, 4852 flow [2024-06-27 22:34:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:08,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-27 22:34:08,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43543543543543545 [2024-06-27 22:34:08,195 INFO L175 Difference]: Start difference. First operand has 217 places, 288 transitions, 4022 flow. Second operand 9 states and 145 transitions. [2024-06-27 22:34:08,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 315 transitions, 4852 flow [2024-06-27 22:34:08,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 315 transitions, 4803 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:08,338 INFO L231 Difference]: Finished difference. Result has 221 places, 298 transitions, 4349 flow [2024-06-27 22:34:08,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3975, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4349, PETRI_PLACES=221, PETRI_TRANSITIONS=298} [2024-06-27 22:34:08,339 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-27 22:34:08,339 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 298 transitions, 4349 flow [2024-06-27 22:34:08,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:08,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:08,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:08,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:34:08,339 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:08,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1843561267, now seen corresponding path program 1 times [2024-06-27 22:34:08,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:08,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041113510] [2024-06-27 22:34:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:08,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:10,047 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 22:34:10,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:10,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041113510] [2024-06-27 22:34:10,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041113510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:10,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:10,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:10,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744181487] [2024-06-27 22:34:10,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:10,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:10,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:10,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:10,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:10,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:10,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 298 transitions, 4349 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:10,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:10,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:10,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:10,718 INFO L124 PetriNetUnfolderBase]: 1085/2019 cut-off events. [2024-06-27 22:34:10,719 INFO L125 PetriNetUnfolderBase]: For 44830/44830 co-relation queries the response was YES. [2024-06-27 22:34:10,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12502 conditions, 2019 events. 1085/2019 cut-off events. For 44830/44830 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11792 event pairs, 237 based on Foata normal form. 2/1929 useless extension candidates. Maximal degree in co-relation 12399. Up to 1414 conditions per place. [2024-06-27 22:34:10,734 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 251 selfloop transitions, 70 changer transitions 0/329 dead transitions. [2024-06-27 22:34:10,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 329 transitions, 5227 flow [2024-06-27 22:34:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:10,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:34:10,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 22:34:10,740 INFO L175 Difference]: Start difference. First operand has 221 places, 298 transitions, 4349 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:34:10,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 329 transitions, 5227 flow [2024-06-27 22:34:10,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 329 transitions, 5119 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:10,897 INFO L231 Difference]: Finished difference. Result has 225 places, 300 transitions, 4403 flow [2024-06-27 22:34:10,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4241, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4403, PETRI_PLACES=225, PETRI_TRANSITIONS=300} [2024-06-27 22:34:10,898 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 184 predicate places. [2024-06-27 22:34:10,898 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 300 transitions, 4403 flow [2024-06-27 22:34:10,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:10,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:10,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:10,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:34:10,899 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:10,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:10,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1845438937, now seen corresponding path program 2 times [2024-06-27 22:34:10,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:10,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751090047] [2024-06-27 22:34:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:10,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:12,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:12,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751090047] [2024-06-27 22:34:12,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751090047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:12,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:12,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:12,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767994560] [2024-06-27 22:34:12,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:12,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:12,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:12,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:12,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:12,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:12,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 300 transitions, 4403 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:12,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:12,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:12,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:13,099 INFO L124 PetriNetUnfolderBase]: 1102/2098 cut-off events. [2024-06-27 22:34:13,099 INFO L125 PetriNetUnfolderBase]: For 46804/46804 co-relation queries the response was YES. [2024-06-27 22:34:13,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12780 conditions, 2098 events. 1102/2098 cut-off events. For 46804/46804 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12499 event pairs, 313 based on Foata normal form. 2/1996 useless extension candidates. Maximal degree in co-relation 12676. Up to 1664 conditions per place. [2024-06-27 22:34:13,118 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 243 selfloop transitions, 69 changer transitions 0/320 dead transitions. [2024-06-27 22:34:13,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 320 transitions, 5113 flow [2024-06-27 22:34:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 22:34:13,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2024-06-27 22:34:13,120 INFO L175 Difference]: Start difference. First operand has 225 places, 300 transitions, 4403 flow. Second operand 9 states and 146 transitions. [2024-06-27 22:34:13,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 320 transitions, 5113 flow [2024-06-27 22:34:13,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 320 transitions, 5011 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:13,284 INFO L231 Difference]: Finished difference. Result has 229 places, 301 transitions, 4455 flow [2024-06-27 22:34:13,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4303, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4455, PETRI_PLACES=229, PETRI_TRANSITIONS=301} [2024-06-27 22:34:13,285 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 188 predicate places. [2024-06-27 22:34:13,285 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 301 transitions, 4455 flow [2024-06-27 22:34:13,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:13,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:13,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:13,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:34:13,286 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:13,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1845439092, now seen corresponding path program 2 times [2024-06-27 22:34:13,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:13,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992345972] [2024-06-27 22:34:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:13,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:14,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:14,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992345972] [2024-06-27 22:34:14,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992345972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:14,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:14,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:14,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629954379] [2024-06-27 22:34:14,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:14,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:14,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:14,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:14,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:14,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:14,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 301 transitions, 4455 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:14,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:14,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:14,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:15,427 INFO L124 PetriNetUnfolderBase]: 1116/2119 cut-off events. [2024-06-27 22:34:15,428 INFO L125 PetriNetUnfolderBase]: For 48330/48330 co-relation queries the response was YES. [2024-06-27 22:34:15,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13059 conditions, 2119 events. 1116/2119 cut-off events. For 48330/48330 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12620 event pairs, 300 based on Foata normal form. 1/2013 useless extension candidates. Maximal degree in co-relation 12953. Up to 1552 conditions per place. [2024-06-27 22:34:15,447 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 231 selfloop transitions, 85 changer transitions 0/324 dead transitions. [2024-06-27 22:34:15,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 324 transitions, 5320 flow [2024-06-27 22:34:15,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:15,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:15,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 22:34:15,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 22:34:15,449 INFO L175 Difference]: Start difference. First operand has 229 places, 301 transitions, 4455 flow. Second operand 9 states and 147 transitions. [2024-06-27 22:34:15,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 324 transitions, 5320 flow [2024-06-27 22:34:15,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 324 transitions, 5182 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:15,618 INFO L231 Difference]: Finished difference. Result has 231 places, 305 transitions, 4536 flow [2024-06-27 22:34:15,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4317, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4536, PETRI_PLACES=231, PETRI_TRANSITIONS=305} [2024-06-27 22:34:15,618 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-27 22:34:15,618 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 305 transitions, 4536 flow [2024-06-27 22:34:15,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:15,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:15,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:15,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:34:15,619 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:15,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:15,619 INFO L85 PathProgramCache]: Analyzing trace with hash -881067805, now seen corresponding path program 3 times [2024-06-27 22:34:15,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:15,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400588331] [2024-06-27 22:34:15,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:15,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:17,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:17,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:17,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400588331] [2024-06-27 22:34:17,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400588331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:17,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:17,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:17,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916510577] [2024-06-27 22:34:17,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:17,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:17,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:17,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:17,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:17,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:17,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 305 transitions, 4536 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:17,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:17,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:17,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:17,885 INFO L124 PetriNetUnfolderBase]: 1133/2151 cut-off events. [2024-06-27 22:34:17,885 INFO L125 PetriNetUnfolderBase]: For 51537/51537 co-relation queries the response was YES. [2024-06-27 22:34:17,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13309 conditions, 2151 events. 1133/2151 cut-off events. For 51537/51537 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12874 event pairs, 307 based on Foata normal form. 2/2046 useless extension candidates. Maximal degree in co-relation 13202. Up to 1664 conditions per place. [2024-06-27 22:34:17,906 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 251 selfloop transitions, 70 changer transitions 0/329 dead transitions. [2024-06-27 22:34:17,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 329 transitions, 5284 flow [2024-06-27 22:34:17,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:17,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 22:34:17,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:34:17,907 INFO L175 Difference]: Start difference. First operand has 231 places, 305 transitions, 4536 flow. Second operand 10 states and 160 transitions. [2024-06-27 22:34:17,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 329 transitions, 5284 flow [2024-06-27 22:34:18,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 329 transitions, 5190 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:18,139 INFO L231 Difference]: Finished difference. Result has 236 places, 306 transitions, 4598 flow [2024-06-27 22:34:18,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4442, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4598, PETRI_PLACES=236, PETRI_TRANSITIONS=306} [2024-06-27 22:34:18,140 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-27 22:34:18,140 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 306 transitions, 4598 flow [2024-06-27 22:34:18,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:18,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:18,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:18,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:34:18,140 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:18,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:18,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1932275052, now seen corresponding path program 3 times [2024-06-27 22:34:18,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:18,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036852012] [2024-06-27 22:34:18,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:18,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:19,687 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 22:34:19,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:19,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036852012] [2024-06-27 22:34:19,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036852012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:19,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:19,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:19,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820851436] [2024-06-27 22:34:19,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:19,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:19,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:19,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:19,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:19,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:19,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 306 transitions, 4598 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:19,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:19,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:19,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:20,467 INFO L124 PetriNetUnfolderBase]: 1139/2178 cut-off events. [2024-06-27 22:34:20,468 INFO L125 PetriNetUnfolderBase]: For 51943/51943 co-relation queries the response was YES. [2024-06-27 22:34:20,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13602 conditions, 2178 events. 1139/2178 cut-off events. For 51943/51943 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13176 event pairs, 308 based on Foata normal form. 1/2072 useless extension candidates. Maximal degree in co-relation 13493. Up to 1680 conditions per place. [2024-06-27 22:34:20,490 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 222 selfloop transitions, 98 changer transitions 0/328 dead transitions. [2024-06-27 22:34:20,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 328 transitions, 5399 flow [2024-06-27 22:34:20,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:20,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 22:34:20,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-27 22:34:20,492 INFO L175 Difference]: Start difference. First operand has 236 places, 306 transitions, 4598 flow. Second operand 10 states and 158 transitions. [2024-06-27 22:34:20,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 328 transitions, 5399 flow [2024-06-27 22:34:20,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 328 transitions, 5257 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:20,698 INFO L231 Difference]: Finished difference. Result has 238 places, 308 transitions, 4681 flow [2024-06-27 22:34:20,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4456, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4681, PETRI_PLACES=238, PETRI_TRANSITIONS=308} [2024-06-27 22:34:20,698 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 197 predicate places. [2024-06-27 22:34:20,698 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 308 transitions, 4681 flow [2024-06-27 22:34:20,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:20,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:20,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:20,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:34:20,699 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:20,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:20,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1932274897, now seen corresponding path program 4 times [2024-06-27 22:34:20,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:20,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55252188] [2024-06-27 22:34:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:20,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:22,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:22,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55252188] [2024-06-27 22:34:22,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55252188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:22,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:22,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:22,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749959401] [2024-06-27 22:34:22,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:22,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:22,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:22,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:22,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:22,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:22,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 308 transitions, 4681 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:22,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:22,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:22,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:22,939 INFO L124 PetriNetUnfolderBase]: 1156/2217 cut-off events. [2024-06-27 22:34:22,939 INFO L125 PetriNetUnfolderBase]: For 55104/55104 co-relation queries the response was YES. [2024-06-27 22:34:22,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13820 conditions, 2217 events. 1156/2217 cut-off events. For 55104/55104 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 13503 event pairs, 333 based on Foata normal form. 2/2110 useless extension candidates. Maximal degree in co-relation 13710. Up to 1822 conditions per place. [2024-06-27 22:34:22,961 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 252 selfloop transitions, 67 changer transitions 0/327 dead transitions. [2024-06-27 22:34:22,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 327 transitions, 5431 flow [2024-06-27 22:34:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:22,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-27 22:34:22,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43543543543543545 [2024-06-27 22:34:22,962 INFO L175 Difference]: Start difference. First operand has 238 places, 308 transitions, 4681 flow. Second operand 9 states and 145 transitions. [2024-06-27 22:34:22,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 327 transitions, 5431 flow [2024-06-27 22:34:23,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 327 transitions, 5299 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:23,171 INFO L231 Difference]: Finished difference. Result has 240 places, 309 transitions, 4701 flow [2024-06-27 22:34:23,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4549, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4701, PETRI_PLACES=240, PETRI_TRANSITIONS=309} [2024-06-27 22:34:23,172 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-06-27 22:34:23,172 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 309 transitions, 4701 flow [2024-06-27 22:34:23,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:23,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:23,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:23,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:34:23,172 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:23,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:23,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1259051635, now seen corresponding path program 5 times [2024-06-27 22:34:23,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:23,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267810140] [2024-06-27 22:34:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:23,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:24,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:24,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267810140] [2024-06-27 22:34:24,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267810140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:24,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:24,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:24,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473283936] [2024-06-27 22:34:24,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:24,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:24,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:24,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:24,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:24,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:24,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 309 transitions, 4701 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:24,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:24,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:24,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:25,360 INFO L124 PetriNetUnfolderBase]: 1193/2301 cut-off events. [2024-06-27 22:34:25,360 INFO L125 PetriNetUnfolderBase]: For 60500/60500 co-relation queries the response was YES. [2024-06-27 22:34:25,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14283 conditions, 2301 events. 1193/2301 cut-off events. For 60500/60500 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 14234 event pairs, 337 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 14172. Up to 1801 conditions per place. [2024-06-27 22:34:25,382 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 257 selfloop transitions, 70 changer transitions 0/335 dead transitions. [2024-06-27 22:34:25,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 335 transitions, 5621 flow [2024-06-27 22:34:25,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:25,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 22:34:25,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-27 22:34:25,383 INFO L175 Difference]: Start difference. First operand has 240 places, 309 transitions, 4701 flow. Second operand 9 states and 151 transitions. [2024-06-27 22:34:25,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 335 transitions, 5621 flow [2024-06-27 22:34:25,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 335 transitions, 5498 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:25,610 INFO L231 Difference]: Finished difference. Result has 243 places, 311 transitions, 4752 flow [2024-06-27 22:34:25,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4578, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4752, PETRI_PLACES=243, PETRI_TRANSITIONS=311} [2024-06-27 22:34:25,610 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-27 22:34:25,610 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 311 transitions, 4752 flow [2024-06-27 22:34:25,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:25,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:25,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:25,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:34:25,610 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:25,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1932130902, now seen corresponding path program 4 times [2024-06-27 22:34:25,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:25,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593631350] [2024-06-27 22:34:25,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:25,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:27,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:27,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593631350] [2024-06-27 22:34:27,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593631350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:27,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:27,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:27,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728992547] [2024-06-27 22:34:27,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:27,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:27,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:27,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:27,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:27,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:27,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 311 transitions, 4752 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:27,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:27,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:27,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:27,902 INFO L124 PetriNetUnfolderBase]: 1199/2310 cut-off events. [2024-06-27 22:34:27,902 INFO L125 PetriNetUnfolderBase]: For 61163/61163 co-relation queries the response was YES. [2024-06-27 22:34:27,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14418 conditions, 2310 events. 1199/2310 cut-off events. For 61163/61163 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 14292 event pairs, 332 based on Foata normal form. 1/2194 useless extension candidates. Maximal degree in co-relation 14306. Up to 1786 conditions per place. [2024-06-27 22:34:27,925 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 232 selfloop transitions, 97 changer transitions 0/337 dead transitions. [2024-06-27 22:34:27,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 337 transitions, 5615 flow [2024-06-27 22:34:27,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:27,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:27,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 22:34:27,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-27 22:34:27,926 INFO L175 Difference]: Start difference. First operand has 243 places, 311 transitions, 4752 flow. Second operand 10 states and 158 transitions. [2024-06-27 22:34:27,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 337 transitions, 5615 flow [2024-06-27 22:34:28,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 337 transitions, 5517 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:28,157 INFO L231 Difference]: Finished difference. Result has 249 places, 316 transitions, 4982 flow [2024-06-27 22:34:28,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4654, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4982, PETRI_PLACES=249, PETRI_TRANSITIONS=316} [2024-06-27 22:34:28,157 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-06-27 22:34:28,158 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 316 transitions, 4982 flow [2024-06-27 22:34:28,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:28,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:28,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:28,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:34:28,158 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:28,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:28,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1932130747, now seen corresponding path program 6 times [2024-06-27 22:34:28,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:28,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181914583] [2024-06-27 22:34:28,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:28,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:29,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:29,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181914583] [2024-06-27 22:34:29,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181914583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:29,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:29,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:29,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193872863] [2024-06-27 22:34:29,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:29,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:29,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:29,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:29,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:30,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:30,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 316 transitions, 4982 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:30,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:30,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:30,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:30,663 INFO L124 PetriNetUnfolderBase]: 1196/2305 cut-off events. [2024-06-27 22:34:30,663 INFO L125 PetriNetUnfolderBase]: For 61747/61747 co-relation queries the response was YES. [2024-06-27 22:34:30,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14674 conditions, 2305 events. 1196/2305 cut-off events. For 61747/61747 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 14258 event pairs, 354 based on Foata normal form. 2/2191 useless extension candidates. Maximal degree in co-relation 14559. Up to 1881 conditions per place. [2024-06-27 22:34:30,685 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 259 selfloop transitions, 68 changer transitions 0/335 dead transitions. [2024-06-27 22:34:30,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 335 transitions, 5742 flow [2024-06-27 22:34:30,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:30,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 22:34:30,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 22:34:30,686 INFO L175 Difference]: Start difference. First operand has 249 places, 316 transitions, 4982 flow. Second operand 10 states and 155 transitions. [2024-06-27 22:34:30,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 335 transitions, 5742 flow [2024-06-27 22:34:30,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 335 transitions, 5597 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:30,911 INFO L231 Difference]: Finished difference. Result has 252 places, 316 transitions, 4977 flow [2024-06-27 22:34:30,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4837, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4977, PETRI_PLACES=252, PETRI_TRANSITIONS=316} [2024-06-27 22:34:30,912 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-27 22:34:30,912 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 316 transitions, 4977 flow [2024-06-27 22:34:30,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:30,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:30,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:30,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:34:30,913 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:30,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:30,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1979992661, now seen corresponding path program 7 times [2024-06-27 22:34:30,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:30,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858174755] [2024-06-27 22:34:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:30,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:32,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:32,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858174755] [2024-06-27 22:34:32,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858174755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:32,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:32,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:32,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082525613] [2024-06-27 22:34:32,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:32,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:32,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:32,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:32,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:32,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:32,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 316 transitions, 4977 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:32,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:32,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:32,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:33,082 INFO L124 PetriNetUnfolderBase]: 1213/2292 cut-off events. [2024-06-27 22:34:33,082 INFO L125 PetriNetUnfolderBase]: For 63699/63699 co-relation queries the response was YES. [2024-06-27 22:34:33,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14722 conditions, 2292 events. 1213/2292 cut-off events. For 63699/63699 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 14015 event pairs, 291 based on Foata normal form. 2/2184 useless extension candidates. Maximal degree in co-relation 14606. Up to 1796 conditions per place. [2024-06-27 22:34:33,103 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 254 selfloop transitions, 82 changer transitions 0/344 dead transitions. [2024-06-27 22:34:33,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 344 transitions, 5921 flow [2024-06-27 22:34:33,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:33,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:33,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:34:33,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 22:34:33,104 INFO L175 Difference]: Start difference. First operand has 252 places, 316 transitions, 4977 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:34:33,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 344 transitions, 5921 flow [2024-06-27 22:34:33,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 344 transitions, 5779 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:34:33,324 INFO L231 Difference]: Finished difference. Result has 252 places, 317 transitions, 5019 flow [2024-06-27 22:34:33,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4835, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5019, PETRI_PLACES=252, PETRI_TRANSITIONS=317} [2024-06-27 22:34:33,324 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-27 22:34:33,324 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 317 transitions, 5019 flow [2024-06-27 22:34:33,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:33,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:33,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:33,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:34:33,325 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:33,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:33,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1979988941, now seen corresponding path program 8 times [2024-06-27 22:34:33,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:33,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225047748] [2024-06-27 22:34:33,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:33,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:35,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:35,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225047748] [2024-06-27 22:34:35,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225047748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:35,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:35,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:35,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072231455] [2024-06-27 22:34:35,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:35,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:35,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:35,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:35,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:35,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:35,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 317 transitions, 5019 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:35,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:35,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:35,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:35,846 INFO L124 PetriNetUnfolderBase]: 1230/2380 cut-off events. [2024-06-27 22:34:35,846 INFO L125 PetriNetUnfolderBase]: For 65964/65964 co-relation queries the response was YES. [2024-06-27 22:34:35,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15068 conditions, 2380 events. 1230/2380 cut-off events. For 65964/65964 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14897 event pairs, 356 based on Foata normal form. 2/2257 useless extension candidates. Maximal degree in co-relation 14951. Up to 1919 conditions per place. [2024-06-27 22:34:35,871 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 251 selfloop transitions, 80 changer transitions 0/339 dead transitions. [2024-06-27 22:34:35,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 339 transitions, 5813 flow [2024-06-27 22:34:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:35,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 22:34:35,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-27 22:34:35,872 INFO L175 Difference]: Start difference. First operand has 252 places, 317 transitions, 5019 flow. Second operand 10 states and 158 transitions. [2024-06-27 22:34:35,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 339 transitions, 5813 flow [2024-06-27 22:34:36,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 339 transitions, 5583 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:36,105 INFO L231 Difference]: Finished difference. Result has 254 places, 318 transitions, 4973 flow [2024-06-27 22:34:36,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4793, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4973, PETRI_PLACES=254, PETRI_TRANSITIONS=318} [2024-06-27 22:34:36,106 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-27 22:34:36,106 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 318 transitions, 4973 flow [2024-06-27 22:34:36,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:36,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:36,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:36,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:34:36,106 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:36,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1979988786, now seen corresponding path program 5 times [2024-06-27 22:34:36,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:36,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262172725] [2024-06-27 22:34:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:37,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:37,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262172725] [2024-06-27 22:34:37,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262172725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:37,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:37,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:37,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078852403] [2024-06-27 22:34:37,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:37,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:37,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:37,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:37,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:37,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:37,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 318 transitions, 4973 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:37,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:37,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:37,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:38,208 INFO L124 PetriNetUnfolderBase]: 1236/2389 cut-off events. [2024-06-27 22:34:38,209 INFO L125 PetriNetUnfolderBase]: For 65198/65198 co-relation queries the response was YES. [2024-06-27 22:34:38,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14910 conditions, 2389 events. 1236/2389 cut-off events. For 65198/65198 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14943 event pairs, 352 based on Foata normal form. 1/2263 useless extension candidates. Maximal degree in co-relation 14793. Up to 1812 conditions per place. [2024-06-27 22:34:38,233 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 226 selfloop transitions, 111 changer transitions 0/345 dead transitions. [2024-06-27 22:34:38,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 345 transitions, 5978 flow [2024-06-27 22:34:38,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:38,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 22:34:38,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:34:38,234 INFO L175 Difference]: Start difference. First operand has 254 places, 318 transitions, 4973 flow. Second operand 10 states and 160 transitions. [2024-06-27 22:34:38,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 345 transitions, 5978 flow [2024-06-27 22:34:38,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 345 transitions, 5812 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:38,482 INFO L231 Difference]: Finished difference. Result has 257 places, 326 transitions, 5192 flow [2024-06-27 22:34:38,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4807, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5192, PETRI_PLACES=257, PETRI_TRANSITIONS=326} [2024-06-27 22:34:38,482 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-27 22:34:38,482 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 326 transitions, 5192 flow [2024-06-27 22:34:38,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:38,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:38,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:38,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:34:38,483 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:38,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:38,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1974274866, now seen corresponding path program 6 times [2024-06-27 22:34:38,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:38,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846558015] [2024-06-27 22:34:38,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:38,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:39,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:39,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846558015] [2024-06-27 22:34:39,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846558015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:39,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:39,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:39,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203850743] [2024-06-27 22:34:39,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:39,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:39,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:39,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:39,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:40,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:40,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 326 transitions, 5192 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:40,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:40,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:40,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:40,591 INFO L124 PetriNetUnfolderBase]: 1242/2391 cut-off events. [2024-06-27 22:34:40,591 INFO L125 PetriNetUnfolderBase]: For 67480/67480 co-relation queries the response was YES. [2024-06-27 22:34:40,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15140 conditions, 2391 events. 1242/2391 cut-off events. For 67480/67480 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 14905 event pairs, 342 based on Foata normal form. 1/2262 useless extension candidates. Maximal degree in co-relation 15021. Up to 1907 conditions per place. [2024-06-27 22:34:40,614 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 233 selfloop transitions, 109 changer transitions 0/350 dead transitions. [2024-06-27 22:34:40,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 350 transitions, 6105 flow [2024-06-27 22:34:40,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:40,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 22:34:40,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-27 22:34:40,615 INFO L175 Difference]: Start difference. First operand has 257 places, 326 transitions, 5192 flow. Second operand 10 states and 153 transitions. [2024-06-27 22:34:40,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 350 transitions, 6105 flow [2024-06-27 22:34:40,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 350 transitions, 5960 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:40,873 INFO L231 Difference]: Finished difference. Result has 261 places, 336 transitions, 5423 flow [2024-06-27 22:34:40,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5059, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5423, PETRI_PLACES=261, PETRI_TRANSITIONS=336} [2024-06-27 22:34:40,874 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-27 22:34:40,874 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 336 transitions, 5423 flow [2024-06-27 22:34:40,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:40,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:40,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:40,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:34:40,874 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:40,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:40,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1974476676, now seen corresponding path program 7 times [2024-06-27 22:34:40,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:40,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590801489] [2024-06-27 22:34:40,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:40,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:42,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:42,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590801489] [2024-06-27 22:34:42,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590801489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:42,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:42,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:42,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962557408] [2024-06-27 22:34:42,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:42,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:42,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:42,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:42,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:42,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:42,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 336 transitions, 5423 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:42,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:42,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:42,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:43,072 INFO L124 PetriNetUnfolderBase]: 1248/2403 cut-off events. [2024-06-27 22:34:43,072 INFO L125 PetriNetUnfolderBase]: For 69863/69863 co-relation queries the response was YES. [2024-06-27 22:34:43,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15241 conditions, 2403 events. 1248/2403 cut-off events. For 69863/69863 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 15002 event pairs, 351 based on Foata normal form. 1/2274 useless extension candidates. Maximal degree in co-relation 15121. Up to 1916 conditions per place. [2024-06-27 22:34:43,098 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 241 selfloop transitions, 107 changer transitions 0/356 dead transitions. [2024-06-27 22:34:43,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 356 transitions, 6298 flow [2024-06-27 22:34:43,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:43,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:43,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 22:34:43,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-27 22:34:43,099 INFO L175 Difference]: Start difference. First operand has 261 places, 336 transitions, 5423 flow. Second operand 10 states and 154 transitions. [2024-06-27 22:34:43,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 356 transitions, 6298 flow [2024-06-27 22:34:43,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 356 transitions, 6165 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:43,396 INFO L231 Difference]: Finished difference. Result has 266 places, 340 transitions, 5578 flow [2024-06-27 22:34:43,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5292, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5578, PETRI_PLACES=266, PETRI_TRANSITIONS=340} [2024-06-27 22:34:43,397 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 225 predicate places. [2024-06-27 22:34:43,397 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 340 transitions, 5578 flow [2024-06-27 22:34:43,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:43,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:43,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:43,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:34:43,398 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:43,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:43,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1979844636, now seen corresponding path program 8 times [2024-06-27 22:34:43,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:43,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37599529] [2024-06-27 22:34:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:43,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:44,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:44,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:44,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37599529] [2024-06-27 22:34:44,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37599529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:44,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:44,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:44,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037556423] [2024-06-27 22:34:44,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:44,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:44,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:44,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:44,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:44,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:44,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 340 transitions, 5578 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:44,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:44,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:44,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:45,504 INFO L124 PetriNetUnfolderBase]: 1262/2428 cut-off events. [2024-06-27 22:34:45,504 INFO L125 PetriNetUnfolderBase]: For 74857/74857 co-relation queries the response was YES. [2024-06-27 22:34:45,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15553 conditions, 2428 events. 1262/2428 cut-off events. For 74857/74857 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15192 event pairs, 344 based on Foata normal form. 1/2298 useless extension candidates. Maximal degree in co-relation 15432. Up to 1923 conditions per place. [2024-06-27 22:34:45,529 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 237 selfloop transitions, 118 changer transitions 0/363 dead transitions. [2024-06-27 22:34:45,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 363 transitions, 6621 flow [2024-06-27 22:34:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 22:34:45,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-27 22:34:45,530 INFO L175 Difference]: Start difference. First operand has 266 places, 340 transitions, 5578 flow. Second operand 10 states and 158 transitions. [2024-06-27 22:34:45,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 363 transitions, 6621 flow [2024-06-27 22:34:45,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 363 transitions, 6454 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:45,838 INFO L231 Difference]: Finished difference. Result has 270 places, 344 transitions, 5728 flow [2024-06-27 22:34:45,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5411, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5728, PETRI_PLACES=270, PETRI_TRANSITIONS=344} [2024-06-27 22:34:45,839 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-27 22:34:45,839 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 344 transitions, 5728 flow [2024-06-27 22:34:45,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:45,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:45,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:45,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:34:45,839 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:45,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:45,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1979844791, now seen corresponding path program 9 times [2024-06-27 22:34:45,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:45,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53418359] [2024-06-27 22:34:45,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:45,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:47,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:47,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53418359] [2024-06-27 22:34:47,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53418359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:47,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:47,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:47,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844375389] [2024-06-27 22:34:47,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:47,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:47,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:47,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:47,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:47,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:47,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 344 transitions, 5728 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:47,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:47,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:47,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:47,959 INFO L124 PetriNetUnfolderBase]: 1279/2466 cut-off events. [2024-06-27 22:34:47,959 INFO L125 PetriNetUnfolderBase]: For 79317/79317 co-relation queries the response was YES. [2024-06-27 22:34:47,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15803 conditions, 2466 events. 1279/2466 cut-off events. For 79317/79317 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 15529 event pairs, 352 based on Foata normal form. 2/2334 useless extension candidates. Maximal degree in co-relation 15681. Up to 2034 conditions per place. [2024-06-27 22:34:47,985 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 283 selfloop transitions, 74 changer transitions 0/365 dead transitions. [2024-06-27 22:34:47,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 365 transitions, 6581 flow [2024-06-27 22:34:47,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:47,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 22:34:47,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2024-06-27 22:34:47,986 INFO L175 Difference]: Start difference. First operand has 270 places, 344 transitions, 5728 flow. Second operand 9 states and 146 transitions. [2024-06-27 22:34:47,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 365 transitions, 6581 flow [2024-06-27 22:34:48,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 365 transitions, 6412 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:48,316 INFO L231 Difference]: Finished difference. Result has 274 places, 345 transitions, 5729 flow [2024-06-27 22:34:48,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5559, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5729, PETRI_PLACES=274, PETRI_TRANSITIONS=345} [2024-06-27 22:34:48,317 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-27 22:34:48,317 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 345 transitions, 5729 flow [2024-06-27 22:34:48,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:48,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:48,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:48,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:34:48,318 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:48,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:48,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1974482256, now seen corresponding path program 9 times [2024-06-27 22:34:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:48,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307929242] [2024-06-27 22:34:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:48,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:49,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:49,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:49,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307929242] [2024-06-27 22:34:49,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307929242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:49,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:49,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:49,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328445113] [2024-06-27 22:34:49,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:49,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:49,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:49,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:49,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:49,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:49,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 345 transitions, 5729 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:49,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:49,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:49,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:50,444 INFO L124 PetriNetUnfolderBase]: 1285/2473 cut-off events. [2024-06-27 22:34:50,444 INFO L125 PetriNetUnfolderBase]: For 78890/78890 co-relation queries the response was YES. [2024-06-27 22:34:50,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15988 conditions, 2473 events. 1285/2473 cut-off events. For 78890/78890 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 15562 event pairs, 351 based on Foata normal form. 1/2338 useless extension candidates. Maximal degree in co-relation 15864. Up to 1956 conditions per place. [2024-06-27 22:34:50,468 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 246 selfloop transitions, 109 changer transitions 0/363 dead transitions. [2024-06-27 22:34:50,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 363 transitions, 6587 flow [2024-06-27 22:34:50,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:50,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:50,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 22:34:50,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 22:34:50,469 INFO L175 Difference]: Start difference. First operand has 274 places, 345 transitions, 5729 flow. Second operand 10 states and 155 transitions. [2024-06-27 22:34:50,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 363 transitions, 6587 flow [2024-06-27 22:34:50,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 363 transitions, 6431 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:50,750 INFO L231 Difference]: Finished difference. Result has 277 places, 347 transitions, 5840 flow [2024-06-27 22:34:50,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5573, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5840, PETRI_PLACES=277, PETRI_TRANSITIONS=347} [2024-06-27 22:34:50,750 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-27 22:34:50,750 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 347 transitions, 5840 flow [2024-06-27 22:34:50,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:50,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:50,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:50,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:34:50,751 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:50,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1974482411, now seen corresponding path program 10 times [2024-06-27 22:34:50,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:50,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333982911] [2024-06-27 22:34:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:50,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:52,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:52,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333982911] [2024-06-27 22:34:52,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333982911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:52,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:52,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:52,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150245322] [2024-06-27 22:34:52,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:52,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:52,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:52,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:52,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:52,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:52,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 347 transitions, 5840 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:52,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:52,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:52,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:52,873 INFO L124 PetriNetUnfolderBase]: 1302/2513 cut-off events. [2024-06-27 22:34:52,874 INFO L125 PetriNetUnfolderBase]: For 83913/83913 co-relation queries the response was YES. [2024-06-27 22:34:52,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16239 conditions, 2513 events. 1302/2513 cut-off events. For 83913/83913 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15924 event pairs, 352 based on Foata normal form. 2/2377 useless extension candidates. Maximal degree in co-relation 16114. Up to 2074 conditions per place. [2024-06-27 22:34:52,899 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 291 selfloop transitions, 67 changer transitions 0/366 dead transitions. [2024-06-27 22:34:52,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 366 transitions, 6672 flow [2024-06-27 22:34:52,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:52,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:52,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-27 22:34:52,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:34:52,900 INFO L175 Difference]: Start difference. First operand has 277 places, 347 transitions, 5840 flow. Second operand 9 states and 144 transitions. [2024-06-27 22:34:52,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 366 transitions, 6672 flow [2024-06-27 22:34:53,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 366 transitions, 6429 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:53,240 INFO L231 Difference]: Finished difference. Result has 278 places, 348 transitions, 5755 flow [2024-06-27 22:34:53,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5597, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5755, PETRI_PLACES=278, PETRI_TRANSITIONS=348} [2024-06-27 22:34:53,240 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 237 predicate places. [2024-06-27 22:34:53,240 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 348 transitions, 5755 flow [2024-06-27 22:34:53,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:53,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:53,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:53,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:34:53,241 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:53,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:53,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1979839056, now seen corresponding path program 10 times [2024-06-27 22:34:53,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:53,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453584569] [2024-06-27 22:34:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:53,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:54,650 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 22:34:54,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:54,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453584569] [2024-06-27 22:34:54,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453584569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:54,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:54,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:54,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140150537] [2024-06-27 22:34:54,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:54,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:54,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:54,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:54,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:54,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:54,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 348 transitions, 5755 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:54,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:54,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:54,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:55,414 INFO L124 PetriNetUnfolderBase]: 1300/2514 cut-off events. [2024-06-27 22:34:55,414 INFO L125 PetriNetUnfolderBase]: For 80699/80699 co-relation queries the response was YES. [2024-06-27 22:34:55,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16089 conditions, 2514 events. 1300/2514 cut-off events. For 80699/80699 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15952 event pairs, 355 based on Foata normal form. 1/2377 useless extension candidates. Maximal degree in co-relation 15963. Up to 2005 conditions per place. [2024-06-27 22:34:55,441 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 239 selfloop transitions, 118 changer transitions 0/365 dead transitions. [2024-06-27 22:34:55,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 365 transitions, 6596 flow [2024-06-27 22:34:55,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:55,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:55,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 22:34:55,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 22:34:55,442 INFO L175 Difference]: Start difference. First operand has 278 places, 348 transitions, 5755 flow. Second operand 10 states and 155 transitions. [2024-06-27 22:34:55,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 365 transitions, 6596 flow [2024-06-27 22:34:55,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 365 transitions, 6445 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:55,768 INFO L231 Difference]: Finished difference. Result has 282 places, 348 transitions, 5848 flow [2024-06-27 22:34:55,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5604, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5848, PETRI_PLACES=282, PETRI_TRANSITIONS=348} [2024-06-27 22:34:55,768 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 241 predicate places. [2024-06-27 22:34:55,769 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 348 transitions, 5848 flow [2024-06-27 22:34:55,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:55,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:55,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:55,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:34:55,769 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:55,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:55,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2111025258, now seen corresponding path program 11 times [2024-06-27 22:34:55,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:55,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655195608] [2024-06-27 22:34:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:55,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:57,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:57,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655195608] [2024-06-27 22:34:57,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655195608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:57,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:57,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:57,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282259941] [2024-06-27 22:34:57,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:57,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:57,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:57,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:57,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:57,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:57,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 348 transitions, 5848 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:57,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:57,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:57,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:58,014 INFO L124 PetriNetUnfolderBase]: 1306/2516 cut-off events. [2024-06-27 22:34:58,014 INFO L125 PetriNetUnfolderBase]: For 82851/82851 co-relation queries the response was YES. [2024-06-27 22:34:58,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16177 conditions, 2516 events. 1306/2516 cut-off events. For 82851/82851 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 15922 event pairs, 339 based on Foata normal form. 1/2376 useless extension candidates. Maximal degree in co-relation 16050. Up to 2181 conditions per place. [2024-06-27 22:34:58,042 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 338 selfloop transitions, 23 changer transitions 0/369 dead transitions. [2024-06-27 22:34:58,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 369 transitions, 6773 flow [2024-06-27 22:34:58,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:58,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:58,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-27 22:34:58,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891891891891892 [2024-06-27 22:34:58,044 INFO L175 Difference]: Start difference. First operand has 282 places, 348 transitions, 5848 flow. Second operand 10 states and 144 transitions. [2024-06-27 22:34:58,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 369 transitions, 6773 flow [2024-06-27 22:34:58,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 369 transitions, 6516 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:34:58,388 INFO L231 Difference]: Finished difference. Result has 285 places, 355 transitions, 5802 flow [2024-06-27 22:34:58,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5601, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5802, PETRI_PLACES=285, PETRI_TRANSITIONS=355} [2024-06-27 22:34:58,389 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-27 22:34:58,389 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 355 transitions, 5802 flow [2024-06-27 22:34:58,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:58,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:58,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:58,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:34:58,389 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:58,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:58,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2118175098, now seen corresponding path program 12 times [2024-06-27 22:34:58,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:58,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241283336] [2024-06-27 22:34:58,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:58,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:59,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:59,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241283336] [2024-06-27 22:34:59,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241283336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:59,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:59,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:59,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112851823] [2024-06-27 22:34:59,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:59,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:59,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:59,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:59,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:59,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:34:59,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 355 transitions, 5802 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:34:59,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:59,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:34:59,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:00,568 INFO L124 PetriNetUnfolderBase]: 1312/2527 cut-off events. [2024-06-27 22:35:00,568 INFO L125 PetriNetUnfolderBase]: For 84519/84519 co-relation queries the response was YES. [2024-06-27 22:35:00,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16174 conditions, 2527 events. 1312/2527 cut-off events. For 84519/84519 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 16004 event pairs, 339 based on Foata normal form. 1/2387 useless extension candidates. Maximal degree in co-relation 16044. Up to 2144 conditions per place. [2024-06-27 22:35:00,594 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 321 selfloop transitions, 48 changer transitions 0/377 dead transitions. [2024-06-27 22:35:00,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 377 transitions, 6757 flow [2024-06-27 22:35:00,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:00,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:00,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-27 22:35:00,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 22:35:00,595 INFO L175 Difference]: Start difference. First operand has 285 places, 355 transitions, 5802 flow. Second operand 10 states and 150 transitions. [2024-06-27 22:35:00,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 377 transitions, 6757 flow [2024-06-27 22:35:00,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 377 transitions, 6700 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 22:35:00,968 INFO L231 Difference]: Finished difference. Result has 290 places, 360 transitions, 5951 flow [2024-06-27 22:35:00,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5745, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5951, PETRI_PLACES=290, PETRI_TRANSITIONS=360} [2024-06-27 22:35:00,968 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 249 predicate places. [2024-06-27 22:35:00,968 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 360 transitions, 5951 flow [2024-06-27 22:35:00,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:35:00,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:00,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:00,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:35:00,969 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:00,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:00,969 INFO L85 PathProgramCache]: Analyzing trace with hash -626127685, now seen corresponding path program 11 times [2024-06-27 22:35:00,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:00,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871320099] [2024-06-27 22:35:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:00,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:02,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:02,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:02,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871320099] [2024-06-27 22:35:02,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871320099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:02,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:02,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:02,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651310991] [2024-06-27 22:35:02,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:02,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:02,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:02,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:02,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:02,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:02,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 360 transitions, 5951 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:02,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:02,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:02,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:03,294 INFO L124 PetriNetUnfolderBase]: 1309/2521 cut-off events. [2024-06-27 22:35:03,294 INFO L125 PetriNetUnfolderBase]: For 84205/84205 co-relation queries the response was YES. [2024-06-27 22:35:03,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16057 conditions, 2521 events. 1309/2521 cut-off events. For 84205/84205 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 15934 event pairs, 343 based on Foata normal form. 2/2382 useless extension candidates. Maximal degree in co-relation 15926. Up to 2169 conditions per place. [2024-06-27 22:35:03,318 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 348 selfloop transitions, 22 changer transitions 0/378 dead transitions. [2024-06-27 22:35:03,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 378 transitions, 6791 flow [2024-06-27 22:35:03,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-27 22:35:03,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2024-06-27 22:35:03,319 INFO L175 Difference]: Start difference. First operand has 290 places, 360 transitions, 5951 flow. Second operand 9 states and 138 transitions. [2024-06-27 22:35:03,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 378 transitions, 6791 flow [2024-06-27 22:35:03,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 378 transitions, 6542 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 22:35:03,674 INFO L231 Difference]: Finished difference. Result has 290 places, 360 transitions, 5750 flow [2024-06-27 22:35:03,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5702, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5750, PETRI_PLACES=290, PETRI_TRANSITIONS=360} [2024-06-27 22:35:03,674 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 249 predicate places. [2024-06-27 22:35:03,674 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 360 transitions, 5750 flow [2024-06-27 22:35:03,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:03,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:03,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:03,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:35:03,675 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:03,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:03,675 INFO L85 PathProgramCache]: Analyzing trace with hash -626127530, now seen corresponding path program 13 times [2024-06-27 22:35:03,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:03,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140478291] [2024-06-27 22:35:03,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:03,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:05,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:05,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140478291] [2024-06-27 22:35:05,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140478291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:05,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:05,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:05,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130258096] [2024-06-27 22:35:05,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:05,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:05,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:05,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:05,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:05,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:05,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 360 transitions, 5750 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:05,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:05,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:05,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:06,032 INFO L124 PetriNetUnfolderBase]: 1315/2534 cut-off events. [2024-06-27 22:35:06,033 INFO L125 PetriNetUnfolderBase]: For 82002/82002 co-relation queries the response was YES. [2024-06-27 22:35:06,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15997 conditions, 2534 events. 1315/2534 cut-off events. For 82002/82002 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 16075 event pairs, 345 based on Foata normal form. 1/2394 useless extension candidates. Maximal degree in co-relation 15867. Up to 2137 conditions per place. [2024-06-27 22:35:06,058 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 320 selfloop transitions, 51 changer transitions 0/379 dead transitions. [2024-06-27 22:35:06,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 379 transitions, 6798 flow [2024-06-27 22:35:06,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:06,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:06,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-27 22:35:06,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42042042042042044 [2024-06-27 22:35:06,059 INFO L175 Difference]: Start difference. First operand has 290 places, 360 transitions, 5750 flow. Second operand 9 states and 140 transitions. [2024-06-27 22:35:06,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 379 transitions, 6798 flow [2024-06-27 22:35:06,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 379 transitions, 6758 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 22:35:06,395 INFO L231 Difference]: Finished difference. Result has 293 places, 362 transitions, 5869 flow [2024-06-27 22:35:06,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5710, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5869, PETRI_PLACES=293, PETRI_TRANSITIONS=362} [2024-06-27 22:35:06,396 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 252 predicate places. [2024-06-27 22:35:06,396 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 362 transitions, 5869 flow [2024-06-27 22:35:06,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:06,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:06,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:06,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:35:06,396 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:06,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:06,397 INFO L85 PathProgramCache]: Analyzing trace with hash -331260304, now seen corresponding path program 1 times [2024-06-27 22:35:06,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:06,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658306523] [2024-06-27 22:35:06,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:06,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:07,664 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 22:35:07,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:07,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658306523] [2024-06-27 22:35:07,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658306523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:07,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:07,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:07,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689602032] [2024-06-27 22:35:07,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:07,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:07,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:07,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:07,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:07,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:07,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 362 transitions, 5869 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:35:07,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:07,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:07,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:08,475 INFO L124 PetriNetUnfolderBase]: 1313/2527 cut-off events. [2024-06-27 22:35:08,475 INFO L125 PetriNetUnfolderBase]: For 81299/81299 co-relation queries the response was YES. [2024-06-27 22:35:08,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15955 conditions, 2527 events. 1313/2527 cut-off events. For 81299/81299 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 15967 event pairs, 340 based on Foata normal form. 1/2386 useless extension candidates. Maximal degree in co-relation 15824. Up to 2183 conditions per place. [2024-06-27 22:35:08,500 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 352 selfloop transitions, 20 changer transitions 0/380 dead transitions. [2024-06-27 22:35:08,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 380 transitions, 6708 flow [2024-06-27 22:35:08,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:08,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-27 22:35:08,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2024-06-27 22:35:08,501 INFO L175 Difference]: Start difference. First operand has 293 places, 362 transitions, 5869 flow. Second operand 10 states and 145 transitions. [2024-06-27 22:35:08,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 380 transitions, 6708 flow [2024-06-27 22:35:08,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 380 transitions, 6410 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:08,855 INFO L231 Difference]: Finished difference. Result has 296 places, 364 transitions, 5652 flow [2024-06-27 22:35:08,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5571, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5652, PETRI_PLACES=296, PETRI_TRANSITIONS=364} [2024-06-27 22:35:08,855 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-27 22:35:08,855 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 364 transitions, 5652 flow [2024-06-27 22:35:08,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:35:08,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:08,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:08,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:35:08,856 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:08,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:08,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1139954198, now seen corresponding path program 14 times [2024-06-27 22:35:08,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:08,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876806407] [2024-06-27 22:35:08,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:08,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:10,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:10,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:10,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876806407] [2024-06-27 22:35:10,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876806407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:10,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:10,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:10,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836675118] [2024-06-27 22:35:10,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:10,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:10,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:10,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:10,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:10,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:10,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 364 transitions, 5652 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:35:10,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:10,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:10,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:11,169 INFO L124 PetriNetUnfolderBase]: 1311/2528 cut-off events. [2024-06-27 22:35:11,169 INFO L125 PetriNetUnfolderBase]: For 79844/79844 co-relation queries the response was YES. [2024-06-27 22:35:11,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15584 conditions, 2528 events. 1311/2528 cut-off events. For 79844/79844 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 16007 event pairs, 349 based on Foata normal form. 1/2388 useless extension candidates. Maximal degree in co-relation 15453. Up to 2158 conditions per place. [2024-06-27 22:35:11,195 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 326 selfloop transitions, 46 changer transitions 0/380 dead transitions. [2024-06-27 22:35:11,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 380 transitions, 6515 flow [2024-06-27 22:35:11,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:11,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-27 22:35:11,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972972972972973 [2024-06-27 22:35:11,197 INFO L175 Difference]: Start difference. First operand has 296 places, 364 transitions, 5652 flow. Second operand 10 states and 147 transitions. [2024-06-27 22:35:11,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 380 transitions, 6515 flow [2024-06-27 22:35:11,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 380 transitions, 6429 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:11,545 INFO L231 Difference]: Finished difference. Result has 299 places, 364 transitions, 5665 flow [2024-06-27 22:35:11,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5566, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5665, PETRI_PLACES=299, PETRI_TRANSITIONS=364} [2024-06-27 22:35:11,546 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-27 22:35:11,546 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 364 transitions, 5665 flow [2024-06-27 22:35:11,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 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 22:35:11,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:11,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:11,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:35:11,546 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:11,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:11,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1316974459, now seen corresponding path program 12 times [2024-06-27 22:35:11,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:11,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934938865] [2024-06-27 22:35:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:11,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:13,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:13,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934938865] [2024-06-27 22:35:13,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934938865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:13,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:13,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:13,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983972958] [2024-06-27 22:35:13,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:13,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:13,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:13,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:13,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:13,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:13,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 364 transitions, 5665 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 22:35:13,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:13,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:13,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:13,647 INFO L124 PetriNetUnfolderBase]: 1106/2191 cut-off events. [2024-06-27 22:35:13,648 INFO L125 PetriNetUnfolderBase]: For 84048/84104 co-relation queries the response was YES. [2024-06-27 22:35:13,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13822 conditions, 2191 events. 1106/2191 cut-off events. For 84048/84104 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 14092 event pairs, 152 based on Foata normal form. 24/2091 useless extension candidates. Maximal degree in co-relation 13691. Up to 1121 conditions per place. [2024-06-27 22:35:13,673 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 271 selfloop transitions, 107 changer transitions 0/391 dead transitions. [2024-06-27 22:35:13,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 391 transitions, 6677 flow [2024-06-27 22:35:13,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:13,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:13,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:35:13,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 22:35:13,674 INFO L175 Difference]: Start difference. First operand has 299 places, 364 transitions, 5665 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:35:13,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 391 transitions, 6677 flow [2024-06-27 22:35:13,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 391 transitions, 6542 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 22:35:13,991 INFO L231 Difference]: Finished difference. Result has 299 places, 365 transitions, 5760 flow [2024-06-27 22:35:13,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5530, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5760, PETRI_PLACES=299, PETRI_TRANSITIONS=365} [2024-06-27 22:35:13,992 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-27 22:35:13,992 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 365 transitions, 5760 flow [2024-06-27 22:35:13,992 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 22:35:13,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:13,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:13,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:35:13,992 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:13,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:13,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1317064669, now seen corresponding path program 13 times [2024-06-27 22:35:13,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:13,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113618927] [2024-06-27 22:35:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:13,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:15,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:15,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113618927] [2024-06-27 22:35:15,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113618927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:15,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:15,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:15,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865824560] [2024-06-27 22:35:15,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:15,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:15,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:15,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:15,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:15,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:15,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 365 transitions, 5760 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 22:35:15,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:15,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:15,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:16,019 INFO L124 PetriNetUnfolderBase]: 1123/2284 cut-off events. [2024-06-27 22:35:16,019 INFO L125 PetriNetUnfolderBase]: For 87155/87222 co-relation queries the response was YES. [2024-06-27 22:35:16,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14376 conditions, 2284 events. 1123/2284 cut-off events. For 87155/87222 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 15074 event pairs, 280 based on Foata normal form. 29/2167 useless extension candidates. Maximal degree in co-relation 14244. Up to 1641 conditions per place. [2024-06-27 22:35:16,043 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 275 selfloop transitions, 95 changer transitions 0/383 dead transitions. [2024-06-27 22:35:16,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 383 transitions, 6568 flow [2024-06-27 22:35:16,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:35:16,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:35:16,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 22:35:16,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-27 22:35:16,044 INFO L175 Difference]: Start difference. First operand has 299 places, 365 transitions, 5760 flow. Second operand 8 states and 141 transitions. [2024-06-27 22:35:16,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 383 transitions, 6568 flow [2024-06-27 22:35:16,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 383 transitions, 6377 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:16,365 INFO L231 Difference]: Finished difference. Result has 300 places, 366 transitions, 5779 flow [2024-06-27 22:35:16,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5572, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5779, PETRI_PLACES=300, PETRI_TRANSITIONS=366} [2024-06-27 22:35:16,366 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-27 22:35:16,366 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 366 transitions, 5779 flow [2024-06-27 22:35:16,366 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 22:35:16,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:16,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:16,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:35:16,366 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:16,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:16,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1317060949, now seen corresponding path program 14 times [2024-06-27 22:35:16,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:16,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359297901] [2024-06-27 22:35:16,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:16,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:17,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:17,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359297901] [2024-06-27 22:35:17,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359297901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:17,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:17,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:17,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186912083] [2024-06-27 22:35:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:17,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:17,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:17,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:17,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 366 transitions, 5779 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 22:35:17,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:17,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:17,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:18,545 INFO L124 PetriNetUnfolderBase]: 1137/2303 cut-off events. [2024-06-27 22:35:18,546 INFO L125 PetriNetUnfolderBase]: For 87308/87375 co-relation queries the response was YES. [2024-06-27 22:35:18,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14362 conditions, 2303 events. 1137/2303 cut-off events. For 87308/87375 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15191 event pairs, 259 based on Foata normal form. 29/2189 useless extension candidates. Maximal degree in co-relation 14231. Up to 1581 conditions per place. [2024-06-27 22:35:18,569 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 277 selfloop transitions, 98 changer transitions 0/388 dead transitions. [2024-06-27 22:35:18,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 388 transitions, 6616 flow [2024-06-27 22:35:18,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:18,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:18,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:35:18,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 22:35:18,570 INFO L175 Difference]: Start difference. First operand has 300 places, 366 transitions, 5779 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:35:18,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 388 transitions, 6616 flow [2024-06-27 22:35:18,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 388 transitions, 6422 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:18,899 INFO L231 Difference]: Finished difference. Result has 302 places, 367 transitions, 5800 flow [2024-06-27 22:35:18,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5585, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5800, PETRI_PLACES=302, PETRI_TRANSITIONS=367} [2024-06-27 22:35:18,899 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-27 22:35:18,899 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 367 transitions, 5800 flow [2024-06-27 22:35:18,899 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 22:35:18,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:18,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:18,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:35:18,900 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:18,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:18,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1317064824, now seen corresponding path program 15 times [2024-06-27 22:35:18,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:18,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276646542] [2024-06-27 22:35:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:18,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:20,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:20,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276646542] [2024-06-27 22:35:20,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276646542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:20,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:20,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:20,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324856231] [2024-06-27 22:35:20,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:20,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:20,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:20,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:20,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:20,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:20,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 367 transitions, 5800 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 22:35:20,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:20,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:20,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:21,164 INFO L124 PetriNetUnfolderBase]: 1137/2317 cut-off events. [2024-06-27 22:35:21,165 INFO L125 PetriNetUnfolderBase]: For 90507/90574 co-relation queries the response was YES. [2024-06-27 22:35:21,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14609 conditions, 2317 events. 1137/2317 cut-off events. For 90507/90574 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 15395 event pairs, 293 based on Foata normal form. 17/2189 useless extension candidates. Maximal degree in co-relation 14477. Up to 1227 conditions per place. [2024-06-27 22:35:21,188 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 204 selfloop transitions, 172 changer transitions 0/389 dead transitions. [2024-06-27 22:35:21,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 389 transitions, 6964 flow [2024-06-27 22:35:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:21,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:35:21,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 22:35:21,189 INFO L175 Difference]: Start difference. First operand has 302 places, 367 transitions, 5800 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:35:21,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 389 transitions, 6964 flow [2024-06-27 22:35:21,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 389 transitions, 6760 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:21,541 INFO L231 Difference]: Finished difference. Result has 304 places, 372 transitions, 6142 flow [2024-06-27 22:35:21,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5600, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6142, PETRI_PLACES=304, PETRI_TRANSITIONS=372} [2024-06-27 22:35:21,541 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-27 22:35:21,542 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 372 transitions, 6142 flow [2024-06-27 22:35:21,542 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 22:35:21,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:21,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:21,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:35:21,542 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:21,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:21,542 INFO L85 PathProgramCache]: Analyzing trace with hash -124660454, now seen corresponding path program 16 times [2024-06-27 22:35:21,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:21,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124856464] [2024-06-27 22:35:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:21,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:22,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:22,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:22,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124856464] [2024-06-27 22:35:22,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124856464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:22,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:22,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:22,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516283131] [2024-06-27 22:35:22,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:22,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:22,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:22,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:22,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:22,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:22,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 372 transitions, 6142 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 22:35:22,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:22,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:22,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:23,606 INFO L124 PetriNetUnfolderBase]: 1141/2325 cut-off events. [2024-06-27 22:35:23,607 INFO L125 PetriNetUnfolderBase]: For 92890/92963 co-relation queries the response was YES. [2024-06-27 22:35:23,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15021 conditions, 2325 events. 1141/2325 cut-off events. For 92890/92963 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 15469 event pairs, 283 based on Foata normal form. 18/2198 useless extension candidates. Maximal degree in co-relation 14888. Up to 1703 conditions per place. [2024-06-27 22:35:23,631 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 235 selfloop transitions, 136 changer transitions 0/384 dead transitions. [2024-06-27 22:35:23,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 384 transitions, 6938 flow [2024-06-27 22:35:23,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:23,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 22:35:23,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 22:35:23,632 INFO L175 Difference]: Start difference. First operand has 304 places, 372 transitions, 6142 flow. Second operand 9 states and 148 transitions. [2024-06-27 22:35:23,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 384 transitions, 6938 flow [2024-06-27 22:35:23,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 384 transitions, 6770 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 22:35:23,991 INFO L231 Difference]: Finished difference. Result has 307 places, 374 transitions, 6291 flow [2024-06-27 22:35:23,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5978, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6291, PETRI_PLACES=307, PETRI_TRANSITIONS=374} [2024-06-27 22:35:23,991 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-06-27 22:35:23,992 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 374 transitions, 6291 flow [2024-06-27 22:35:23,992 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 22:35:23,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:23,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:23,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:35:23,992 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:23,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:23,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1403900784, now seen corresponding path program 17 times [2024-06-27 22:35:23,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:23,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652211099] [2024-06-27 22:35:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:23,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:25,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:25,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:25,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652211099] [2024-06-27 22:35:25,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652211099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:25,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:25,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:25,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707708074] [2024-06-27 22:35:25,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:25,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:25,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:25,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:25,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:25,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:25,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 374 transitions, 6291 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 22:35:25,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:25,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:25,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:25,905 INFO L124 PetriNetUnfolderBase]: 1145/2331 cut-off events. [2024-06-27 22:35:25,906 INFO L125 PetriNetUnfolderBase]: For 92377/92450 co-relation queries the response was YES. [2024-06-27 22:35:25,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15259 conditions, 2331 events. 1145/2331 cut-off events. For 92377/92450 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 15496 event pairs, 281 based on Foata normal form. 21/2206 useless extension candidates. Maximal degree in co-relation 15125. Up to 1693 conditions per place. [2024-06-27 22:35:25,936 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 234 selfloop transitions, 139 changer transitions 0/386 dead transitions. [2024-06-27 22:35:25,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 386 transitions, 7091 flow [2024-06-27 22:35:25,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:25,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 22:35:25,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 22:35:25,937 INFO L175 Difference]: Start difference. First operand has 307 places, 374 transitions, 6291 flow. Second operand 9 states and 149 transitions. [2024-06-27 22:35:25,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 386 transitions, 7091 flow [2024-06-27 22:35:26,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 386 transitions, 6812 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:26,367 INFO L231 Difference]: Finished difference. Result has 308 places, 376 transitions, 6332 flow [2024-06-27 22:35:26,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6012, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6332, PETRI_PLACES=308, PETRI_TRANSITIONS=376} [2024-06-27 22:35:26,367 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 267 predicate places. [2024-06-27 22:35:26,367 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 376 transitions, 6332 flow [2024-06-27 22:35:26,367 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 22:35:26,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:26,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:26,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:35:26,368 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:26,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:26,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1177480129, now seen corresponding path program 15 times [2024-06-27 22:35:26,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:26,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232655582] [2024-06-27 22:35:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:26,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:27,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:27,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232655582] [2024-06-27 22:35:27,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232655582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:27,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:27,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:27,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609174153] [2024-06-27 22:35:27,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:27,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:27,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:27,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:27,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:28,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:28,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 376 transitions, 6332 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 22:35:28,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:28,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:28,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:28,630 INFO L124 PetriNetUnfolderBase]: 1159/2363 cut-off events. [2024-06-27 22:35:28,631 INFO L125 PetriNetUnfolderBase]: For 97557/97630 co-relation queries the response was YES. [2024-06-27 22:35:28,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15420 conditions, 2363 events. 1159/2363 cut-off events. For 97557/97630 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15755 event pairs, 289 based on Foata normal form. 22/2236 useless extension candidates. Maximal degree in co-relation 15286. Up to 1790 conditions per place. [2024-06-27 22:35:28,657 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 294 selfloop transitions, 84 changer transitions 0/391 dead transitions. [2024-06-27 22:35:28,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 391 transitions, 7145 flow [2024-06-27 22:35:28,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:35:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:35:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 22:35:28,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 22:35:28,658 INFO L175 Difference]: Start difference. First operand has 308 places, 376 transitions, 6332 flow. Second operand 8 states and 138 transitions. [2024-06-27 22:35:28,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 391 transitions, 7145 flow [2024-06-27 22:35:29,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 391 transitions, 6856 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:29,092 INFO L231 Difference]: Finished difference. Result has 308 places, 377 transitions, 6232 flow [2024-06-27 22:35:29,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6043, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6232, PETRI_PLACES=308, PETRI_TRANSITIONS=377} [2024-06-27 22:35:29,093 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 267 predicate places. [2024-06-27 22:35:29,093 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 377 transitions, 6232 flow [2024-06-27 22:35:29,093 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 22:35:29,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:29,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:29,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 22:35:29,093 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:29,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:29,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1177627999, now seen corresponding path program 16 times [2024-06-27 22:35:29,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:29,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750299] [2024-06-27 22:35:29,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:29,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:30,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:30,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:30,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750299] [2024-06-27 22:35:30,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:30,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:30,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:30,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974110972] [2024-06-27 22:35:30,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:30,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:30,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:30,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:30,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:30,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:30,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 377 transitions, 6232 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 22:35:30,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:30,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:30,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:31,381 INFO L124 PetriNetUnfolderBase]: 1190/2437 cut-off events. [2024-06-27 22:35:31,381 INFO L125 PetriNetUnfolderBase]: For 103413/103486 co-relation queries the response was YES. [2024-06-27 22:35:31,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15828 conditions, 2437 events. 1190/2437 cut-off events. For 103413/103486 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 16485 event pairs, 281 based on Foata normal form. 22/2306 useless extension candidates. Maximal degree in co-relation 15695. Up to 1709 conditions per place. [2024-06-27 22:35:31,411 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 292 selfloop transitions, 93 changer transitions 0/398 dead transitions. [2024-06-27 22:35:31,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 398 transitions, 7250 flow [2024-06-27 22:35:31,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:35:31,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 22:35:31,412 INFO L175 Difference]: Start difference. First operand has 308 places, 377 transitions, 6232 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:35:31,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 398 transitions, 7250 flow [2024-06-27 22:35:31,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 398 transitions, 7074 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:31,838 INFO L231 Difference]: Finished difference. Result has 310 places, 379 transitions, 6282 flow [2024-06-27 22:35:31,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6058, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6282, PETRI_PLACES=310, PETRI_TRANSITIONS=379} [2024-06-27 22:35:31,839 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 269 predicate places. [2024-06-27 22:35:31,839 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 379 transitions, 6282 flow [2024-06-27 22:35:31,839 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 22:35:31,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:31,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:31,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 22:35:31,839 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:31,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:31,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1177624279, now seen corresponding path program 17 times [2024-06-27 22:35:31,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:31,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875066182] [2024-06-27 22:35:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:31,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:33,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:33,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875066182] [2024-06-27 22:35:33,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875066182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:33,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:33,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:33,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508570223] [2024-06-27 22:35:33,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:33,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:33,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:33,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:33,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:33,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:33,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 379 transitions, 6282 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:33,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:33,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:33,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:34,267 INFO L124 PetriNetUnfolderBase]: 1448/2818 cut-off events. [2024-06-27 22:35:34,267 INFO L125 PetriNetUnfolderBase]: For 99224/99226 co-relation queries the response was YES. [2024-06-27 22:35:34,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18031 conditions, 2818 events. 1448/2818 cut-off events. For 99224/99226 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 18542 event pairs, 324 based on Foata normal form. 4/2663 useless extension candidates. Maximal degree in co-relation 17897. Up to 2218 conditions per place. [2024-06-27 22:35:34,295 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 304 selfloop transitions, 89 changer transitions 0/401 dead transitions. [2024-06-27 22:35:34,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 401 transitions, 7188 flow [2024-06-27 22:35:34,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:34,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 22:35:34,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 22:35:34,296 INFO L175 Difference]: Start difference. First operand has 310 places, 379 transitions, 6282 flow. Second operand 9 states and 147 transitions. [2024-06-27 22:35:34,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 401 transitions, 7188 flow [2024-06-27 22:35:34,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 401 transitions, 7054 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:35:34,777 INFO L231 Difference]: Finished difference. Result has 313 places, 379 transitions, 6332 flow [2024-06-27 22:35:34,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6148, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6332, PETRI_PLACES=313, PETRI_TRANSITIONS=379} [2024-06-27 22:35:34,777 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-27 22:35:34,777 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 379 transitions, 6332 flow [2024-06-27 22:35:34,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:34,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:34,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:34,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 22:35:34,778 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:34,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:34,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1177624124, now seen corresponding path program 18 times [2024-06-27 22:35:34,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:34,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137704987] [2024-06-27 22:35:34,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:34,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:36,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:36,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137704987] [2024-06-27 22:35:36,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137704987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:36,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:36,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:36,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144144266] [2024-06-27 22:35:36,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:36,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:36,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:36,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:36,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:36,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:36,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 379 transitions, 6332 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 22:35:36,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:36,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:36,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:36,910 INFO L124 PetriNetUnfolderBase]: 1191/2440 cut-off events. [2024-06-27 22:35:36,910 INFO L125 PetriNetUnfolderBase]: For 95007/95080 co-relation queries the response was YES. [2024-06-27 22:35:36,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15857 conditions, 2440 events. 1191/2440 cut-off events. For 95007/95080 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 16489 event pairs, 308 based on Foata normal form. 20/2304 useless extension candidates. Maximal degree in co-relation 15722. Up to 1756 conditions per place. [2024-06-27 22:35:36,940 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 233 selfloop transitions, 145 changer transitions 0/391 dead transitions. [2024-06-27 22:35:36,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 391 transitions, 7146 flow [2024-06-27 22:35:36,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:36,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:36,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 22:35:36,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 22:35:36,941 INFO L175 Difference]: Start difference. First operand has 313 places, 379 transitions, 6332 flow. Second operand 9 states and 150 transitions. [2024-06-27 22:35:36,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 391 transitions, 7146 flow [2024-06-27 22:35:37,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 391 transitions, 6954 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 22:35:37,345 INFO L231 Difference]: Finished difference. Result has 313 places, 381 transitions, 6476 flow [2024-06-27 22:35:37,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6140, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6476, PETRI_PLACES=313, PETRI_TRANSITIONS=381} [2024-06-27 22:35:37,345 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-27 22:35:37,345 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 381 transitions, 6476 flow [2024-06-27 22:35:37,345 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 22:35:37,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:37,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:37,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 22:35:37,346 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:37,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:37,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1697737903, now seen corresponding path program 18 times [2024-06-27 22:35:37,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:37,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617541112] [2024-06-27 22:35:37,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:37,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:38,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:38,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617541112] [2024-06-27 22:35:38,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617541112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:38,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:38,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:38,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396130216] [2024-06-27 22:35:38,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:38,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:38,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:38,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:38,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:38,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:38,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 381 transitions, 6476 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 22:35:38,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:38,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:38,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:39,644 INFO L124 PetriNetUnfolderBase]: 1205/2458 cut-off events. [2024-06-27 22:35:39,644 INFO L125 PetriNetUnfolderBase]: For 98493/98563 co-relation queries the response was YES. [2024-06-27 22:35:39,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16066 conditions, 2458 events. 1205/2458 cut-off events. For 98493/98563 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 16576 event pairs, 210 based on Foata normal form. 27/2334 useless extension candidates. Maximal degree in co-relation 15931. Up to 1627 conditions per place. [2024-06-27 22:35:39,671 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 283 selfloop transitions, 111 changer transitions 0/407 dead transitions. [2024-06-27 22:35:39,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 407 transitions, 7538 flow [2024-06-27 22:35:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:35:39,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:35:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 22:35:39,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-27 22:35:39,672 INFO L175 Difference]: Start difference. First operand has 313 places, 381 transitions, 6476 flow. Second operand 8 states and 151 transitions. [2024-06-27 22:35:39,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 407 transitions, 7538 flow [2024-06-27 22:35:40,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 407 transitions, 7231 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:40,112 INFO L231 Difference]: Finished difference. Result has 313 places, 382 transitions, 6416 flow [2024-06-27 22:35:40,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6171, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6416, PETRI_PLACES=313, PETRI_TRANSITIONS=382} [2024-06-27 22:35:40,112 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-27 22:35:40,112 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 382 transitions, 6416 flow [2024-06-27 22:35:40,113 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 22:35:40,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:40,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:40,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 22:35:40,113 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:40,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:40,113 INFO L85 PathProgramCache]: Analyzing trace with hash 783455833, now seen corresponding path program 19 times [2024-06-27 22:35:40,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:40,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312607499] [2024-06-27 22:35:40,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:40,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:41,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:41,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312607499] [2024-06-27 22:35:41,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312607499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:41,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:41,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:41,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676188466] [2024-06-27 22:35:41,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:41,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:41,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:41,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:41,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:41,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:41,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 382 transitions, 6416 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 22:35:41,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:41,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:41,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:42,145 INFO L124 PetriNetUnfolderBase]: 1219/2509 cut-off events. [2024-06-27 22:35:42,145 INFO L125 PetriNetUnfolderBase]: For 98692/98762 co-relation queries the response was YES. [2024-06-27 22:35:42,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16323 conditions, 2509 events. 1219/2509 cut-off events. For 98692/98762 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17126 event pairs, 310 based on Foata normal form. 29/2376 useless extension candidates. Maximal degree in co-relation 16189. Up to 1849 conditions per place. [2024-06-27 22:35:42,171 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 286 selfloop transitions, 104 changer transitions 0/403 dead transitions. [2024-06-27 22:35:42,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 403 transitions, 7298 flow [2024-06-27 22:35:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:35:42,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:35:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:35:42,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 22:35:42,172 INFO L175 Difference]: Start difference. First operand has 313 places, 382 transitions, 6416 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:35:42,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 403 transitions, 7298 flow [2024-06-27 22:35:42,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 403 transitions, 6986 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:42,600 INFO L231 Difference]: Finished difference. Result has 313 places, 383 transitions, 6339 flow [2024-06-27 22:35:42,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6108, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6339, PETRI_PLACES=313, PETRI_TRANSITIONS=383} [2024-06-27 22:35:42,600 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-27 22:35:42,601 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 383 transitions, 6339 flow [2024-06-27 22:35:42,601 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 22:35:42,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:42,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:42,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 22:35:42,601 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:42,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:42,602 INFO L85 PathProgramCache]: Analyzing trace with hash 783455988, now seen corresponding path program 19 times [2024-06-27 22:35:42,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:42,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414318368] [2024-06-27 22:35:42,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:42,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:44,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:44,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414318368] [2024-06-27 22:35:44,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414318368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:44,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:44,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:44,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521727343] [2024-06-27 22:35:44,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:44,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:44,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:44,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:44,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:44,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:44,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 383 transitions, 6339 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 22:35:44,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:44,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:44,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:44,795 INFO L124 PetriNetUnfolderBase]: 1223/2515 cut-off events. [2024-06-27 22:35:44,795 INFO L125 PetriNetUnfolderBase]: For 94730/94800 co-relation queries the response was YES. [2024-06-27 22:35:44,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16027 conditions, 2515 events. 1223/2515 cut-off events. For 94730/94800 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 17154 event pairs, 313 based on Foata normal form. 20/2372 useless extension candidates. Maximal degree in co-relation 15894. Up to 1734 conditions per place. [2024-06-27 22:35:44,823 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 213 selfloop transitions, 177 changer transitions 0/403 dead transitions. [2024-06-27 22:35:44,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 403 transitions, 7397 flow [2024-06-27 22:35:44,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:44,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:44,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:35:44,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 22:35:44,824 INFO L175 Difference]: Start difference. First operand has 313 places, 383 transitions, 6339 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:35:44,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 403 transitions, 7397 flow [2024-06-27 22:35:45,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 403 transitions, 7179 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:45,239 INFO L231 Difference]: Finished difference. Result has 315 places, 386 transitions, 6548 flow [2024-06-27 22:35:45,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6123, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6548, PETRI_PLACES=315, PETRI_TRANSITIONS=386} [2024-06-27 22:35:45,240 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 274 predicate places. [2024-06-27 22:35:45,240 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 386 transitions, 6548 flow [2024-06-27 22:35:45,240 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 22:35:45,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:45,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:45,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 22:35:45,241 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:45,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash 789177565, now seen corresponding path program 1 times [2024-06-27 22:35:45,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:45,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601533919] [2024-06-27 22:35:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:45,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:46,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:46,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601533919] [2024-06-27 22:35:46,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601533919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:46,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:46,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:46,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14924988] [2024-06-27 22:35:46,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:46,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:46,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:46,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:46,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:46,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:46,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 386 transitions, 6548 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:46,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:46,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:46,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:47,633 INFO L124 PetriNetUnfolderBase]: 1526/2968 cut-off events. [2024-06-27 22:35:47,633 INFO L125 PetriNetUnfolderBase]: For 99788/99789 co-relation queries the response was YES. [2024-06-27 22:35:47,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18885 conditions, 2968 events. 1526/2968 cut-off events. For 99788/99789 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 19728 event pairs, 313 based on Foata normal form. 3/2794 useless extension candidates. Maximal degree in co-relation 18751. Up to 2038 conditions per place. [2024-06-27 22:35:47,667 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 259 selfloop transitions, 163 changer transitions 0/430 dead transitions. [2024-06-27 22:35:47,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 430 transitions, 7900 flow [2024-06-27 22:35:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:47,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:47,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:35:47,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:35:47,669 INFO L175 Difference]: Start difference. First operand has 315 places, 386 transitions, 6548 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:35:47,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 430 transitions, 7900 flow [2024-06-27 22:35:48,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 430 transitions, 7686 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 22:35:48,145 INFO L231 Difference]: Finished difference. Result has 320 places, 401 transitions, 6902 flow [2024-06-27 22:35:48,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6336, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6902, PETRI_PLACES=320, PETRI_TRANSITIONS=401} [2024-06-27 22:35:48,145 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-27 22:35:48,145 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 401 transitions, 6902 flow [2024-06-27 22:35:48,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:48,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:48,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:48,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 22:35:48,146 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:48,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:48,147 INFO L85 PathProgramCache]: Analyzing trace with hash 783605718, now seen corresponding path program 20 times [2024-06-27 22:35:48,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:48,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80981267] [2024-06-27 22:35:48,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:48,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:49,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:49,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80981267] [2024-06-27 22:35:49,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80981267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:49,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:49,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:49,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846811256] [2024-06-27 22:35:49,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:49,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:49,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:49,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:49,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:49,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:49,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 401 transitions, 6902 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 22:35:49,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:49,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:49,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:50,409 INFO L124 PetriNetUnfolderBase]: 1251/2574 cut-off events. [2024-06-27 22:35:50,409 INFO L125 PetriNetUnfolderBase]: For 96647/96723 co-relation queries the response was YES. [2024-06-27 22:35:50,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16872 conditions, 2574 events. 1251/2574 cut-off events. For 96647/96723 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 17672 event pairs, 332 based on Foata normal form. 13/2418 useless extension candidates. Maximal degree in co-relation 16736. Up to 1896 conditions per place. [2024-06-27 22:35:50,439 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 252 selfloop transitions, 151 changer transitions 0/416 dead transitions. [2024-06-27 22:35:50,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 416 transitions, 7803 flow [2024-06-27 22:35:50,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:50,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 22:35:50,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-27 22:35:50,440 INFO L175 Difference]: Start difference. First operand has 320 places, 401 transitions, 6902 flow. Second operand 9 states and 151 transitions. [2024-06-27 22:35:50,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 416 transitions, 7803 flow [2024-06-27 22:35:50,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 416 transitions, 7473 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:50,860 INFO L231 Difference]: Finished difference. Result has 321 places, 403 transitions, 6932 flow [2024-06-27 22:35:50,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6573, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6932, PETRI_PLACES=321, PETRI_TRANSITIONS=403} [2024-06-27 22:35:50,860 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-27 22:35:50,861 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 403 transitions, 6932 flow [2024-06-27 22:35:50,861 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 22:35:50,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:50,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:50,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 22:35:50,861 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:50,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:50,862 INFO L85 PathProgramCache]: Analyzing trace with hash 789169908, now seen corresponding path program 21 times [2024-06-27 22:35:50,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:50,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363461603] [2024-06-27 22:35:50,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:50,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:52,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:52,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363461603] [2024-06-27 22:35:52,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363461603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:52,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:52,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:52,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129484770] [2024-06-27 22:35:52,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:52,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:52,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:52,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:52,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:52,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:35:52,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 403 transitions, 6932 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 22:35:52,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:52,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:35:52,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:53,134 INFO L124 PetriNetUnfolderBase]: 1252/2565 cut-off events. [2024-06-27 22:35:53,134 INFO L125 PetriNetUnfolderBase]: For 98316/98381 co-relation queries the response was YES. [2024-06-27 22:35:53,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16657 conditions, 2565 events. 1252/2565 cut-off events. For 98316/98381 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 17545 event pairs, 310 based on Foata normal form. 14/2408 useless extension candidates. Maximal degree in co-relation 16522. Up to 1898 conditions per place. [2024-06-27 22:35:53,162 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 261 selfloop transitions, 141 changer transitions 0/415 dead transitions. [2024-06-27 22:35:53,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 415 transitions, 7806 flow [2024-06-27 22:35:53,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:53,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:53,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 22:35:53,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 22:35:53,163 INFO L175 Difference]: Start difference. First operand has 321 places, 403 transitions, 6932 flow. Second operand 9 states and 147 transitions. [2024-06-27 22:35:53,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 415 transitions, 7806 flow [2024-06-27 22:35:53,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 415 transitions, 7482 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 22:35:53,601 INFO L231 Difference]: Finished difference. Result has 321 places, 405 transitions, 6951 flow [2024-06-27 22:35:53,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6608, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6951, PETRI_PLACES=321, PETRI_TRANSITIONS=405} [2024-06-27 22:35:53,602 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-27 22:35:53,602 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 405 transitions, 6951 flow [2024-06-27 22:35:53,602 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 22:35:53,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:53,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:53,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 22:35:53,602 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:53,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:53,603 INFO L85 PathProgramCache]: Analyzing trace with hash 783599983, now seen corresponding path program 20 times [2024-06-27 22:35:53,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:53,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355272124] [2024-06-27 22:35:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:53,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:54,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:54,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355272124] [2024-06-27 22:35:54,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355272124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:54,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:54,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:54,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295825859] [2024-06-27 22:35:54,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:54,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:54,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:54,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:54,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:55,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:55,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 405 transitions, 6951 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:55,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:55,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:55,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:55,982 INFO L124 PetriNetUnfolderBase]: 1555/3034 cut-off events. [2024-06-27 22:35:55,982 INFO L125 PetriNetUnfolderBase]: For 102911/102911 co-relation queries the response was YES. [2024-06-27 22:35:56,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19438 conditions, 3034 events. 1555/3034 cut-off events. For 102911/102911 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 20327 event pairs, 360 based on Foata normal form. 2/2857 useless extension candidates. Maximal degree in co-relation 19303. Up to 2421 conditions per place. [2024-06-27 22:35:56,019 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 332 selfloop transitions, 92 changer transitions 0/432 dead transitions. [2024-06-27 22:35:56,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 432 transitions, 7986 flow [2024-06-27 22:35:56,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:35:56,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:35:56,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 22:35:56,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:35:56,020 INFO L175 Difference]: Start difference. First operand has 321 places, 405 transitions, 6951 flow. Second operand 8 states and 140 transitions. [2024-06-27 22:35:56,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 432 transitions, 7986 flow [2024-06-27 22:35:56,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 432 transitions, 7681 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:56,669 INFO L231 Difference]: Finished difference. Result has 321 places, 406 transitions, 6855 flow [2024-06-27 22:35:56,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6646, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6855, PETRI_PLACES=321, PETRI_TRANSITIONS=406} [2024-06-27 22:35:56,670 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-27 22:35:56,670 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 406 transitions, 6855 flow [2024-06-27 22:35:56,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:56,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:56,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:56,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 22:35:56,671 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:56,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:56,672 INFO L85 PathProgramCache]: Analyzing trace with hash 789170125, now seen corresponding path program 2 times [2024-06-27 22:35:56,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:56,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337482529] [2024-06-27 22:35:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:56,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:57,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:57,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337482529] [2024-06-27 22:35:57,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337482529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:57,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:57,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:57,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987817382] [2024-06-27 22:35:57,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:57,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:57,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:57,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:57,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:58,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:35:58,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 406 transitions, 6855 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:58,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:58,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:35:58,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:58,994 INFO L124 PetriNetUnfolderBase]: 1566/3043 cut-off events. [2024-06-27 22:35:58,994 INFO L125 PetriNetUnfolderBase]: For 102648/102649 co-relation queries the response was YES. [2024-06-27 22:35:59,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19451 conditions, 3043 events. 1566/3043 cut-off events. For 102648/102649 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 20322 event pairs, 316 based on Foata normal form. 3/2863 useless extension candidates. Maximal degree in co-relation 19317. Up to 2097 conditions per place. [2024-06-27 22:35:59,026 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 270 selfloop transitions, 160 changer transitions 0/438 dead transitions. [2024-06-27 22:35:59,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 438 transitions, 8061 flow [2024-06-27 22:35:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:35:59,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 22:35:59,027 INFO L175 Difference]: Start difference. First operand has 321 places, 406 transitions, 6855 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:35:59,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 438 transitions, 8061 flow [2024-06-27 22:35:59,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 438 transitions, 7865 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:59,474 INFO L231 Difference]: Finished difference. Result has 324 places, 408 transitions, 7014 flow [2024-06-27 22:35:59,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6661, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7014, PETRI_PLACES=324, PETRI_TRANSITIONS=408} [2024-06-27 22:35:59,475 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 283 predicate places. [2024-06-27 22:35:59,475 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 408 transitions, 7014 flow [2024-06-27 22:35:59,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:59,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:59,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:59,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 22:35:59,475 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:59,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:59,476 INFO L85 PathProgramCache]: Analyzing trace with hash 788968098, now seen corresponding path program 22 times [2024-06-27 22:35:59,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:59,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755822718] [2024-06-27 22:35:59,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:59,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:00,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:00,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755822718] [2024-06-27 22:36:00,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755822718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:00,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:00,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:00,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328037447] [2024-06-27 22:36:00,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:00,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:00,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:00,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:00,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:01,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:36:01,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 408 transitions, 7014 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 22:36:01,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:01,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:36:01,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:01,821 INFO L124 PetriNetUnfolderBase]: 1280/2620 cut-off events. [2024-06-27 22:36:01,821 INFO L125 PetriNetUnfolderBase]: For 99625/99698 co-relation queries the response was YES. [2024-06-27 22:36:01,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17062 conditions, 2620 events. 1280/2620 cut-off events. For 99625/99698 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 18003 event pairs, 316 based on Foata normal form. 15/2458 useless extension candidates. Maximal degree in co-relation 16927. Up to 1945 conditions per place. [2024-06-27 22:36:01,850 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 271 selfloop transitions, 136 changer transitions 0/420 dead transitions. [2024-06-27 22:36:01,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 420 transitions, 7902 flow [2024-06-27 22:36:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:36:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:36:01,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 22:36:01,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 22:36:01,852 INFO L175 Difference]: Start difference. First operand has 324 places, 408 transitions, 7014 flow. Second operand 9 states and 148 transitions. [2024-06-27 22:36:01,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 420 transitions, 7902 flow [2024-06-27 22:36:02,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 420 transitions, 7624 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:02,293 INFO L231 Difference]: Finished difference. Result has 326 places, 410 transitions, 7073 flow [2024-06-27 22:36:02,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6736, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7073, PETRI_PLACES=326, PETRI_TRANSITIONS=410} [2024-06-27 22:36:02,293 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-27 22:36:02,293 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 410 transitions, 7073 flow [2024-06-27 22:36:02,293 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 22:36:02,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:02,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:02,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 22:36:02,293 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:02,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:02,294 INFO L85 PathProgramCache]: Analyzing trace with hash 788962518, now seen corresponding path program 23 times [2024-06-27 22:36:02,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:02,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588240292] [2024-06-27 22:36:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:02,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:03,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:03,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588240292] [2024-06-27 22:36:03,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588240292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:03,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:03,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:03,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331548527] [2024-06-27 22:36:03,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:03,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:03,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:03,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:03,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:03,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:36:03,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 410 transitions, 7073 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 22:36:03,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:03,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:36:03,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:04,517 INFO L124 PetriNetUnfolderBase]: 1308/2666 cut-off events. [2024-06-27 22:36:04,517 INFO L125 PetriNetUnfolderBase]: For 114470/114543 co-relation queries the response was YES. [2024-06-27 22:36:04,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17616 conditions, 2666 events. 1308/2666 cut-off events. For 114470/114543 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 18293 event pairs, 314 based on Foata normal form. 18/2505 useless extension candidates. Maximal degree in co-relation 17480. Up to 1694 conditions per place. [2024-06-27 22:36:04,547 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 240 selfloop transitions, 180 changer transitions 0/433 dead transitions. [2024-06-27 22:36:04,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 433 transitions, 8554 flow [2024-06-27 22:36:04,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:36:04,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:36:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 22:36:04,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-27 22:36:04,548 INFO L175 Difference]: Start difference. First operand has 326 places, 410 transitions, 7073 flow. Second operand 8 states and 151 transitions. [2024-06-27 22:36:04,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 433 transitions, 8554 flow [2024-06-27 22:36:04,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 433 transitions, 8249 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:04,997 INFO L231 Difference]: Finished difference. Result has 327 places, 416 transitions, 7308 flow [2024-06-27 22:36:04,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6774, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7308, PETRI_PLACES=327, PETRI_TRANSITIONS=416} [2024-06-27 22:36:04,998 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-27 22:36:04,998 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 416 transitions, 7308 flow [2024-06-27 22:36:04,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:04,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:04,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:04,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 22:36:04,998 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:04,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:04,999 INFO L85 PathProgramCache]: Analyzing trace with hash 788968315, now seen corresponding path program 3 times [2024-06-27 22:36:04,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:04,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013916813] [2024-06-27 22:36:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:04,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:06,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:06,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013916813] [2024-06-27 22:36:06,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013916813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:06,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:06,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:06,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613926327] [2024-06-27 22:36:06,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:06,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:06,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:06,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:06,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:06,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:06,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 416 transitions, 7308 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:06,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:06,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:06,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:07,340 INFO L124 PetriNetUnfolderBase]: 1606/3103 cut-off events. [2024-06-27 22:36:07,340 INFO L125 PetriNetUnfolderBase]: For 114515/114516 co-relation queries the response was YES. [2024-06-27 22:36:07,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20479 conditions, 3103 events. 1606/3103 cut-off events. For 114515/114516 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 20704 event pairs, 316 based on Foata normal form. 3/2917 useless extension candidates. Maximal degree in co-relation 20343. Up to 2150 conditions per place. [2024-06-27 22:36:07,378 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 279 selfloop transitions, 159 changer transitions 0/446 dead transitions. [2024-06-27 22:36:07,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 446 transitions, 8511 flow [2024-06-27 22:36:07,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:07,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:07,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:36:07,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:36:07,379 INFO L175 Difference]: Start difference. First operand has 327 places, 416 transitions, 7308 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:36:07,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 446 transitions, 8511 flow [2024-06-27 22:36:07,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 446 transitions, 8285 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 22:36:07,915 INFO L231 Difference]: Finished difference. Result has 333 places, 416 transitions, 7410 flow [2024-06-27 22:36:07,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7084, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7410, PETRI_PLACES=333, PETRI_TRANSITIONS=416} [2024-06-27 22:36:07,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-27 22:36:07,915 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 416 transitions, 7410 flow [2024-06-27 22:36:07,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:07,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:07,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:07,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 22:36:07,916 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:07,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:07,916 INFO L85 PathProgramCache]: Analyzing trace with hash 788962363, now seen corresponding path program 21 times [2024-06-27 22:36:07,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:07,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112084413] [2024-06-27 22:36:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:07,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:09,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:09,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112084413] [2024-06-27 22:36:09,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112084413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:09,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:09,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:09,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059404356] [2024-06-27 22:36:09,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:09,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:09,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:09,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:09,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:09,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:09,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 416 transitions, 7410 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:09,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:09,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:09,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:10,496 INFO L124 PetriNetUnfolderBase]: 1603/3099 cut-off events. [2024-06-27 22:36:10,496 INFO L125 PetriNetUnfolderBase]: For 109247/109248 co-relation queries the response was YES. [2024-06-27 22:36:10,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20348 conditions, 3099 events. 1603/3099 cut-off events. For 109247/109248 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 20696 event pairs, 338 based on Foata normal form. 3/2915 useless extension candidates. Maximal degree in co-relation 20211. Up to 2493 conditions per place. [2024-06-27 22:36:10,533 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 349 selfloop transitions, 81 changer transitions 0/438 dead transitions. [2024-06-27 22:36:10,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 438 transitions, 8394 flow [2024-06-27 22:36:10,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:36:10,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:36:10,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 22:36:10,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:36:10,534 INFO L175 Difference]: Start difference. First operand has 333 places, 416 transitions, 7410 flow. Second operand 8 states and 136 transitions. [2024-06-27 22:36:10,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 438 transitions, 8394 flow [2024-06-27 22:36:11,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 438 transitions, 7988 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:11,069 INFO L231 Difference]: Finished difference. Result has 333 places, 416 transitions, 7176 flow [2024-06-27 22:36:11,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7008, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7176, PETRI_PLACES=333, PETRI_TRANSITIONS=416} [2024-06-27 22:36:11,069 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-27 22:36:11,070 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 416 transitions, 7176 flow [2024-06-27 22:36:11,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:11,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:11,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:11,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 22:36:11,070 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:11,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:11,070 INFO L85 PathProgramCache]: Analyzing trace with hash 783600138, now seen corresponding path program 24 times [2024-06-27 22:36:11,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:11,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348475492] [2024-06-27 22:36:11,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:11,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:12,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:12,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348475492] [2024-06-27 22:36:12,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348475492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:12,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:12,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:12,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702002042] [2024-06-27 22:36:12,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:12,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:12,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:12,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:12,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:12,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:36:12,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 416 transitions, 7176 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 22:36:12,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:12,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:36:12,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:13,325 INFO L124 PetriNetUnfolderBase]: 1312/2687 cut-off events. [2024-06-27 22:36:13,325 INFO L125 PetriNetUnfolderBase]: For 107459/107535 co-relation queries the response was YES. [2024-06-27 22:36:13,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17521 conditions, 2687 events. 1312/2687 cut-off events. For 107459/107535 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 18562 event pairs, 328 based on Foata normal form. 32/2542 useless extension candidates. Maximal degree in co-relation 17384. Up to 1732 conditions per place. [2024-06-27 22:36:13,356 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 231 selfloop transitions, 194 changer transitions 0/438 dead transitions. [2024-06-27 22:36:13,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 438 transitions, 8468 flow [2024-06-27 22:36:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:36:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:36:13,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 22:36:13,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-06-27 22:36:13,357 INFO L175 Difference]: Start difference. First operand has 333 places, 416 transitions, 7176 flow. Second operand 8 states and 154 transitions. [2024-06-27 22:36:13,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 438 transitions, 8468 flow [2024-06-27 22:36:13,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 438 transitions, 8179 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:13,843 INFO L231 Difference]: Finished difference. Result has 333 places, 418 transitions, 7357 flow [2024-06-27 22:36:13,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6891, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7357, PETRI_PLACES=333, PETRI_TRANSITIONS=418} [2024-06-27 22:36:13,843 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-27 22:36:13,843 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 418 transitions, 7357 flow [2024-06-27 22:36:13,843 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 22:36:13,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:13,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:13,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 22:36:13,844 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:13,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:13,844 INFO L85 PathProgramCache]: Analyzing trace with hash 783605935, now seen corresponding path program 4 times [2024-06-27 22:36:13,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:13,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827081771] [2024-06-27 22:36:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:13,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:15,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:15,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:15,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827081771] [2024-06-27 22:36:15,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827081771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:15,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:15,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:36:15,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641438822] [2024-06-27 22:36:15,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:15,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:36:15,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:36:15,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:36:15,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:15,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 418 transitions, 7357 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:15,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:15,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:15,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:16,159 INFO L124 PetriNetUnfolderBase]: 1635/3148 cut-off events. [2024-06-27 22:36:16,159 INFO L125 PetriNetUnfolderBase]: For 106834/106835 co-relation queries the response was YES. [2024-06-27 22:36:16,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20530 conditions, 3148 events. 1635/3148 cut-off events. For 106834/106835 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 21017 event pairs, 325 based on Foata normal form. 3/2952 useless extension candidates. Maximal degree in co-relation 20392. Up to 2192 conditions per place. [2024-06-27 22:36:16,190 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 266 selfloop transitions, 189 changer transitions 0/463 dead transitions. [2024-06-27 22:36:16,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 463 transitions, 8696 flow [2024-06-27 22:36:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:16,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:16,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:36:16,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:36:16,191 INFO L175 Difference]: Start difference. First operand has 333 places, 418 transitions, 7357 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:36:16,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 463 transitions, 8696 flow [2024-06-27 22:36:16,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 463 transitions, 8208 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 22:36:16,621 INFO L231 Difference]: Finished difference. Result has 338 places, 438 transitions, 7683 flow [2024-06-27 22:36:16,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6906, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7683, PETRI_PLACES=338, PETRI_TRANSITIONS=438} [2024-06-27 22:36:16,621 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 297 predicate places. [2024-06-27 22:36:16,621 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 438 transitions, 7683 flow [2024-06-27 22:36:16,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:16,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:16,622 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 22:36:16,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 22:36:16,622 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:16,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:16,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1315825551, now seen corresponding path program 1 times [2024-06-27 22:36:16,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:16,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173235384] [2024-06-27 22:36:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:16,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:18,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:18,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173235384] [2024-06-27 22:36:18,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173235384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:18,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:18,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:18,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674542731] [2024-06-27 22:36:18,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:18,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:18,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:18,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:18,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:18,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:18,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 438 transitions, 7683 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:36:18,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:18,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:18,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:19,326 INFO L124 PetriNetUnfolderBase]: 1672/3194 cut-off events. [2024-06-27 22:36:19,326 INFO L125 PetriNetUnfolderBase]: For 113595/113595 co-relation queries the response was YES. [2024-06-27 22:36:19,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20958 conditions, 3194 events. 1672/3194 cut-off events. For 113595/113595 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 21312 event pairs, 445 based on Foata normal form. 2/3004 useless extension candidates. Maximal degree in co-relation 20818. Up to 1839 conditions per place. [2024-06-27 22:36:19,364 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 337 selfloop transitions, 130 changer transitions 0/475 dead transitions. [2024-06-27 22:36:19,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 475 transitions, 8941 flow [2024-06-27 22:36:19,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:19,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:36:19,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:36:19,367 INFO L175 Difference]: Start difference. First operand has 338 places, 438 transitions, 7683 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:36:19,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 475 transitions, 8941 flow [2024-06-27 22:36:19,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 475 transitions, 8710 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:19,935 INFO L231 Difference]: Finished difference. Result has 342 places, 440 transitions, 7734 flow [2024-06-27 22:36:19,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7452, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7734, PETRI_PLACES=342, PETRI_TRANSITIONS=440} [2024-06-27 22:36:19,935 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 301 predicate places. [2024-06-27 22:36:19,935 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 440 transitions, 7734 flow [2024-06-27 22:36:19,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:36:19,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:19,935 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 22:36:19,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 22:36:19,935 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:19,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:19,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1231627287, now seen corresponding path program 2 times [2024-06-27 22:36:19,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:19,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722786698] [2024-06-27 22:36:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:19,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:21,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:21,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722786698] [2024-06-27 22:36:21,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722786698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:21,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:21,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:21,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845224011] [2024-06-27 22:36:21,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:21,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:21,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:21,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:21,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:21,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:21,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 440 transitions, 7734 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:21,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:21,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:21,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:22,634 INFO L124 PetriNetUnfolderBase]: 1726/3340 cut-off events. [2024-06-27 22:36:22,635 INFO L125 PetriNetUnfolderBase]: For 129539/129539 co-relation queries the response was YES. [2024-06-27 22:36:22,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21882 conditions, 3340 events. 1726/3340 cut-off events. For 129539/129539 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 22679 event pairs, 489 based on Foata normal form. 2/3131 useless extension candidates. Maximal degree in co-relation 21741. Up to 2395 conditions per place. [2024-06-27 22:36:22,677 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 334 selfloop transitions, 137 changer transitions 0/479 dead transitions. [2024-06-27 22:36:22,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 479 transitions, 9229 flow [2024-06-27 22:36:22,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:36:22,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-27 22:36:22,678 INFO L175 Difference]: Start difference. First operand has 342 places, 440 transitions, 7734 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:36:22,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 479 transitions, 9229 flow [2024-06-27 22:36:23,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 479 transitions, 9038 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:23,369 INFO L231 Difference]: Finished difference. Result has 346 places, 444 transitions, 7979 flow [2024-06-27 22:36:23,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7547, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7979, PETRI_PLACES=346, PETRI_TRANSITIONS=444} [2024-06-27 22:36:23,369 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 305 predicate places. [2024-06-27 22:36:23,369 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 444 transitions, 7979 flow [2024-06-27 22:36:23,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:23,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:23,370 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 22:36:23,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 22:36:23,370 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:23,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:23,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1374037971, now seen corresponding path program 3 times [2024-06-27 22:36:23,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:23,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549550337] [2024-06-27 22:36:23,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:23,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:25,135 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 22:36:25,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:25,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549550337] [2024-06-27 22:36:25,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549550337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:25,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:25,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:25,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151615257] [2024-06-27 22:36:25,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:25,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:25,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:25,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:25,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:25,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:25,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 444 transitions, 7979 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:25,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:25,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:25,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:26,172 INFO L124 PetriNetUnfolderBase]: 1743/3381 cut-off events. [2024-06-27 22:36:26,173 INFO L125 PetriNetUnfolderBase]: For 133585/133585 co-relation queries the response was YES. [2024-06-27 22:36:26,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22448 conditions, 3381 events. 1743/3381 cut-off events. For 133585/133585 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 23050 event pairs, 532 based on Foata normal form. 2/3170 useless extension candidates. Maximal degree in co-relation 22304. Up to 2578 conditions per place. [2024-06-27 22:36:26,214 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 329 selfloop transitions, 129 changer transitions 0/466 dead transitions. [2024-06-27 22:36:26,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 466 transitions, 8989 flow [2024-06-27 22:36:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:26,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:36:26,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-27 22:36:26,215 INFO L175 Difference]: Start difference. First operand has 346 places, 444 transitions, 7979 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:36:26,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 466 transitions, 8989 flow [2024-06-27 22:36:26,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 466 transitions, 8881 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 22:36:26,922 INFO L231 Difference]: Finished difference. Result has 351 places, 445 transitions, 8145 flow [2024-06-27 22:36:26,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7871, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8145, PETRI_PLACES=351, PETRI_TRANSITIONS=445} [2024-06-27 22:36:26,923 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 310 predicate places. [2024-06-27 22:36:26,923 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 445 transitions, 8145 flow [2024-06-27 22:36:26,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:26,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:26,924 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 22:36:26,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 22:36:26,924 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:26,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:26,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1231747443, now seen corresponding path program 1 times [2024-06-27 22:36:26,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:26,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247451267] [2024-06-27 22:36:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:26,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:28,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:28,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247451267] [2024-06-27 22:36:28,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247451267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:28,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:28,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:28,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317892060] [2024-06-27 22:36:28,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:28,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:28,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:28,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:28,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:28,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:28,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 445 transitions, 8145 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:36:28,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:28,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:28,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:29,709 INFO L124 PetriNetUnfolderBase]: 1773/3427 cut-off events. [2024-06-27 22:36:29,710 INFO L125 PetriNetUnfolderBase]: For 143302/143302 co-relation queries the response was YES. [2024-06-27 22:36:29,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23206 conditions, 3427 events. 1773/3427 cut-off events. For 143302/143302 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 23347 event pairs, 538 based on Foata normal form. 2/3210 useless extension candidates. Maximal degree in co-relation 23060. Up to 2533 conditions per place. [2024-06-27 22:36:29,752 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 338 selfloop transitions, 130 changer transitions 0/476 dead transitions. [2024-06-27 22:36:29,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 476 transitions, 9604 flow [2024-06-27 22:36:29,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:29,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 22:36:29,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 22:36:29,753 INFO L175 Difference]: Start difference. First operand has 351 places, 445 transitions, 8145 flow. Second operand 11 states and 177 transitions. [2024-06-27 22:36:29,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 476 transitions, 9604 flow [2024-06-27 22:36:30,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 476 transitions, 9346 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:30,405 INFO L231 Difference]: Finished difference. Result has 355 places, 451 transitions, 8325 flow [2024-06-27 22:36:30,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7887, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8325, PETRI_PLACES=355, PETRI_TRANSITIONS=451} [2024-06-27 22:36:30,405 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 314 predicate places. [2024-06-27 22:36:30,405 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 451 transitions, 8325 flow [2024-06-27 22:36:30,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:36:30,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:30,406 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 22:36:30,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 22:36:30,406 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:30,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:30,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1231742607, now seen corresponding path program 4 times [2024-06-27 22:36:30,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:30,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060791413] [2024-06-27 22:36:30,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:30,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:32,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:32,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:32,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060791413] [2024-06-27 22:36:32,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060791413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:32,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:32,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:32,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47767612] [2024-06-27 22:36:32,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:32,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:32,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:32,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:32,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:32,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:32,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 451 transitions, 8325 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:32,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:32,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:32,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:33,389 INFO L124 PetriNetUnfolderBase]: 1779/3433 cut-off events. [2024-06-27 22:36:33,389 INFO L125 PetriNetUnfolderBase]: For 143712/143712 co-relation queries the response was YES. [2024-06-27 22:36:33,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23503 conditions, 3433 events. 1779/3433 cut-off events. For 143712/143712 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 23348 event pairs, 528 based on Foata normal form. 2/3216 useless extension candidates. Maximal degree in co-relation 23355. Up to 2522 conditions per place. [2024-06-27 22:36:33,431 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 327 selfloop transitions, 146 changer transitions 0/481 dead transitions. [2024-06-27 22:36:33,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 481 transitions, 9611 flow [2024-06-27 22:36:33,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:33,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:36:33,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:36:33,432 INFO L175 Difference]: Start difference. First operand has 355 places, 451 transitions, 8325 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:36:33,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 481 transitions, 9611 flow [2024-06-27 22:36:34,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 481 transitions, 9569 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 22:36:34,300 INFO L231 Difference]: Finished difference. Result has 360 places, 453 transitions, 8724 flow [2024-06-27 22:36:34,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8283, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8724, PETRI_PLACES=360, PETRI_TRANSITIONS=453} [2024-06-27 22:36:34,300 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 319 predicate places. [2024-06-27 22:36:34,300 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 453 transitions, 8724 flow [2024-06-27 22:36:34,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:34,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:34,300 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 22:36:34,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 22:36:34,301 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:34,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:34,301 INFO L85 PathProgramCache]: Analyzing trace with hash -228834889, now seen corresponding path program 2 times [2024-06-27 22:36:34,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:34,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834114186] [2024-06-27 22:36:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:34,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:35,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:35,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834114186] [2024-06-27 22:36:35,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834114186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:35,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:35,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:35,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820003593] [2024-06-27 22:36:35,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:35,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:35,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:35,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:35,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:35,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:35,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 453 transitions, 8724 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:35,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:35,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:35,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:37,077 INFO L124 PetriNetUnfolderBase]: 1792/3460 cut-off events. [2024-06-27 22:36:37,077 INFO L125 PetriNetUnfolderBase]: For 150374/150374 co-relation queries the response was YES. [2024-06-27 22:36:37,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24277 conditions, 3460 events. 1792/3460 cut-off events. For 150374/150374 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 23578 event pairs, 526 based on Foata normal form. 2/3240 useless extension candidates. Maximal degree in co-relation 24126. Up to 2581 conditions per place. [2024-06-27 22:36:37,121 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 307 selfloop transitions, 159 changer transitions 0/474 dead transitions. [2024-06-27 22:36:37,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 474 transitions, 9840 flow [2024-06-27 22:36:37,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:37,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:37,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 22:36:37,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-27 22:36:37,122 INFO L175 Difference]: Start difference. First operand has 360 places, 453 transitions, 8724 flow. Second operand 11 states and 173 transitions. [2024-06-27 22:36:37,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 474 transitions, 9840 flow [2024-06-27 22:36:37,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 474 transitions, 9625 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:37,908 INFO L231 Difference]: Finished difference. Result has 363 places, 455 transitions, 8893 flow [2024-06-27 22:36:37,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8513, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8893, PETRI_PLACES=363, PETRI_TRANSITIONS=455} [2024-06-27 22:36:37,909 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 322 predicate places. [2024-06-27 22:36:37,909 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 455 transitions, 8893 flow [2024-06-27 22:36:37,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:37,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:37,909 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 22:36:37,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 22:36:37,909 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:37,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash -371132113, now seen corresponding path program 3 times [2024-06-27 22:36:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:37,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550377705] [2024-06-27 22:36:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:37,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:39,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:39,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550377705] [2024-06-27 22:36:39,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550377705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:39,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:39,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:39,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983566914] [2024-06-27 22:36:39,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:39,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:39,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:39,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:39,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:39,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:39,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 455 transitions, 8893 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:36:39,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:39,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:39,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:40,798 INFO L124 PetriNetUnfolderBase]: 1805/3481 cut-off events. [2024-06-27 22:36:40,798 INFO L125 PetriNetUnfolderBase]: For 153557/153557 co-relation queries the response was YES. [2024-06-27 22:36:40,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24496 conditions, 3481 events. 1805/3481 cut-off events. For 153557/153557 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 23741 event pairs, 543 based on Foata normal form. 2/3259 useless extension candidates. Maximal degree in co-relation 24344. Up to 2801 conditions per place. [2024-06-27 22:36:40,844 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 348 selfloop transitions, 123 changer transitions 0/479 dead transitions. [2024-06-27 22:36:40,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 479 transitions, 10186 flow [2024-06-27 22:36:40,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:40,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 22:36:40,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-27 22:36:40,845 INFO L175 Difference]: Start difference. First operand has 363 places, 455 transitions, 8893 flow. Second operand 11 states and 173 transitions. [2024-06-27 22:36:40,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 479 transitions, 10186 flow [2024-06-27 22:36:41,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 479 transitions, 9814 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:41,629 INFO L231 Difference]: Finished difference. Result has 365 places, 457 transitions, 8804 flow [2024-06-27 22:36:41,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8521, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8804, PETRI_PLACES=365, PETRI_TRANSITIONS=457} [2024-06-27 22:36:41,630 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-27 22:36:41,630 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 457 transitions, 8804 flow [2024-06-27 22:36:41,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:36:41,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:41,630 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 22:36:41,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 22:36:41,630 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:41,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:41,631 INFO L85 PathProgramCache]: Analyzing trace with hash -371132299, now seen corresponding path program 5 times [2024-06-27 22:36:41,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:41,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278199463] [2024-06-27 22:36:41,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:41,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:43,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:43,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278199463] [2024-06-27 22:36:43,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278199463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:43,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:43,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:43,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126949373] [2024-06-27 22:36:43,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:43,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:43,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:43,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:43,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:43,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:43,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 457 transitions, 8804 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:36:43,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:43,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:43,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:44,482 INFO L124 PetriNetUnfolderBase]: 1822/3520 cut-off events. [2024-06-27 22:36:44,482 INFO L125 PetriNetUnfolderBase]: For 154882/154882 co-relation queries the response was YES. [2024-06-27 22:36:44,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24434 conditions, 3520 events. 1822/3520 cut-off events. For 154882/154882 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 24112 event pairs, 558 based on Foata normal form. 2/3297 useless extension candidates. Maximal degree in co-relation 24281. Up to 2853 conditions per place. [2024-06-27 22:36:44,521 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 357 selfloop transitions, 113 changer transitions 0/478 dead transitions. [2024-06-27 22:36:44,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 478 transitions, 9880 flow [2024-06-27 22:36:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:44,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:44,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 22:36:44,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-27 22:36:44,522 INFO L175 Difference]: Start difference. First operand has 365 places, 457 transitions, 8804 flow. Second operand 11 states and 170 transitions. [2024-06-27 22:36:44,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 478 transitions, 9880 flow [2024-06-27 22:36:45,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 478 transitions, 9626 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:45,283 INFO L231 Difference]: Finished difference. Result has 367 places, 458 transitions, 8792 flow [2024-06-27 22:36:45,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8550, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8792, PETRI_PLACES=367, PETRI_TRANSITIONS=458} [2024-06-27 22:36:45,283 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 326 predicate places. [2024-06-27 22:36:45,283 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 458 transitions, 8792 flow [2024-06-27 22:36:45,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:36:45,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:45,283 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 22:36:45,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 22:36:45,283 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:45,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:45,284 INFO L85 PathProgramCache]: Analyzing trace with hash -371309929, now seen corresponding path program 6 times [2024-06-27 22:36:45,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:45,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695634302] [2024-06-27 22:36:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:45,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:46,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:46,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695634302] [2024-06-27 22:36:46,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695634302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:46,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:46,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:46,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680570528] [2024-06-27 22:36:46,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:46,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:46,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:46,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:46,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:46,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:46,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 458 transitions, 8792 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:46,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:46,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:46,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:48,063 INFO L124 PetriNetUnfolderBase]: 1859/3601 cut-off events. [2024-06-27 22:36:48,063 INFO L125 PetriNetUnfolderBase]: For 165447/165447 co-relation queries the response was YES. [2024-06-27 22:36:48,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24953 conditions, 3601 events. 1859/3601 cut-off events. For 165447/165447 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24882 event pairs, 548 based on Foata normal form. 2/3373 useless extension candidates. Maximal degree in co-relation 24799. Up to 2831 conditions per place. [2024-06-27 22:36:48,111 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 363 selfloop transitions, 115 changer transitions 0/486 dead transitions. [2024-06-27 22:36:48,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 486 transitions, 10100 flow [2024-06-27 22:36:48,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:36:48,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:36:48,112 INFO L175 Difference]: Start difference. First operand has 367 places, 458 transitions, 8792 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:36:48,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 486 transitions, 10100 flow [2024-06-27 22:36:48,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 486 transitions, 9872 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:48,978 INFO L231 Difference]: Finished difference. Result has 368 places, 460 transitions, 8824 flow [2024-06-27 22:36:48,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8564, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8824, PETRI_PLACES=368, PETRI_TRANSITIONS=460} [2024-06-27 22:36:48,978 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-27 22:36:48,978 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 460 transitions, 8824 flow [2024-06-27 22:36:48,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:48,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:48,978 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 22:36:48,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 22:36:48,978 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:48,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:48,979 INFO L85 PathProgramCache]: Analyzing trace with hash -371305093, now seen corresponding path program 4 times [2024-06-27 22:36:48,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:48,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230030910] [2024-06-27 22:36:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:48,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:50,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:50,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230030910] [2024-06-27 22:36:50,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230030910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:50,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:50,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:50,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029693873] [2024-06-27 22:36:50,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:50,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:50,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:50,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:50,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:50,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:50,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 460 transitions, 8824 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:50,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:50,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:50,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:51,760 INFO L124 PetriNetUnfolderBase]: 1872/3622 cut-off events. [2024-06-27 22:36:51,761 INFO L125 PetriNetUnfolderBase]: For 169325/169325 co-relation queries the response was YES. [2024-06-27 22:36:51,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25171 conditions, 3622 events. 1872/3622 cut-off events. For 169325/169325 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 24985 event pairs, 548 based on Foata normal form. 2/3388 useless extension candidates. Maximal degree in co-relation 25016. Up to 2660 conditions per place. [2024-06-27 22:36:51,809 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 314 selfloop transitions, 164 changer transitions 0/486 dead transitions. [2024-06-27 22:36:51,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 486 transitions, 10144 flow [2024-06-27 22:36:51,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:51,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:51,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 22:36:51,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 22:36:51,810 INFO L175 Difference]: Start difference. First operand has 368 places, 460 transitions, 8824 flow. Second operand 11 states and 178 transitions. [2024-06-27 22:36:51,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 486 transitions, 10144 flow [2024-06-27 22:36:52,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 486 transitions, 10075 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:36:52,677 INFO L231 Difference]: Finished difference. Result has 374 places, 462 transitions, 9124 flow [2024-06-27 22:36:52,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8755, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9124, PETRI_PLACES=374, PETRI_TRANSITIONS=462} [2024-06-27 22:36:52,677 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 333 predicate places. [2024-06-27 22:36:52,677 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 462 transitions, 9124 flow [2024-06-27 22:36:52,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:52,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:52,678 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 22:36:52,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 22:36:52,678 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:52,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:52,678 INFO L85 PathProgramCache]: Analyzing trace with hash -371305279, now seen corresponding path program 7 times [2024-06-27 22:36:52,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:52,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394876839] [2024-06-27 22:36:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:52,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:54,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:54,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394876839] [2024-06-27 22:36:54,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394876839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:54,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:54,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:54,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254831377] [2024-06-27 22:36:54,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:54,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:54,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:54,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:54,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:54,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:54,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 462 transitions, 9124 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:54,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:54,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:54,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:55,436 INFO L124 PetriNetUnfolderBase]: 1869/3613 cut-off events. [2024-06-27 22:36:55,436 INFO L125 PetriNetUnfolderBase]: For 166600/166600 co-relation queries the response was YES. [2024-06-27 22:36:55,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25361 conditions, 3613 events. 1869/3613 cut-off events. For 166600/166600 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 24912 event pairs, 559 based on Foata normal form. 2/3380 useless extension candidates. Maximal degree in co-relation 25204. Up to 2927 conditions per place. [2024-06-27 22:36:55,482 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 361 selfloop transitions, 114 changer transitions 0/483 dead transitions. [2024-06-27 22:36:55,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 483 transitions, 10216 flow [2024-06-27 22:36:55,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:55,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 22:36:55,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 22:36:55,484 INFO L175 Difference]: Start difference. First operand has 374 places, 462 transitions, 9124 flow. Second operand 10 states and 161 transitions. [2024-06-27 22:36:55,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 483 transitions, 10216 flow [2024-06-27 22:36:56,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 483 transitions, 9871 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:56,320 INFO L231 Difference]: Finished difference. Result has 375 places, 464 transitions, 9038 flow [2024-06-27 22:36:56,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8781, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9038, PETRI_PLACES=375, PETRI_TRANSITIONS=464} [2024-06-27 22:36:56,320 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 334 predicate places. [2024-06-27 22:36:56,320 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 464 transitions, 9038 flow [2024-06-27 22:36:56,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:56,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:56,320 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 22:36:56,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 22:36:56,320 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:56,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:56,321 INFO L85 PathProgramCache]: Analyzing trace with hash -375773743, now seen corresponding path program 5 times [2024-06-27 22:36:56,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:56,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302217384] [2024-06-27 22:36:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:56,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:57,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:57,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302217384] [2024-06-27 22:36:57,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302217384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:57,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:57,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:57,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493009764] [2024-06-27 22:36:57,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:57,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:57,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:57,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:57,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:57,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:36:57,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 464 transitions, 9038 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:57,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:57,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:36:57,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:58,993 INFO L124 PetriNetUnfolderBase]: 1882/3636 cut-off events. [2024-06-27 22:36:58,994 INFO L125 PetriNetUnfolderBase]: For 169077/169077 co-relation queries the response was YES. [2024-06-27 22:36:59,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25398 conditions, 3636 events. 1882/3636 cut-off events. For 169077/169077 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 25076 event pairs, 558 based on Foata normal form. 2/3399 useless extension candidates. Maximal degree in co-relation 25240. Up to 2882 conditions per place. [2024-06-27 22:36:59,043 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 356 selfloop transitions, 127 changer transitions 0/491 dead transitions. [2024-06-27 22:36:59,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 491 transitions, 10391 flow [2024-06-27 22:36:59,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:59,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:59,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:36:59,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:36:59,044 INFO L175 Difference]: Start difference. First operand has 375 places, 464 transitions, 9038 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:36:59,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 491 transitions, 10391 flow [2024-06-27 22:36:59,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 491 transitions, 10154 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:59,962 INFO L231 Difference]: Finished difference. Result has 377 places, 466 transitions, 9100 flow [2024-06-27 22:36:59,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8801, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9100, PETRI_PLACES=377, PETRI_TRANSITIONS=466} [2024-06-27 22:36:59,963 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-27 22:36:59,963 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 466 transitions, 9100 flow [2024-06-27 22:36:59,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:59,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:59,963 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 22:36:59,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 22:36:59,963 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:59,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:59,963 INFO L85 PathProgramCache]: Analyzing trace with hash -233483215, now seen corresponding path program 8 times [2024-06-27 22:36:59,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:59,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248425329] [2024-06-27 22:36:59,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:59,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:01,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:01,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248425329] [2024-06-27 22:37:01,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248425329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:01,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:01,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:01,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516215453] [2024-06-27 22:37:01,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:01,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:01,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:01,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:01,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:01,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:01,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 466 transitions, 9100 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:01,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:01,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:01,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:02,788 INFO L124 PetriNetUnfolderBase]: 1899/3675 cut-off events. [2024-06-27 22:37:02,788 INFO L125 PetriNetUnfolderBase]: For 172797/172797 co-relation queries the response was YES. [2024-06-27 22:37:02,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25666 conditions, 3675 events. 1899/3675 cut-off events. For 172797/172797 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 25408 event pairs, 573 based on Foata normal form. 2/3437 useless extension candidates. Maximal degree in co-relation 25507. Up to 2954 conditions per place. [2024-06-27 22:37:02,829 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 366 selfloop transitions, 115 changer transitions 0/489 dead transitions. [2024-06-27 22:37:02,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 489 transitions, 10216 flow [2024-06-27 22:37:02,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:02,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:02,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:37:02,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 22:37:02,830 INFO L175 Difference]: Start difference. First operand has 377 places, 466 transitions, 9100 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:37:02,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 489 transitions, 10216 flow [2024-06-27 22:37:03,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 489 transitions, 9945 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:37:03,693 INFO L231 Difference]: Finished difference. Result has 379 places, 467 transitions, 9079 flow [2024-06-27 22:37:03,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8829, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9079, PETRI_PLACES=379, PETRI_TRANSITIONS=467} [2024-06-27 22:37:03,693 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2024-06-27 22:37:03,693 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 467 transitions, 9079 flow [2024-06-27 22:37:03,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:03,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:03,694 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 22:37:03,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 22:37:03,694 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:03,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:03,694 INFO L85 PathProgramCache]: Analyzing trace with hash -375778579, now seen corresponding path program 9 times [2024-06-27 22:37:03,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:03,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139165328] [2024-06-27 22:37:03,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:03,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:05,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:05,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139165328] [2024-06-27 22:37:05,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139165328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:05,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:05,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:05,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322703577] [2024-06-27 22:37:05,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:05,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:05,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:05,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:05,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:05,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:05,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 467 transitions, 9079 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:05,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:05,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:05,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:06,565 INFO L124 PetriNetUnfolderBase]: 1916/3714 cut-off events. [2024-06-27 22:37:06,566 INFO L125 PetriNetUnfolderBase]: For 175618/175618 co-relation queries the response was YES. [2024-06-27 22:37:06,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25810 conditions, 3714 events. 1916/3714 cut-off events. For 175618/175618 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 25839 event pairs, 577 based on Foata normal form. 2/3476 useless extension candidates. Maximal degree in co-relation 25650. Up to 2933 conditions per place. [2024-06-27 22:37:06,617 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 370 selfloop transitions, 116 changer transitions 0/494 dead transitions. [2024-06-27 22:37:06,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 494 transitions, 10229 flow [2024-06-27 22:37:06,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:06,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:37:06,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 22:37:06,618 INFO L175 Difference]: Start difference. First operand has 379 places, 467 transitions, 9079 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:37:06,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 494 transitions, 10229 flow [2024-06-27 22:37:07,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 494 transitions, 9993 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:37:07,563 INFO L231 Difference]: Finished difference. Result has 381 places, 468 transitions, 9097 flow [2024-06-27 22:37:07,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8843, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9097, PETRI_PLACES=381, PETRI_TRANSITIONS=468} [2024-06-27 22:37:07,563 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 340 predicate places. [2024-06-27 22:37:07,563 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 468 transitions, 9097 flow [2024-06-27 22:37:07,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:07,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:07,563 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 22:37:07,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 22:37:07,563 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:07,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:07,564 INFO L85 PathProgramCache]: Analyzing trace with hash -375893899, now seen corresponding path program 10 times [2024-06-27 22:37:07,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:07,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966056378] [2024-06-27 22:37:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:07,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:09,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:09,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966056378] [2024-06-27 22:37:09,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966056378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:09,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:09,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:09,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120205189] [2024-06-27 22:37:09,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:09,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:09,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:09,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:09,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:09,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:09,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 468 transitions, 9097 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:09,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:09,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:09,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:10,433 INFO L124 PetriNetUnfolderBase]: 1933/3739 cut-off events. [2024-06-27 22:37:10,433 INFO L125 PetriNetUnfolderBase]: For 179121/179121 co-relation queries the response was YES. [2024-06-27 22:37:10,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26032 conditions, 3739 events. 1933/3739 cut-off events. For 179121/179121 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 25975 event pairs, 580 based on Foata normal form. 2/3502 useless extension candidates. Maximal degree in co-relation 25871. Up to 2787 conditions per place. [2024-06-27 22:37:10,488 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 370 selfloop transitions, 121 changer transitions 0/499 dead transitions. [2024-06-27 22:37:10,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 499 transitions, 10281 flow [2024-06-27 22:37:10,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:10,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:37:10,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 22:37:10,489 INFO L175 Difference]: Start difference. First operand has 381 places, 468 transitions, 9097 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:37:10,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 499 transitions, 10281 flow [2024-06-27 22:37:11,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 499 transitions, 10041 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 22:37:11,469 INFO L231 Difference]: Finished difference. Result has 383 places, 469 transitions, 9123 flow [2024-06-27 22:37:11,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8857, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9123, PETRI_PLACES=383, PETRI_TRANSITIONS=469} [2024-06-27 22:37:11,470 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-27 22:37:11,470 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 469 transitions, 9123 flow [2024-06-27 22:37:11,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:11,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:11,470 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 22:37:11,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 22:37:11,470 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:11,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:11,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1250229225, now seen corresponding path program 11 times [2024-06-27 22:37:11,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:11,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287419252] [2024-06-27 22:37:11,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:11,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:12,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:12,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:12,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287419252] [2024-06-27 22:37:12,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287419252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:12,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:12,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:12,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167112607] [2024-06-27 22:37:12,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:12,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:12,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:12,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:12,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:13,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:13,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 469 transitions, 9123 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:13,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:13,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:13,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:14,401 INFO L124 PetriNetUnfolderBase]: 1950/3742 cut-off events. [2024-06-27 22:37:14,401 INFO L125 PetriNetUnfolderBase]: For 183024/183024 co-relation queries the response was YES. [2024-06-27 22:37:14,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26288 conditions, 3742 events. 1950/3742 cut-off events. For 183024/183024 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 25929 event pairs, 532 based on Foata normal form. 2/3513 useless extension candidates. Maximal degree in co-relation 26126. Up to 2689 conditions per place. [2024-06-27 22:37:14,451 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 348 selfloop transitions, 148 changer transitions 0/504 dead transitions. [2024-06-27 22:37:14,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 504 transitions, 10521 flow [2024-06-27 22:37:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:14,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:14,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:37:14,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 22:37:14,452 INFO L175 Difference]: Start difference. First operand has 383 places, 469 transitions, 9123 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:37:14,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 504 transitions, 10521 flow [2024-06-27 22:37:15,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 504 transitions, 10269 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 22:37:15,414 INFO L231 Difference]: Finished difference. Result has 385 places, 470 transitions, 9191 flow [2024-06-27 22:37:15,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8871, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9191, PETRI_PLACES=385, PETRI_TRANSITIONS=470} [2024-06-27 22:37:15,414 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 344 predicate places. [2024-06-27 22:37:15,414 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 470 transitions, 9191 flow [2024-06-27 22:37:15,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:15,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:15,415 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 22:37:15,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 22:37:15,415 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:15,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:15,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1250109069, now seen corresponding path program 6 times [2024-06-27 22:37:15,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:15,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084031634] [2024-06-27 22:37:15,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:16,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:16,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084031634] [2024-06-27 22:37:16,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084031634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:16,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:16,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:16,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018193846] [2024-06-27 22:37:16,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:16,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:16,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:16,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:16,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:17,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:17,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 470 transitions, 9191 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:17,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:17,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:17,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:18,222 INFO L124 PetriNetUnfolderBase]: 1963/3816 cut-off events. [2024-06-27 22:37:18,222 INFO L125 PetriNetUnfolderBase]: For 186232/186232 co-relation queries the response was YES. [2024-06-27 22:37:18,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26527 conditions, 3816 events. 1963/3816 cut-off events. For 186232/186232 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 26703 event pairs, 615 based on Foata normal form. 2/3570 useless extension candidates. Maximal degree in co-relation 26364. Up to 2918 conditions per place. [2024-06-27 22:37:18,274 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 340 selfloop transitions, 155 changer transitions 0/503 dead transitions. [2024-06-27 22:37:18,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 503 transitions, 10808 flow [2024-06-27 22:37:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:18,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:18,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:37:18,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 22:37:18,276 INFO L175 Difference]: Start difference. First operand has 385 places, 470 transitions, 9191 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:37:18,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 503 transitions, 10808 flow [2024-06-27 22:37:19,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 503 transitions, 10321 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 22:37:19,190 INFO L231 Difference]: Finished difference. Result has 386 places, 475 transitions, 9155 flow [2024-06-27 22:37:19,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8705, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9155, PETRI_PLACES=386, PETRI_TRANSITIONS=475} [2024-06-27 22:37:19,191 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-27 22:37:19,191 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 475 transitions, 9155 flow [2024-06-27 22:37:19,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:19,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:19,192 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 22:37:19,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 22:37:19,192 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:19,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:19,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1250113905, now seen corresponding path program 12 times [2024-06-27 22:37:19,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:19,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814801175] [2024-06-27 22:37:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:19,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:20,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:20,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814801175] [2024-06-27 22:37:20,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814801175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:20,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:20,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:20,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89935772] [2024-06-27 22:37:20,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:20,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:20,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:20,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:20,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:20,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:20,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 475 transitions, 9155 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:20,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:20,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:20,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:22,042 INFO L124 PetriNetUnfolderBase]: 2000/3893 cut-off events. [2024-06-27 22:37:22,042 INFO L125 PetriNetUnfolderBase]: For 198755/198755 co-relation queries the response was YES. [2024-06-27 22:37:22,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26665 conditions, 3893 events. 2000/3893 cut-off events. For 198755/198755 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 27442 event pairs, 606 based on Foata normal form. 2/3645 useless extension candidates. Maximal degree in co-relation 26502. Up to 3007 conditions per place. [2024-06-27 22:37:22,087 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 351 selfloop transitions, 147 changer transitions 0/506 dead transitions. [2024-06-27 22:37:22,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 506 transitions, 10547 flow [2024-06-27 22:37:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:37:22,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:37:22,088 INFO L175 Difference]: Start difference. First operand has 386 places, 475 transitions, 9155 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:37:22,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 506 transitions, 10547 flow [2024-06-27 22:37:22,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 506 transitions, 10348 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 22:37:22,971 INFO L231 Difference]: Finished difference. Result has 390 places, 477 transitions, 9288 flow [2024-06-27 22:37:22,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8956, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9288, PETRI_PLACES=390, PETRI_TRANSITIONS=477} [2024-06-27 22:37:22,971 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-27 22:37:22,971 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 477 transitions, 9288 flow [2024-06-27 22:37:22,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:22,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:22,972 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 22:37:22,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 22:37:22,972 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:22,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:22,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1250109255, now seen corresponding path program 13 times [2024-06-27 22:37:22,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:22,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888933342] [2024-06-27 22:37:22,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:22,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:24,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:24,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:24,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888933342] [2024-06-27 22:37:24,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888933342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:24,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:24,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:24,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143962652] [2024-06-27 22:37:24,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:24,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:24,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:24,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:24,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:24,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:24,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 477 transitions, 9288 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:24,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:24,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:24,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:25,800 INFO L124 PetriNetUnfolderBase]: 1997/3896 cut-off events. [2024-06-27 22:37:25,801 INFO L125 PetriNetUnfolderBase]: For 193508/193508 co-relation queries the response was YES. [2024-06-27 22:37:25,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26496 conditions, 3896 events. 1997/3896 cut-off events. For 193508/193508 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 27493 event pairs, 615 based on Foata normal form. 2/3645 useless extension candidates. Maximal degree in co-relation 26332. Up to 3057 conditions per place. [2024-06-27 22:37:25,856 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 347 selfloop transitions, 146 changer transitions 0/501 dead transitions. [2024-06-27 22:37:25,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 501 transitions, 10422 flow [2024-06-27 22:37:25,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:25,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:25,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:37:25,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 22:37:25,857 INFO L175 Difference]: Start difference. First operand has 390 places, 477 transitions, 9288 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:37:25,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 501 transitions, 10422 flow [2024-06-27 22:37:26,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 501 transitions, 10186 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 22:37:26,982 INFO L231 Difference]: Finished difference. Result has 394 places, 477 transitions, 9348 flow [2024-06-27 22:37:26,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9052, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9348, PETRI_PLACES=394, PETRI_TRANSITIONS=477} [2024-06-27 22:37:26,983 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 353 predicate places. [2024-06-27 22:37:26,983 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 477 transitions, 9348 flow [2024-06-27 22:37:26,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:26,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:26,983 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 22:37:26,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 22:37:26,983 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:26,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:26,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1072971039, now seen corresponding path program 7 times [2024-06-27 22:37:26,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:26,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054343009] [2024-06-27 22:37:26,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:26,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:28,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:28,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054343009] [2024-06-27 22:37:28,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054343009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:28,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:28,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:37:28,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707750088] [2024-06-27 22:37:28,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:28,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:37:28,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:28,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:37:28,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:37:28,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:28,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 477 transitions, 9348 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:37:28,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:28,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:28,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:29,974 INFO L124 PetriNetUnfolderBase]: 2027/3933 cut-off events. [2024-06-27 22:37:29,974 INFO L125 PetriNetUnfolderBase]: For 197075/197075 co-relation queries the response was YES. [2024-06-27 22:37:30,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26959 conditions, 3933 events. 2027/3933 cut-off events. For 197075/197075 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 27636 event pairs, 596 based on Foata normal form. 2/3672 useless extension candidates. Maximal degree in co-relation 26793. Up to 2973 conditions per place. [2024-06-27 22:37:30,154 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 325 selfloop transitions, 175 changer transitions 0/508 dead transitions. [2024-06-27 22:37:30,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 508 transitions, 10643 flow [2024-06-27 22:37:30,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:30,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:30,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 22:37:30,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-27 22:37:30,155 INFO L175 Difference]: Start difference. First operand has 394 places, 477 transitions, 9348 flow. Second operand 11 states and 175 transitions. [2024-06-27 22:37:30,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 508 transitions, 10643 flow [2024-06-27 22:37:31,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 508 transitions, 10349 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:31,214 INFO L231 Difference]: Finished difference. Result has 396 places, 485 transitions, 9551 flow [2024-06-27 22:37:31,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9054, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9551, PETRI_PLACES=396, PETRI_TRANSITIONS=485} [2024-06-27 22:37:31,215 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-27 22:37:31,215 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 485 transitions, 9551 flow [2024-06-27 22:37:31,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:37:31,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:31,215 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 22:37:31,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 22:37:31,215 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:31,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:31,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1955561305, now seen corresponding path program 8 times [2024-06-27 22:37:31,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:31,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678301170] [2024-06-27 22:37:31,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:31,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:33,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:33,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678301170] [2024-06-27 22:37:33,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678301170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:33,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:33,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:37:33,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729546189] [2024-06-27 22:37:33,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:33,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:37:33,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:33,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:37:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:37:33,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:33,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 485 transitions, 9551 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:37:33,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:33,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:33,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:34,381 INFO L124 PetriNetUnfolderBase]: 2057/3977 cut-off events. [2024-06-27 22:37:34,381 INFO L125 PetriNetUnfolderBase]: For 212079/212079 co-relation queries the response was YES. [2024-06-27 22:37:34,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27702 conditions, 3977 events. 2057/3977 cut-off events. For 212079/212079 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 27895 event pairs, 598 based on Foata normal form. 2/3710 useless extension candidates. Maximal degree in co-relation 27535. Up to 2961 conditions per place. [2024-06-27 22:37:34,437 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 326 selfloop transitions, 181 changer transitions 0/515 dead transitions. [2024-06-27 22:37:34,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 515 transitions, 11211 flow [2024-06-27 22:37:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:34,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:37:34,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 22:37:34,438 INFO L175 Difference]: Start difference. First operand has 396 places, 485 transitions, 9551 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:37:34,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 515 transitions, 11211 flow [2024-06-27 22:37:35,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 515 transitions, 10849 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:37:35,570 INFO L231 Difference]: Finished difference. Result has 400 places, 489 transitions, 9668 flow [2024-06-27 22:37:35,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9189, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9668, PETRI_PLACES=400, PETRI_TRANSITIONS=489} [2024-06-27 22:37:35,570 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 359 predicate places. [2024-06-27 22:37:35,570 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 489 transitions, 9668 flow [2024-06-27 22:37:35,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:37:35,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:35,571 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 22:37:35,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 22:37:35,571 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:35,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1072731471, now seen corresponding path program 1 times [2024-06-27 22:37:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:35,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414086946] [2024-06-27 22:37:35,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:35,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:37,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:37,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414086946] [2024-06-27 22:37:37,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414086946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:37,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:37,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:37,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428785760] [2024-06-27 22:37:37,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:37,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:37,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:37,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:37,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:37,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:37,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 489 transitions, 9668 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:37,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:37,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:37,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:38,525 INFO L124 PetriNetUnfolderBase]: 2091/4063 cut-off events. [2024-06-27 22:37:38,525 INFO L125 PetriNetUnfolderBase]: For 226575/226575 co-relation queries the response was YES. [2024-06-27 22:37:38,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28183 conditions, 4063 events. 2091/4063 cut-off events. For 226575/226575 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 28732 event pairs, 604 based on Foata normal form. 4/3796 useless extension candidates. Maximal degree in co-relation 28014. Up to 3044 conditions per place. [2024-06-27 22:37:38,583 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 340 selfloop transitions, 165 changer transitions 0/513 dead transitions. [2024-06-27 22:37:38,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 513 transitions, 10856 flow [2024-06-27 22:37:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:38,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:37:38,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:37:38,584 INFO L175 Difference]: Start difference. First operand has 400 places, 489 transitions, 9668 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:37:38,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 513 transitions, 10856 flow [2024-06-27 22:37:39,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 513 transitions, 10557 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 22:37:39,647 INFO L231 Difference]: Finished difference. Result has 403 places, 491 transitions, 9743 flow [2024-06-27 22:37:39,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9369, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9743, PETRI_PLACES=403, PETRI_TRANSITIONS=491} [2024-06-27 22:37:39,648 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 362 predicate places. [2024-06-27 22:37:39,648 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 491 transitions, 9743 flow [2024-06-27 22:37:39,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:39,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:39,648 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 22:37:39,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 22:37:39,648 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:39,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:39,648 INFO L85 PathProgramCache]: Analyzing trace with hash -936936435, now seen corresponding path program 9 times [2024-06-27 22:37:39,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:39,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054517085] [2024-06-27 22:37:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:39,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:41,163 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 22:37:41,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:41,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054517085] [2024-06-27 22:37:41,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054517085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:41,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:41,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:41,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571461128] [2024-06-27 22:37:41,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:41,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:41,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:41,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:41,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:41,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:41,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 491 transitions, 9743 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:41,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:41,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:41,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:42,535 INFO L124 PetriNetUnfolderBase]: 2104/4079 cut-off events. [2024-06-27 22:37:42,536 INFO L125 PetriNetUnfolderBase]: For 222032/222032 co-relation queries the response was YES. [2024-06-27 22:37:42,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28402 conditions, 4079 events. 2104/4079 cut-off events. For 222032/222032 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 28835 event pairs, 611 based on Foata normal form. 2/3806 useless extension candidates. Maximal degree in co-relation 28232. Up to 3098 conditions per place. [2024-06-27 22:37:42,592 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 339 selfloop transitions, 171 changer transitions 0/518 dead transitions. [2024-06-27 22:37:42,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 518 transitions, 11013 flow [2024-06-27 22:37:42,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:42,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 22:37:42,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:37:42,593 INFO L175 Difference]: Start difference. First operand has 403 places, 491 transitions, 9743 flow. Second operand 11 states and 176 transitions. [2024-06-27 22:37:42,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 518 transitions, 11013 flow [2024-06-27 22:37:43,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 518 transitions, 10665 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:37:43,925 INFO L231 Difference]: Finished difference. Result has 406 places, 493 transitions, 9799 flow [2024-06-27 22:37:43,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9395, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9799, PETRI_PLACES=406, PETRI_TRANSITIONS=493} [2024-06-27 22:37:43,926 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-27 22:37:43,926 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 493 transitions, 9799 flow [2024-06-27 22:37:43,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:43,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:43,926 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 22:37:43,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 22:37:43,926 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:43,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:43,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1072977735, now seen corresponding path program 14 times [2024-06-27 22:37:43,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:43,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289011294] [2024-06-27 22:37:43,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:43,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:45,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:45,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289011294] [2024-06-27 22:37:45,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289011294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:45,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:45,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:37:45,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985349759] [2024-06-27 22:37:45,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:45,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:37:45,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:45,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:37:45,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:37:45,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:45,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 493 transitions, 9799 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:37:45,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:45,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:45,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:46,871 INFO L124 PetriNetUnfolderBase]: 2121/4116 cut-off events. [2024-06-27 22:37:46,871 INFO L125 PetriNetUnfolderBase]: For 225783/225783 co-relation queries the response was YES. [2024-06-27 22:37:46,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28499 conditions, 4116 events. 2121/4116 cut-off events. For 225783/225783 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 29182 event pairs, 638 based on Foata normal form. 2/3840 useless extension candidates. Maximal degree in co-relation 28328. Up to 3360 conditions per place. [2024-06-27 22:37:46,924 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 386 selfloop transitions, 120 changer transitions 0/514 dead transitions. [2024-06-27 22:37:46,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 514 transitions, 10951 flow [2024-06-27 22:37:46,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:46,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 22:37:46,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-27 22:37:46,925 INFO L175 Difference]: Start difference. First operand has 406 places, 493 transitions, 9799 flow. Second operand 11 states and 169 transitions. [2024-06-27 22:37:46,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 514 transitions, 10951 flow [2024-06-27 22:37:48,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 514 transitions, 10577 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:48,091 INFO L231 Difference]: Finished difference. Result has 408 places, 494 transitions, 9689 flow [2024-06-27 22:37:48,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9425, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9689, PETRI_PLACES=408, PETRI_TRANSITIONS=494} [2024-06-27 22:37:48,092 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-27 22:37:48,092 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 494 transitions, 9689 flow [2024-06-27 22:37:48,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:37:48,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:48,092 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 22:37:48,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 22:37:48,092 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:48,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:48,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1079233659, now seen corresponding path program 10 times [2024-06-27 22:37:48,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:48,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108795663] [2024-06-27 22:37:48,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:48,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:49,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:49,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108795663] [2024-06-27 22:37:49,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108795663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:49,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:49,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:37:49,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662204708] [2024-06-27 22:37:49,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:49,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:37:49,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:37:49,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:37:49,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:49,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 494 transitions, 9689 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:37:49,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:49,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:49,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:51,146 INFO L124 PetriNetUnfolderBase]: 2134/4140 cut-off events. [2024-06-27 22:37:51,146 INFO L125 PetriNetUnfolderBase]: For 227955/227955 co-relation queries the response was YES. [2024-06-27 22:37:51,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28478 conditions, 4140 events. 2134/4140 cut-off events. For 227955/227955 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 29367 event pairs, 646 based on Foata normal form. 2/3862 useless extension candidates. Maximal degree in co-relation 28306. Up to 3358 conditions per place. [2024-06-27 22:37:51,206 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 383 selfloop transitions, 127 changer transitions 0/518 dead transitions. [2024-06-27 22:37:51,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 518 transitions, 11125 flow [2024-06-27 22:37:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:51,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 22:37:51,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-27 22:37:51,207 INFO L175 Difference]: Start difference. First operand has 408 places, 494 transitions, 9689 flow. Second operand 11 states and 173 transitions. [2024-06-27 22:37:51,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 518 transitions, 11125 flow [2024-06-27 22:37:52,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 518 transitions, 10875 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:52,604 INFO L231 Difference]: Finished difference. Result has 410 places, 496 transitions, 9746 flow [2024-06-27 22:37:52,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9439, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9746, PETRI_PLACES=410, PETRI_TRANSITIONS=496} [2024-06-27 22:37:52,604 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 369 predicate places. [2024-06-27 22:37:52,604 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 496 transitions, 9746 flow [2024-06-27 22:37:52,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:37:52,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:52,605 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 22:37:52,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 22:37:52,605 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:52,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:52,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1079406825, now seen corresponding path program 15 times [2024-06-27 22:37:52,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:52,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914325022] [2024-06-27 22:37:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:52,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:54,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:54,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914325022] [2024-06-27 22:37:54,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914325022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:54,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:54,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:54,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502631165] [2024-06-27 22:37:54,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:54,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:54,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:54,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:54,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:54,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:54,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 496 transitions, 9746 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:54,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:54,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:54,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:55,468 INFO L124 PetriNetUnfolderBase]: 2147/4162 cut-off events. [2024-06-27 22:37:55,468 INFO L125 PetriNetUnfolderBase]: For 232494/232494 co-relation queries the response was YES. [2024-06-27 22:37:55,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28632 conditions, 4162 events. 2147/4162 cut-off events. For 232494/232494 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 29518 event pairs, 640 based on Foata normal form. 2/3883 useless extension candidates. Maximal degree in co-relation 28459. Up to 3387 conditions per place. [2024-06-27 22:37:55,524 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 391 selfloop transitions, 119 changer transitions 0/518 dead transitions. [2024-06-27 22:37:55,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 518 transitions, 10934 flow [2024-06-27 22:37:55,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 22:37:55,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 22:37:55,525 INFO L175 Difference]: Start difference. First operand has 410 places, 496 transitions, 9746 flow. Second operand 10 states and 161 transitions. [2024-06-27 22:37:55,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 518 transitions, 10934 flow [2024-06-27 22:37:56,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 518 transitions, 10640 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:56,773 INFO L231 Difference]: Finished difference. Result has 411 places, 498 transitions, 9731 flow [2024-06-27 22:37:56,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9452, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9731, PETRI_PLACES=411, PETRI_TRANSITIONS=498} [2024-06-27 22:37:56,773 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-27 22:37:56,773 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 498 transitions, 9731 flow [2024-06-27 22:37:56,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:56,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:56,773 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 22:37:56,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 22:37:56,774 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:56,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:56,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1072740399, now seen corresponding path program 11 times [2024-06-27 22:37:56,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:56,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242684896] [2024-06-27 22:37:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:56,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:56,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:58,415 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 22:37:58,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:58,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242684896] [2024-06-27 22:37:58,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242684896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:58,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:58,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:58,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488086714] [2024-06-27 22:37:58,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:58,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:58,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:58,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:58,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:58,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:37:58,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 498 transitions, 9731 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:58,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:58,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:37:58,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:59,983 INFO L124 PetriNetUnfolderBase]: 2143/4152 cut-off events. [2024-06-27 22:37:59,983 INFO L125 PetriNetUnfolderBase]: For 224865/224865 co-relation queries the response was YES. [2024-06-27 22:38:00,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28438 conditions, 4152 events. 2143/4152 cut-off events. For 224865/224865 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 29450 event pairs, 623 based on Foata normal form. 2/3872 useless extension candidates. Maximal degree in co-relation 28264. Up to 3165 conditions per place. [2024-06-27 22:38:00,033 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 327 selfloop transitions, 183 changer transitions 0/518 dead transitions. [2024-06-27 22:38:00,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 518 transitions, 10875 flow [2024-06-27 22:38:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:00,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:00,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:38:00,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:38:00,034 INFO L175 Difference]: Start difference. First operand has 411 places, 498 transitions, 9731 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:38:00,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 518 transitions, 10875 flow [2024-06-27 22:38:01,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 518 transitions, 10600 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:01,312 INFO L231 Difference]: Finished difference. Result has 413 places, 498 transitions, 9830 flow [2024-06-27 22:38:01,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9456, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9830, PETRI_PLACES=413, PETRI_TRANSITIONS=498} [2024-06-27 22:38:01,313 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-27 22:38:01,313 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 498 transitions, 9830 flow [2024-06-27 22:38:01,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:01,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:01,313 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 22:38:01,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 22:38:01,313 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:01,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:01,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1079406639, now seen corresponding path program 12 times [2024-06-27 22:38:01,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:01,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795797632] [2024-06-27 22:38:01,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:01,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:02,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:02,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795797632] [2024-06-27 22:38:02,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795797632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:02,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:02,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:02,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643307875] [2024-06-27 22:38:02,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:02,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:02,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:02,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:02,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:03,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:03,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 498 transitions, 9830 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:03,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:03,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:03,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:04,435 INFO L124 PetriNetUnfolderBase]: 2156/4175 cut-off events. [2024-06-27 22:38:04,435 INFO L125 PetriNetUnfolderBase]: For 229389/229389 co-relation queries the response was YES. [2024-06-27 22:38:04,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28736 conditions, 4175 events. 2156/4175 cut-off events. For 229389/229389 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 29636 event pairs, 617 based on Foata normal form. 2/3892 useless extension candidates. Maximal degree in co-relation 28561. Up to 3071 conditions per place. [2024-06-27 22:38:04,494 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 336 selfloop transitions, 183 changer transitions 0/527 dead transitions. [2024-06-27 22:38:04,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 527 transitions, 11318 flow [2024-06-27 22:38:04,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:04,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:38:04,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 22:38:04,495 INFO L175 Difference]: Start difference. First operand has 413 places, 498 transitions, 9830 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:38:04,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 527 transitions, 11318 flow [2024-06-27 22:38:05,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 527 transitions, 10956 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:05,770 INFO L231 Difference]: Finished difference. Result has 416 places, 500 transitions, 9891 flow [2024-06-27 22:38:05,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9468, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9891, PETRI_PLACES=416, PETRI_TRANSITIONS=500} [2024-06-27 22:38:05,771 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2024-06-27 22:38:05,771 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 500 transitions, 9891 flow [2024-06-27 22:38:05,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:05,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:05,771 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 22:38:05,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 22:38:05,771 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:05,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash -936943131, now seen corresponding path program 16 times [2024-06-27 22:38:05,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:05,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053408377] [2024-06-27 22:38:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:05,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:07,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:07,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053408377] [2024-06-27 22:38:07,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053408377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:07,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:07,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:07,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650596790] [2024-06-27 22:38:07,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:07,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:07,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:07,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:07,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:07,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:07,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 500 transitions, 9891 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:07,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:07,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:07,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:08,699 INFO L124 PetriNetUnfolderBase]: 2173/4214 cut-off events. [2024-06-27 22:38:08,699 INFO L125 PetriNetUnfolderBase]: For 234855/234855 co-relation queries the response was YES. [2024-06-27 22:38:08,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29019 conditions, 4214 events. 2173/4214 cut-off events. For 234855/234855 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 30028 event pairs, 652 based on Foata normal form. 2/3930 useless extension candidates. Maximal degree in co-relation 28843. Up to 3446 conditions per place. [2024-06-27 22:38:08,755 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 399 selfloop transitions, 116 changer transitions 0/523 dead transitions. [2024-06-27 22:38:08,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 523 transitions, 11107 flow [2024-06-27 22:38:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 22:38:08,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 22:38:08,756 INFO L175 Difference]: Start difference. First operand has 416 places, 500 transitions, 9891 flow. Second operand 10 states and 161 transitions. [2024-06-27 22:38:08,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 523 transitions, 11107 flow [2024-06-27 22:38:10,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 523 transitions, 10712 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 22:38:10,038 INFO L231 Difference]: Finished difference. Result has 417 places, 501 transitions, 9756 flow [2024-06-27 22:38:10,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9496, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9756, PETRI_PLACES=417, PETRI_TRANSITIONS=501} [2024-06-27 22:38:10,038 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2024-06-27 22:38:10,038 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 501 transitions, 9756 flow [2024-06-27 22:38:10,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:10,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:10,039 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 22:38:10,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 22:38:10,039 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:10,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:10,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1079411475, now seen corresponding path program 17 times [2024-06-27 22:38:10,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:10,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499216561] [2024-06-27 22:38:10,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:10,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:11,677 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 22:38:11,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:11,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499216561] [2024-06-27 22:38:11,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499216561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:11,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:11,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:11,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655762040] [2024-06-27 22:38:11,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:11,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:11,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:11,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:11,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:11,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:11,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 501 transitions, 9756 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:11,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:11,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:11,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:13,241 INFO L124 PetriNetUnfolderBase]: 2194/4269 cut-off events. [2024-06-27 22:38:13,241 INFO L125 PetriNetUnfolderBase]: For 237305/237305 co-relation queries the response was YES. [2024-06-27 22:38:13,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29034 conditions, 4269 events. 2194/4269 cut-off events. For 237305/237305 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 30594 event pairs, 658 based on Foata normal form. 2/3985 useless extension candidates. Maximal degree in co-relation 28857. Up to 3370 conditions per place. [2024-06-27 22:38:13,300 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 399 selfloop transitions, 122 changer transitions 0/529 dead transitions. [2024-06-27 22:38:13,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 529 transitions, 11022 flow [2024-06-27 22:38:13,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:13,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:38:13,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 22:38:13,301 INFO L175 Difference]: Start difference. First operand has 417 places, 501 transitions, 9756 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:38:13,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 529 transitions, 11022 flow [2024-06-27 22:38:14,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 529 transitions, 10778 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:14,589 INFO L231 Difference]: Finished difference. Result has 419 places, 503 transitions, 9810 flow [2024-06-27 22:38:14,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9512, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9810, PETRI_PLACES=419, PETRI_TRANSITIONS=503} [2024-06-27 22:38:14,590 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-27 22:38:14,590 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 503 transitions, 9810 flow [2024-06-27 22:38:14,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:14,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:14,590 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 22:38:14,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 22:38:14,590 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:14,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:14,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1245645255, now seen corresponding path program 18 times [2024-06-27 22:38:14,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:14,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688830286] [2024-06-27 22:38:14,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:14,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:16,163 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 22:38:16,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:16,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688830286] [2024-06-27 22:38:16,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688830286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:16,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:16,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:16,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666713634] [2024-06-27 22:38:16,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:16,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:16,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:16,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:16,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:16,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:16,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 503 transitions, 9810 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:16,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:16,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:16,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:17,730 INFO L124 PetriNetUnfolderBase]: 2231/4360 cut-off events. [2024-06-27 22:38:17,730 INFO L125 PetriNetUnfolderBase]: For 254752/254752 co-relation queries the response was YES. [2024-06-27 22:38:17,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29855 conditions, 4360 events. 2231/4360 cut-off events. For 254752/254752 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 31542 event pairs, 667 based on Foata normal form. 2/4070 useless extension candidates. Maximal degree in co-relation 29677. Up to 3480 conditions per place. [2024-06-27 22:38:17,799 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 398 selfloop transitions, 128 changer transitions 0/534 dead transitions. [2024-06-27 22:38:17,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 534 transitions, 11338 flow [2024-06-27 22:38:17,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:17,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:17,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:38:17,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:38:17,800 INFO L175 Difference]: Start difference. First operand has 419 places, 503 transitions, 9810 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:38:17,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 534 transitions, 11338 flow [2024-06-27 22:38:19,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 534 transitions, 11154 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 22:38:19,260 INFO L231 Difference]: Finished difference. Result has 423 places, 505 transitions, 9940 flow [2024-06-27 22:38:19,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9626, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9940, PETRI_PLACES=423, PETRI_TRANSITIONS=505} [2024-06-27 22:38:19,261 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 382 predicate places. [2024-06-27 22:38:19,261 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 505 transitions, 9940 flow [2024-06-27 22:38:19,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:19,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:19,261 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 22:38:19,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 22:38:19,261 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:19,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:19,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1245467625, now seen corresponding path program 19 times [2024-06-27 22:38:19,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:19,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425188414] [2024-06-27 22:38:19,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:19,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:20,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:20,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425188414] [2024-06-27 22:38:20,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425188414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:20,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:20,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:38:20,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140843734] [2024-06-27 22:38:20,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:20,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:38:20,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:20,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:38:20,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:38:20,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:20,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 505 transitions, 9940 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:38:20,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:20,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:20,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:22,276 INFO L124 PetriNetUnfolderBase]: 2248/4402 cut-off events. [2024-06-27 22:38:22,277 INFO L125 PetriNetUnfolderBase]: For 259122/259122 co-relation queries the response was YES. [2024-06-27 22:38:22,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30263 conditions, 4402 events. 2248/4402 cut-off events. For 259122/259122 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 31997 event pairs, 683 based on Foata normal form. 2/4108 useless extension candidates. Maximal degree in co-relation 30083. Up to 3583 conditions per place. [2024-06-27 22:38:22,342 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 394 selfloop transitions, 127 changer transitions 0/529 dead transitions. [2024-06-27 22:38:22,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 529 transitions, 11184 flow [2024-06-27 22:38:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:22,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 22:38:22,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-27 22:38:22,343 INFO L175 Difference]: Start difference. First operand has 423 places, 505 transitions, 9940 flow. Second operand 11 states and 171 transitions. [2024-06-27 22:38:22,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 529 transitions, 11184 flow [2024-06-27 22:38:23,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 529 transitions, 10986 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 22:38:23,852 INFO L231 Difference]: Finished difference. Result has 428 places, 506 transitions, 10030 flow [2024-06-27 22:38:23,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9746, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10030, PETRI_PLACES=428, PETRI_TRANSITIONS=506} [2024-06-27 22:38:23,853 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2024-06-27 22:38:23,853 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 506 transitions, 10030 flow [2024-06-27 22:38:23,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:38:23,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:23,854 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 22:38:23,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 22:38:23,854 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:23,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:23,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1245467439, now seen corresponding path program 13 times [2024-06-27 22:38:23,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:23,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281912071] [2024-06-27 22:38:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:23,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:25,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:25,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281912071] [2024-06-27 22:38:25,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281912071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:25,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:25,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:38:25,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761716440] [2024-06-27 22:38:25,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:25,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:38:25,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:25,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:38:25,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:38:25,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:25,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 506 transitions, 10030 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:38:25,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:25,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:25,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:27,138 INFO L124 PetriNetUnfolderBase]: 2261/4421 cut-off events. [2024-06-27 22:38:27,139 INFO L125 PetriNetUnfolderBase]: For 262565/262565 co-relation queries the response was YES. [2024-06-27 22:38:27,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30491 conditions, 4421 events. 2261/4421 cut-off events. For 262565/262565 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 32069 event pairs, 686 based on Foata normal form. 2/4123 useless extension candidates. Maximal degree in co-relation 30309. Up to 3581 conditions per place. [2024-06-27 22:38:27,204 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 384 selfloop transitions, 141 changer transitions 0/533 dead transitions. [2024-06-27 22:38:27,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 533 transitions, 11548 flow [2024-06-27 22:38:27,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:27,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:27,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 22:38:27,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:38:27,205 INFO L175 Difference]: Start difference. First operand has 428 places, 506 transitions, 10030 flow. Second operand 11 states and 176 transitions. [2024-06-27 22:38:27,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 533 transitions, 11548 flow [2024-06-27 22:38:28,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 533 transitions, 11282 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 22:38:28,704 INFO L231 Difference]: Finished difference. Result has 430 places, 508 transitions, 10107 flow [2024-06-27 22:38:28,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9764, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10107, PETRI_PLACES=430, PETRI_TRANSITIONS=508} [2024-06-27 22:38:28,704 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 389 predicate places. [2024-06-27 22:38:28,705 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 508 transitions, 10107 flow [2024-06-27 22:38:28,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:38:28,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:28,705 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 22:38:28,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 22:38:28,705 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:28,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:28,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1245640605, now seen corresponding path program 20 times [2024-06-27 22:38:28,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:28,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171812592] [2024-06-27 22:38:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:28,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:30,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:30,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:30,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171812592] [2024-06-27 22:38:30,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171812592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:30,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:30,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:30,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566339947] [2024-06-27 22:38:30,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:30,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:30,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:30,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:30,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:30,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:30,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 508 transitions, 10107 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:30,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:30,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:30,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:31,682 INFO L124 PetriNetUnfolderBase]: 2258/4412 cut-off events. [2024-06-27 22:38:31,683 INFO L125 PetriNetUnfolderBase]: For 253791/253791 co-relation queries the response was YES. [2024-06-27 22:38:31,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30236 conditions, 4412 events. 2258/4412 cut-off events. For 253791/253791 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 32013 event pairs, 675 based on Foata normal form. 2/4115 useless extension candidates. Maximal degree in co-relation 30053. Up to 3590 conditions per place. [2024-06-27 22:38:31,749 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 396 selfloop transitions, 128 changer transitions 0/532 dead transitions. [2024-06-27 22:38:31,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 532 transitions, 11359 flow [2024-06-27 22:38:31,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:31,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:38:31,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 22:38:31,751 INFO L175 Difference]: Start difference. First operand has 430 places, 508 transitions, 10107 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:38:31,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 532 transitions, 11359 flow [2024-06-27 22:38:33,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 532 transitions, 11007 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 22:38:33,149 INFO L231 Difference]: Finished difference. Result has 431 places, 510 transitions, 10060 flow [2024-06-27 22:38:33,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9769, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10060, PETRI_PLACES=431, PETRI_TRANSITIONS=510} [2024-06-27 22:38:33,150 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 390 predicate places. [2024-06-27 22:38:33,150 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 510 transitions, 10060 flow [2024-06-27 22:38:33,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:33,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:33,151 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 22:38:33,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 22:38:33,151 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:33,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:33,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1103349705, now seen corresponding path program 14 times [2024-06-27 22:38:33,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:33,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255724887] [2024-06-27 22:38:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:33,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:34,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:34,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255724887] [2024-06-27 22:38:34,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255724887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:34,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:34,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:34,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426341052] [2024-06-27 22:38:34,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:34,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:34,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:34,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:34,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:35,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:35,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 510 transitions, 10060 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:35,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:35,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:35,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:36,548 INFO L124 PetriNetUnfolderBase]: 2288/4460 cut-off events. [2024-06-27 22:38:36,548 INFO L125 PetriNetUnfolderBase]: For 270966/270966 co-relation queries the response was YES. [2024-06-27 22:38:36,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30830 conditions, 4460 events. 2288/4460 cut-off events. For 270966/270966 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 32352 event pairs, 657 based on Foata normal form. 2/4156 useless extension candidates. Maximal degree in co-relation 30646. Up to 3366 conditions per place. [2024-06-27 22:38:36,617 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 343 selfloop transitions, 191 changer transitions 0/542 dead transitions. [2024-06-27 22:38:36,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 542 transitions, 11664 flow [2024-06-27 22:38:36,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:36,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:38:36,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 22:38:36,618 INFO L175 Difference]: Start difference. First operand has 431 places, 510 transitions, 10060 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:38:36,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 542 transitions, 11664 flow [2024-06-27 22:38:38,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 542 transitions, 11393 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:38,225 INFO L231 Difference]: Finished difference. Result has 435 places, 514 transitions, 10301 flow [2024-06-27 22:38:38,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9789, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10301, PETRI_PLACES=435, PETRI_TRANSITIONS=514} [2024-06-27 22:38:38,226 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 394 predicate places. [2024-06-27 22:38:38,226 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 514 transitions, 10301 flow [2024-06-27 22:38:38,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:38,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:38,226 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 22:38:38,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 22:38:38,227 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:38,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:38,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1103170215, now seen corresponding path program 15 times [2024-06-27 22:38:38,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:38,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071882081] [2024-06-27 22:38:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:38,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:39,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:39,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071882081] [2024-06-27 22:38:39,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071882081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:39,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:39,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:39,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141642347] [2024-06-27 22:38:39,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:39,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:39,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:39,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:39,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:39,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:39,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 514 transitions, 10301 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:39,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:39,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:39,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:41,343 INFO L124 PetriNetUnfolderBase]: 2284/4454 cut-off events. [2024-06-27 22:38:41,344 INFO L125 PetriNetUnfolderBase]: For 263599/263599 co-relation queries the response was YES. [2024-06-27 22:38:41,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30860 conditions, 4454 events. 2284/4454 cut-off events. For 263599/263599 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 32337 event pairs, 657 based on Foata normal form. 2/4150 useless extension candidates. Maximal degree in co-relation 30674. Up to 3404 conditions per place. [2024-06-27 22:38:41,406 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 340 selfloop transitions, 190 changer transitions 0/538 dead transitions. [2024-06-27 22:38:41,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 538 transitions, 11553 flow [2024-06-27 22:38:41,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:41,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:41,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 22:38:41,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-27 22:38:41,407 INFO L175 Difference]: Start difference. First operand has 435 places, 514 transitions, 10301 flow. Second operand 11 states and 175 transitions. [2024-06-27 22:38:41,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 538 transitions, 11553 flow [2024-06-27 22:38:42,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 538 transitions, 11139 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:42,942 INFO L231 Difference]: Finished difference. Result has 438 places, 514 transitions, 10275 flow [2024-06-27 22:38:42,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9887, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10275, PETRI_PLACES=438, PETRI_TRANSITIONS=514} [2024-06-27 22:38:42,942 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 397 predicate places. [2024-06-27 22:38:42,942 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 514 transitions, 10275 flow [2024-06-27 22:38:42,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:42,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:42,942 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 22:38:42,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 22:38:42,943 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:42,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:42,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2065063693, now seen corresponding path program 16 times [2024-06-27 22:38:42,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:42,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609383317] [2024-06-27 22:38:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:42,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:44,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:44,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609383317] [2024-06-27 22:38:44,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609383317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:44,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:44,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:38:44,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215352989] [2024-06-27 22:38:44,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:44,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:38:44,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:44,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:38:44,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:38:44,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:44,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 514 transitions, 10275 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:38:44,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:44,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:44,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:46,165 INFO L124 PetriNetUnfolderBase]: 2297/4465 cut-off events. [2024-06-27 22:38:46,166 INFO L125 PetriNetUnfolderBase]: For 267230/267230 co-relation queries the response was YES. [2024-06-27 22:38:46,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30934 conditions, 4465 events. 2297/4465 cut-off events. For 267230/267230 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 32255 event pairs, 670 based on Foata normal form. 2/4155 useless extension candidates. Maximal degree in co-relation 30747. Up to 3687 conditions per place. [2024-06-27 22:38:46,233 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 454 selfloop transitions, 78 changer transitions 0/540 dead transitions. [2024-06-27 22:38:46,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 540 transitions, 11589 flow [2024-06-27 22:38:46,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:46,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:46,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-27 22:38:46,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103194103194103 [2024-06-27 22:38:46,234 INFO L175 Difference]: Start difference. First operand has 438 places, 514 transitions, 10275 flow. Second operand 11 states and 167 transitions. [2024-06-27 22:38:46,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 540 transitions, 11589 flow [2024-06-27 22:38:47,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 540 transitions, 11186 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 22:38:47,806 INFO L231 Difference]: Finished difference. Result has 439 places, 516 transitions, 10093 flow [2024-06-27 22:38:47,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9872, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10093, PETRI_PLACES=439, PETRI_TRANSITIONS=516} [2024-06-27 22:38:47,807 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-27 22:38:47,807 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 516 transitions, 10093 flow [2024-06-27 22:38:47,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:38:47,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:47,807 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 22:38:47,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 22:38:47,807 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:47,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:47,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2065056997, now seen corresponding path program 21 times [2024-06-27 22:38:47,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:47,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960348800] [2024-06-27 22:38:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:47,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:49,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:49,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960348800] [2024-06-27 22:38:49,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960348800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:49,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:49,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:38:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270435883] [2024-06-27 22:38:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:49,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:38:49,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:49,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:38:49,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:38:49,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:49,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 516 transitions, 10093 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:38:49,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:49,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:49,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:50,893 INFO L124 PetriNetUnfolderBase]: 2314/4505 cut-off events. [2024-06-27 22:38:50,893 INFO L125 PetriNetUnfolderBase]: For 270650/270650 co-relation queries the response was YES. [2024-06-27 22:38:50,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30981 conditions, 4505 events. 2314/4505 cut-off events. For 270650/270650 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 32675 event pairs, 685 based on Foata normal form. 2/4193 useless extension candidates. Maximal degree in co-relation 30793. Up to 3822 conditions per place. [2024-06-27 22:38:50,964 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 484 selfloop transitions, 47 changer transitions 0/539 dead transitions. [2024-06-27 22:38:50,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 539 transitions, 11351 flow [2024-06-27 22:38:50,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:50,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-27 22:38:50,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004914004914005 [2024-06-27 22:38:50,965 INFO L175 Difference]: Start difference. First operand has 439 places, 516 transitions, 10093 flow. Second operand 11 states and 163 transitions. [2024-06-27 22:38:50,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 539 transitions, 11351 flow [2024-06-27 22:38:52,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 539 transitions, 11155 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 22:38:52,354 INFO L231 Difference]: Finished difference. Result has 441 places, 517 transitions, 10025 flow [2024-06-27 22:38:52,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9897, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10025, PETRI_PLACES=441, PETRI_TRANSITIONS=517} [2024-06-27 22:38:52,355 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 400 predicate places. [2024-06-27 22:38:52,355 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 517 transitions, 10025 flow [2024-06-27 22:38:52,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:38:52,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:52,355 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 22:38:52,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 22:38:52,355 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:52,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:52,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1246579663, now seen corresponding path program 2 times [2024-06-27 22:38:52,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:52,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140335948] [2024-06-27 22:38:52,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:52,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:54,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:54,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140335948] [2024-06-27 22:38:54,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140335948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:54,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:54,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:38:54,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93816961] [2024-06-27 22:38:54,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:54,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:38:54,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:54,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:38:54,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:38:54,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:54,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 517 transitions, 10025 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 22:38:54,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:54,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:54,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:56,122 INFO L124 PetriNetUnfolderBase]: 2331/4539 cut-off events. [2024-06-27 22:38:56,123 INFO L125 PetriNetUnfolderBase]: For 274567/274567 co-relation queries the response was YES. [2024-06-27 22:38:56,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31056 conditions, 4539 events. 2331/4539 cut-off events. For 274567/274567 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 33034 event pairs, 679 based on Foata normal form. 2/4222 useless extension candidates. Maximal degree in co-relation 30867. Up to 3809 conditions per place. [2024-06-27 22:38:56,190 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 481 selfloop transitions, 54 changer transitions 0/543 dead transitions. [2024-06-27 22:38:56,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 543 transitions, 11321 flow [2024-06-27 22:38:56,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:56,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:56,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-27 22:38:56,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103194103194103 [2024-06-27 22:38:56,191 INFO L175 Difference]: Start difference. First operand has 441 places, 517 transitions, 10025 flow. Second operand 11 states and 167 transitions. [2024-06-27 22:38:56,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 543 transitions, 11321 flow [2024-06-27 22:38:57,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 543 transitions, 11209 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 22:38:57,750 INFO L231 Difference]: Finished difference. Result has 443 places, 518 transitions, 10051 flow [2024-06-27 22:38:57,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9913, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10051, PETRI_PLACES=443, PETRI_TRANSITIONS=518} [2024-06-27 22:38:57,750 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-27 22:38:57,750 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 518 transitions, 10051 flow [2024-06-27 22:38:57,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 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 22:38:57,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:57,750 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 22:38:57,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 22:38:57,751 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:57,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:57,751 INFO L85 PathProgramCache]: Analyzing trace with hash 978669943, now seen corresponding path program 17 times [2024-06-27 22:38:57,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:57,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353870608] [2024-06-27 22:38:57,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:57,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:59,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:59,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353870608] [2024-06-27 22:38:59,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353870608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:59,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:59,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:38:59,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965296655] [2024-06-27 22:38:59,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:59,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:38:59,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:59,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:38:59,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:38:59,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:38:59,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 518 transitions, 10051 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:38:59,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:59,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:38:59,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:01,101 INFO L124 PetriNetUnfolderBase]: 2353/4577 cut-off events. [2024-06-27 22:39:01,101 INFO L125 PetriNetUnfolderBase]: For 286534/286534 co-relation queries the response was YES. [2024-06-27 22:39:01,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31533 conditions, 4577 events. 2353/4577 cut-off events. For 286534/286534 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 33314 event pairs, 691 based on Foata normal form. 2/4257 useless extension candidates. Maximal degree in co-relation 31343. Up to 3820 conditions per place. [2024-06-27 22:39:01,170 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 475 selfloop transitions, 62 changer transitions 0/545 dead transitions. [2024-06-27 22:39:01,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 545 transitions, 11649 flow [2024-06-27 22:39:01,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-27 22:39:01,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41277641277641275 [2024-06-27 22:39:01,171 INFO L175 Difference]: Start difference. First operand has 443 places, 518 transitions, 10051 flow. Second operand 11 states and 168 transitions. [2024-06-27 22:39:01,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 545 transitions, 11649 flow [2024-06-27 22:39:02,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 545 transitions, 11150 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-06-27 22:39:02,714 INFO L231 Difference]: Finished difference. Result has 440 places, 522 transitions, 9805 flow [2024-06-27 22:39:02,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9552, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9805, PETRI_PLACES=440, PETRI_TRANSITIONS=522} [2024-06-27 22:39:02,715 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 399 predicate places. [2024-06-27 22:39:02,715 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 522 transitions, 9805 flow [2024-06-27 22:39:02,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:02,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:02,716 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 22:39:02,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 22:39:02,716 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:02,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:02,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1245346721, now seen corresponding path program 22 times [2024-06-27 22:39:02,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:02,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159807509] [2024-06-27 22:39:02,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:02,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:04,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:04,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159807509] [2024-06-27 22:39:04,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159807509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:04,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:04,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:04,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212252106] [2024-06-27 22:39:04,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:04,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:04,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:04,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:04,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:04,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:04,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 522 transitions, 9805 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:04,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:04,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:04,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:05,827 INFO L124 PetriNetUnfolderBase]: 2370/4617 cut-off events. [2024-06-27 22:39:05,827 INFO L125 PetriNetUnfolderBase]: For 288271/288271 co-relation queries the response was YES. [2024-06-27 22:39:05,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31618 conditions, 4617 events. 2370/4617 cut-off events. For 288271/288271 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 33705 event pairs, 692 based on Foata normal form. 2/4295 useless extension candidates. Maximal degree in co-relation 31427. Up to 3890 conditions per place. [2024-06-27 22:39:05,895 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 485 selfloop transitions, 52 changer transitions 0/545 dead transitions. [2024-06-27 22:39:05,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 545 transitions, 11065 flow [2024-06-27 22:39:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:05,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 22:39:05,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 22:39:05,896 INFO L175 Difference]: Start difference. First operand has 440 places, 522 transitions, 9805 flow. Second operand 10 states and 155 transitions. [2024-06-27 22:39:05,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 545 transitions, 11065 flow [2024-06-27 22:39:07,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 545 transitions, 10996 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 22:39:07,685 INFO L231 Difference]: Finished difference. Result has 445 places, 523 transitions, 9876 flow [2024-06-27 22:39:07,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9736, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9876, PETRI_PLACES=445, PETRI_TRANSITIONS=523} [2024-06-27 22:39:07,685 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-27 22:39:07,686 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 523 transitions, 9876 flow [2024-06-27 22:39:07,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:07,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:07,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:07,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 22:39:07,686 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:07,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:07,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2071559371, now seen corresponding path program 3 times [2024-06-27 22:39:07,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:07,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905598338] [2024-06-27 22:39:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:07,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:09,532 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 22:39:09,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:09,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905598338] [2024-06-27 22:39:09,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905598338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:09,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:09,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:09,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772577230] [2024-06-27 22:39:09,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:09,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:09,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:09,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:09,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:09,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:09,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 523 transitions, 9876 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:09,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:09,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:09,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:11,063 INFO L124 PetriNetUnfolderBase]: 2387/4650 cut-off events. [2024-06-27 22:39:11,063 INFO L125 PetriNetUnfolderBase]: For 292546/292546 co-relation queries the response was YES. [2024-06-27 22:39:11,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31874 conditions, 4650 events. 2387/4650 cut-off events. For 292546/292546 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 33994 event pairs, 696 based on Foata normal form. 2/4324 useless extension candidates. Maximal degree in co-relation 31681. Up to 3937 conditions per place. [2024-06-27 22:39:11,133 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 503 selfloop transitions, 37 changer transitions 0/548 dead transitions. [2024-06-27 22:39:11,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 548 transitions, 11144 flow [2024-06-27 22:39:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:11,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-27 22:39:11,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 22:39:11,134 INFO L175 Difference]: Start difference. First operand has 445 places, 523 transitions, 9876 flow. Second operand 11 states and 165 transitions. [2024-06-27 22:39:11,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 548 transitions, 11144 flow [2024-06-27 22:39:12,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 548 transitions, 11020 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 22:39:12,805 INFO L231 Difference]: Finished difference. Result has 448 places, 524 transitions, 9857 flow [2024-06-27 22:39:12,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9752, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9857, PETRI_PLACES=448, PETRI_TRANSITIONS=524} [2024-06-27 22:39:12,805 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-27 22:39:12,805 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 524 transitions, 9857 flow [2024-06-27 22:39:12,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:12,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:12,806 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 22:39:12,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 22:39:12,806 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:12,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:12,806 INFO L85 PathProgramCache]: Analyzing trace with hash 978665107, now seen corresponding path program 23 times [2024-06-27 22:39:12,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:12,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903983713] [2024-06-27 22:39:12,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:12,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:14,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:14,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:14,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903983713] [2024-06-27 22:39:14,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903983713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:14,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:14,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:14,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062555217] [2024-06-27 22:39:14,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:14,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:14,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:14,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:14,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:14,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:14,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 524 transitions, 9857 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:14,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:14,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:14,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:16,206 INFO L124 PetriNetUnfolderBase]: 2404/4693 cut-off events. [2024-06-27 22:39:16,207 INFO L125 PetriNetUnfolderBase]: For 297104/297104 co-relation queries the response was YES. [2024-06-27 22:39:16,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32078 conditions, 4693 events. 2404/4693 cut-off events. For 297104/297104 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 34455 event pairs, 696 based on Foata normal form. 2/4369 useless extension candidates. Maximal degree in co-relation 31884. Up to 3851 conditions per place. [2024-06-27 22:39:16,274 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 489 selfloop transitions, 55 changer transitions 0/552 dead transitions. [2024-06-27 22:39:16,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 552 transitions, 11403 flow [2024-06-27 22:39:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:16,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 22:39:16,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-27 22:39:16,275 INFO L175 Difference]: Start difference. First operand has 448 places, 524 transitions, 9857 flow. Second operand 11 states and 169 transitions. [2024-06-27 22:39:16,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 552 transitions, 11403 flow [2024-06-27 22:39:17,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 552 transitions, 11279 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-27 22:39:17,946 INFO L231 Difference]: Finished difference. Result has 449 places, 525 transitions, 9879 flow [2024-06-27 22:39:17,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9733, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9879, PETRI_PLACES=449, PETRI_TRANSITIONS=525} [2024-06-27 22:39:17,946 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 408 predicate places. [2024-06-27 22:39:17,946 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 525 transitions, 9879 flow [2024-06-27 22:39:17,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:17,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:17,947 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 22:39:17,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 22:39:17,947 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:17,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:17,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1245173555, now seen corresponding path program 18 times [2024-06-27 22:39:17,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:17,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444208495] [2024-06-27 22:39:17,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:17,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:19,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:19,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444208495] [2024-06-27 22:39:19,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444208495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:19,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:19,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:19,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479143882] [2024-06-27 22:39:19,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:19,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:19,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:19,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:19,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:19,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:19,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 525 transitions, 9879 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:19,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:19,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:19,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:21,273 INFO L124 PetriNetUnfolderBase]: 2417/4715 cut-off events. [2024-06-27 22:39:21,273 INFO L125 PetriNetUnfolderBase]: For 301826/301826 co-relation queries the response was YES. [2024-06-27 22:39:21,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32260 conditions, 4715 events. 2417/4715 cut-off events. For 301826/301826 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 34627 event pairs, 707 based on Foata normal form. 2/4385 useless extension candidates. Maximal degree in co-relation 32065. Up to 3992 conditions per place. [2024-06-27 22:39:21,350 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 484 selfloop transitions, 56 changer transitions 0/548 dead transitions. [2024-06-27 22:39:21,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 548 transitions, 11195 flow [2024-06-27 22:39:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:21,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-27 22:39:21,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40294840294840295 [2024-06-27 22:39:21,351 INFO L175 Difference]: Start difference. First operand has 449 places, 525 transitions, 9879 flow. Second operand 11 states and 164 transitions. [2024-06-27 22:39:21,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 548 transitions, 11195 flow [2024-06-27 22:39:23,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 548 transitions, 10806 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-27 22:39:23,072 INFO L231 Difference]: Finished difference. Result has 448 places, 527 transitions, 9675 flow [2024-06-27 22:39:23,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9490, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9675, PETRI_PLACES=448, PETRI_TRANSITIONS=527} [2024-06-27 22:39:23,073 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-27 22:39:23,073 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 527 transitions, 9675 flow [2024-06-27 22:39:23,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:23,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:23,073 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 22:39:23,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 22:39:23,074 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:23,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1238680295, now seen corresponding path program 19 times [2024-06-27 22:39:23,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:23,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822448179] [2024-06-27 22:39:23,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:23,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:24,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:24,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822448179] [2024-06-27 22:39:24,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822448179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:24,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:24,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:24,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048708177] [2024-06-27 22:39:24,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:24,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:24,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:24,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:24,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:24,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:24,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 527 transitions, 9675 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:24,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:24,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:24,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:26,675 INFO L124 PetriNetUnfolderBase]: 2447/4755 cut-off events. [2024-06-27 22:39:26,676 INFO L125 PetriNetUnfolderBase]: For 305422/305422 co-relation queries the response was YES. [2024-06-27 22:39:26,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31853 conditions, 4755 events. 2447/4755 cut-off events. For 305422/305422 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 34835 event pairs, 696 based on Foata normal form. 2/4416 useless extension candidates. Maximal degree in co-relation 31660. Up to 3930 conditions per place. [2024-06-27 22:39:26,738 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 470 selfloop transitions, 79 changer transitions 0/557 dead transitions. [2024-06-27 22:39:26,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 557 transitions, 11080 flow [2024-06-27 22:39:26,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:26,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:26,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-27 22:39:26,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41277641277641275 [2024-06-27 22:39:26,740 INFO L175 Difference]: Start difference. First operand has 448 places, 527 transitions, 9675 flow. Second operand 11 states and 168 transitions. [2024-06-27 22:39:26,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 557 transitions, 11080 flow [2024-06-27 22:39:28,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 557 transitions, 10924 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 22:39:28,478 INFO L231 Difference]: Finished difference. Result has 450 places, 535 transitions, 9839 flow [2024-06-27 22:39:28,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9519, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9839, PETRI_PLACES=450, PETRI_TRANSITIONS=535} [2024-06-27 22:39:28,478 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 409 predicate places. [2024-06-27 22:39:28,478 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 535 transitions, 9839 flow [2024-06-27 22:39:28,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:28,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:28,479 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 22:39:28,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 22:39:28,479 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:28,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:28,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1238910935, now seen corresponding path program 20 times [2024-06-27 22:39:28,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:28,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806059147] [2024-06-27 22:39:28,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:28,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:29,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:29,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:29,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806059147] [2024-06-27 22:39:29,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806059147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:29,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:29,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:29,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497378022] [2024-06-27 22:39:29,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:29,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:29,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:29,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:29,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:30,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:30,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 535 transitions, 9839 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:30,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:30,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:30,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:31,582 INFO L124 PetriNetUnfolderBase]: 2460/4777 cut-off events. [2024-06-27 22:39:31,582 INFO L125 PetriNetUnfolderBase]: For 310600/310600 co-relation queries the response was YES. [2024-06-27 22:39:31,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32105 conditions, 4777 events. 2460/4777 cut-off events. For 310600/310600 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 35045 event pairs, 696 based on Foata normal form. 2/4437 useless extension candidates. Maximal degree in co-relation 31911. Up to 3949 conditions per place. [2024-06-27 22:39:31,658 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 478 selfloop transitions, 76 changer transitions 0/562 dead transitions. [2024-06-27 22:39:31,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 562 transitions, 11201 flow [2024-06-27 22:39:31,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:31,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:31,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 22:39:31,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-27 22:39:31,659 INFO L175 Difference]: Start difference. First operand has 450 places, 535 transitions, 9839 flow. Second operand 11 states and 170 transitions. [2024-06-27 22:39:31,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 562 transitions, 11201 flow [2024-06-27 22:39:33,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 562 transitions, 11028 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 22:39:33,531 INFO L231 Difference]: Finished difference. Result has 454 places, 537 transitions, 9891 flow [2024-06-27 22:39:33,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9666, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9891, PETRI_PLACES=454, PETRI_TRANSITIONS=537} [2024-06-27 22:39:33,532 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-27 22:39:33,532 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 537 transitions, 9891 flow [2024-06-27 22:39:33,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:33,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:33,533 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 22:39:33,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 22:39:33,533 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:33,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:33,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1690146677, now seen corresponding path program 4 times [2024-06-27 22:39:33,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:33,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856379269] [2024-06-27 22:39:33,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:33,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:35,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:35,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856379269] [2024-06-27 22:39:35,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856379269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:35,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:35,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:35,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596077350] [2024-06-27 22:39:35,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:35,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:35,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:35,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:35,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:35,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:35,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 537 transitions, 9891 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:35,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:35,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:35,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:36,957 INFO L124 PetriNetUnfolderBase]: 2477/4814 cut-off events. [2024-06-27 22:39:36,957 INFO L125 PetriNetUnfolderBase]: For 315204/315204 co-relation queries the response was YES. [2024-06-27 22:39:37,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32297 conditions, 4814 events. 2477/4814 cut-off events. For 315204/315204 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 35351 event pairs, 713 based on Foata normal form. 2/4471 useless extension candidates. Maximal degree in co-relation 32102. Up to 4109 conditions per place. [2024-06-27 22:39:37,034 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 527 selfloop transitions, 24 changer transitions 0/559 dead transitions. [2024-06-27 22:39:37,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 559 transitions, 11119 flow [2024-06-27 22:39:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:37,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:37,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-27 22:39:37,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3955773955773956 [2024-06-27 22:39:37,035 INFO L175 Difference]: Start difference. First operand has 454 places, 537 transitions, 9891 flow. Second operand 11 states and 161 transitions. [2024-06-27 22:39:37,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 559 transitions, 11119 flow [2024-06-27 22:39:39,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 559 transitions, 10894 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 22:39:39,174 INFO L231 Difference]: Finished difference. Result has 455 places, 538 transitions, 9748 flow [2024-06-27 22:39:39,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9666, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9748, PETRI_PLACES=455, PETRI_TRANSITIONS=538} [2024-06-27 22:39:39,174 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 414 predicate places. [2024-06-27 22:39:39,174 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 538 transitions, 9748 flow [2024-06-27 22:39:39,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:39,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:39,174 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 22:39:39,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 22:39:39,174 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:39,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:39,175 INFO L85 PathProgramCache]: Analyzing trace with hash 71757301, now seen corresponding path program 24 times [2024-06-27 22:39:39,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:39,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717589023] [2024-06-27 22:39:39,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:39,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:40,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:40,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717589023] [2024-06-27 22:39:40,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717589023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:40,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:40,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:40,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193661546] [2024-06-27 22:39:40,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:40,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:40,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:40,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:40,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:40,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:40,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 538 transitions, 9748 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:40,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:40,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:40,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:42,526 INFO L124 PetriNetUnfolderBase]: 2494/4856 cut-off events. [2024-06-27 22:39:42,526 INFO L125 PetriNetUnfolderBase]: For 318757/318757 co-relation queries the response was YES. [2024-06-27 22:39:42,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32354 conditions, 4856 events. 2494/4856 cut-off events. For 318757/318757 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 35783 event pairs, 720 based on Foata normal form. 2/4511 useless extension candidates. Maximal degree in co-relation 32158. Up to 4124 conditions per place. [2024-06-27 22:39:42,603 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 507 selfloop transitions, 45 changer transitions 0/560 dead transitions. [2024-06-27 22:39:42,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 560 transitions, 11024 flow [2024-06-27 22:39:42,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:42,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-27 22:39:42,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40294840294840295 [2024-06-27 22:39:42,604 INFO L175 Difference]: Start difference. First operand has 455 places, 538 transitions, 9748 flow. Second operand 11 states and 164 transitions. [2024-06-27 22:39:42,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 560 transitions, 11024 flow [2024-06-27 22:39:44,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 560 transitions, 10956 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 22:39:44,589 INFO L231 Difference]: Finished difference. Result has 457 places, 539 transitions, 9802 flow [2024-06-27 22:39:44,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9680, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9802, PETRI_PLACES=457, PETRI_TRANSITIONS=539} [2024-06-27 22:39:44,590 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 416 predicate places. [2024-06-27 22:39:44,590 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 539 transitions, 9802 flow [2024-06-27 22:39:44,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:44,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:44,590 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 22:39:44,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 22:39:44,590 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:44,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:44,591 INFO L85 PathProgramCache]: Analyzing trace with hash 2071313293, now seen corresponding path program 21 times [2024-06-27 22:39:44,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:44,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863172973] [2024-06-27 22:39:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:44,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:46,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:46,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863172973] [2024-06-27 22:39:46,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863172973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:46,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:46,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:46,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334457190] [2024-06-27 22:39:46,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:46,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:46,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:46,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:46,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:46,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:46,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 539 transitions, 9802 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:46,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:46,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:46,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:47,906 INFO L124 PetriNetUnfolderBase]: 2507/4875 cut-off events. [2024-06-27 22:39:47,906 INFO L125 PetriNetUnfolderBase]: For 324346/324346 co-relation queries the response was YES. [2024-06-27 22:39:47,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32526 conditions, 4875 events. 2507/4875 cut-off events. For 324346/324346 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 35920 event pairs, 702 based on Foata normal form. 2/4526 useless extension candidates. Maximal degree in co-relation 32329. Up to 3980 conditions per place. [2024-06-27 22:39:47,979 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 477 selfloop transitions, 83 changer transitions 0/568 dead transitions. [2024-06-27 22:39:47,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 568 transitions, 11438 flow [2024-06-27 22:39:47,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:47,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:47,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 22:39:47,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-27 22:39:47,980 INFO L175 Difference]: Start difference. First operand has 457 places, 539 transitions, 9802 flow. Second operand 11 states and 173 transitions. [2024-06-27 22:39:47,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 568 transitions, 11438 flow [2024-06-27 22:39:49,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 568 transitions, 11332 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 22:39:49,867 INFO L231 Difference]: Finished difference. Result has 459 places, 541 transitions, 9939 flow [2024-06-27 22:39:49,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9696, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9939, PETRI_PLACES=459, PETRI_TRANSITIONS=541} [2024-06-27 22:39:49,868 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 418 predicate places. [2024-06-27 22:39:49,869 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 541 transitions, 9939 flow [2024-06-27 22:39:49,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:49,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:49,869 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 22:39:49,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 22:39:49,869 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:49,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:49,870 INFO L85 PathProgramCache]: Analyzing trace with hash -2003191745, now seen corresponding path program 22 times [2024-06-27 22:39:49,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:49,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442305994] [2024-06-27 22:39:49,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:49,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:51,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:51,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442305994] [2024-06-27 22:39:51,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442305994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:51,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:51,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:51,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609134906] [2024-06-27 22:39:51,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:51,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:51,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:51,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:51,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:51,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:51,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 541 transitions, 9939 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:51,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:51,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:51,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:53,215 INFO L124 PetriNetUnfolderBase]: 2537/4923 cut-off events. [2024-06-27 22:39:53,215 INFO L125 PetriNetUnfolderBase]: For 330168/330168 co-relation queries the response was YES. [2024-06-27 22:39:53,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33062 conditions, 4923 events. 2537/4923 cut-off events. For 330168/330168 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 36263 event pairs, 726 based on Foata normal form. 2/4570 useless extension candidates. Maximal degree in co-relation 32864. Up to 4154 conditions per place. [2024-06-27 22:39:53,292 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 510 selfloop transitions, 53 changer transitions 0/571 dead transitions. [2024-06-27 22:39:53,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 571 transitions, 11376 flow [2024-06-27 22:39:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:53,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:53,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-27 22:39:53,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40294840294840295 [2024-06-27 22:39:53,293 INFO L175 Difference]: Start difference. First operand has 459 places, 541 transitions, 9939 flow. Second operand 11 states and 164 transitions. [2024-06-27 22:39:53,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 571 transitions, 11376 flow [2024-06-27 22:39:55,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 571 transitions, 11194 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 22:39:55,402 INFO L231 Difference]: Finished difference. Result has 462 places, 549 transitions, 10045 flow [2024-06-27 22:39:55,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9763, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10045, PETRI_PLACES=462, PETRI_TRANSITIONS=549} [2024-06-27 22:39:55,403 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 421 predicate places. [2024-06-27 22:39:55,403 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 549 transitions, 10045 flow [2024-06-27 22:39:55,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:39:55,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:55,403 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 22:39:55,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 22:39:55,404 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:55,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:55,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1690155605, now seen corresponding path program 23 times [2024-06-27 22:39:55,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:55,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177074838] [2024-06-27 22:39:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:55,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:56,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:56,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177074838] [2024-06-27 22:39:56,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177074838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:56,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:56,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:56,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158696710] [2024-06-27 22:39:56,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:56,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:56,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:56,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:56,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:57,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:39:57,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 549 transitions, 10045 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:57,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:57,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:39:57,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:58,585 INFO L124 PetriNetUnfolderBase]: 2530/4911 cut-off events. [2024-06-27 22:39:58,585 INFO L125 PetriNetUnfolderBase]: For 316623/316623 co-relation queries the response was YES. [2024-06-27 22:39:58,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32264 conditions, 4911 events. 2530/4911 cut-off events. For 316623/316623 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 36171 event pairs, 734 based on Foata normal form. 4/4559 useless extension candidates. Maximal degree in co-relation 32065. Up to 4174 conditions per place. [2024-06-27 22:39:58,659 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 523 selfloop transitions, 40 changer transitions 0/571 dead transitions. [2024-06-27 22:39:58,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 571 transitions, 11531 flow [2024-06-27 22:39:58,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:58,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:58,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-27 22:39:58,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 22:39:58,660 INFO L175 Difference]: Start difference. First operand has 462 places, 549 transitions, 10045 flow. Second operand 11 states and 165 transitions. [2024-06-27 22:39:58,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 571 transitions, 11531 flow [2024-06-27 22:40:00,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 571 transitions, 11374 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 22:40:00,659 INFO L231 Difference]: Finished difference. Result has 465 places, 549 transitions, 9983 flow [2024-06-27 22:40:00,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9888, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9983, PETRI_PLACES=465, PETRI_TRANSITIONS=549} [2024-06-27 22:40:00,659 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 424 predicate places. [2024-06-27 22:40:00,660 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 549 transitions, 9983 flow [2024-06-27 22:40:00,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:00,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:00,660 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 22:40:00,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 22:40:00,660 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:00,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:00,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1679133927, now seen corresponding path program 1 times [2024-06-27 22:40:00,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:00,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567899311] [2024-06-27 22:40:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:00,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:02,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:02,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567899311] [2024-06-27 22:40:02,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567899311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:02,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:02,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:02,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338213172] [2024-06-27 22:40:02,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:02,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:02,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:02,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:02,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:02,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:40:02,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 549 transitions, 9983 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:02,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:02,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:40:02,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:03,556 INFO L124 PetriNetUnfolderBase]: 2527/4907 cut-off events. [2024-06-27 22:40:03,556 INFO L125 PetriNetUnfolderBase]: For 285460/285460 co-relation queries the response was YES. [2024-06-27 22:40:03,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31951 conditions, 4907 events. 2527/4907 cut-off events. For 285460/285460 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 36155 event pairs, 724 based on Foata normal form. 1/4552 useless extension candidates. Maximal degree in co-relation 31751. Up to 4195 conditions per place. [2024-06-27 22:40:03,631 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 524 selfloop transitions, 33 changer transitions 0/565 dead transitions. [2024-06-27 22:40:03,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 565 transitions, 11175 flow [2024-06-27 22:40:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:03,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:03,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-27 22:40:03,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972972972972973 [2024-06-27 22:40:03,632 INFO L175 Difference]: Start difference. First operand has 465 places, 549 transitions, 9983 flow. Second operand 10 states and 147 transitions. [2024-06-27 22:40:03,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 565 transitions, 11175 flow [2024-06-27 22:40:05,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 565 transitions, 10969 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-27 22:40:05,728 INFO L231 Difference]: Finished difference. Result has 468 places, 549 transitions, 9861 flow [2024-06-27 22:40:05,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9777, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9861, PETRI_PLACES=468, PETRI_TRANSITIONS=549} [2024-06-27 22:40:05,728 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 427 predicate places. [2024-06-27 22:40:05,728 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 549 transitions, 9861 flow [2024-06-27 22:40:05,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:05,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:05,729 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 22:40:05,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 22:40:05,729 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:05,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:05,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1017272405, now seen corresponding path program 24 times [2024-06-27 22:40:05,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:05,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740951321] [2024-06-27 22:40:05,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:05,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:07,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:07,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740951321] [2024-06-27 22:40:07,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740951321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:07,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:07,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:07,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558500380] [2024-06-27 22:40:07,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:07,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:07,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:07,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:07,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:07,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:40:07,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 549 transitions, 9861 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:07,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:07,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:40:07,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:08,953 INFO L124 PetriNetUnfolderBase]: 2523/4903 cut-off events. [2024-06-27 22:40:08,953 INFO L125 PetriNetUnfolderBase]: For 278241/278241 co-relation queries the response was YES. [2024-06-27 22:40:09,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31433 conditions, 4903 events. 2523/4903 cut-off events. For 278241/278241 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 36108 event pairs, 722 based on Foata normal form. 2/4550 useless extension candidates. Maximal degree in co-relation 31231. Up to 4161 conditions per place. [2024-06-27 22:40:09,026 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 521 selfloop transitions, 42 changer transitions 0/571 dead transitions. [2024-06-27 22:40:09,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 571 transitions, 11121 flow [2024-06-27 22:40:09,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:09,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:09,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 22:40:09,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-27 22:40:09,027 INFO L175 Difference]: Start difference. First operand has 468 places, 549 transitions, 9861 flow. Second operand 10 states and 157 transitions. [2024-06-27 22:40:09,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 571 transitions, 11121 flow [2024-06-27 22:40:10,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 571 transitions, 11015 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 22:40:10,862 INFO L231 Difference]: Finished difference. Result has 469 places, 549 transitions, 9844 flow [2024-06-27 22:40:10,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9755, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9844, PETRI_PLACES=469, PETRI_TRANSITIONS=549} [2024-06-27 22:40:10,862 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 428 predicate places. [2024-06-27 22:40:10,862 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 549 transitions, 9844 flow [2024-06-27 22:40:10,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:10,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:10,863 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 22:40:10,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 22:40:10,863 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:10,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:10,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2003198441, now seen corresponding path program 25 times [2024-06-27 22:40:10,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:10,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998559885] [2024-06-27 22:40:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:10,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:12,324 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 22:40:12,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:12,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998559885] [2024-06-27 22:40:12,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998559885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:12,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:12,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:40:12,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25227147] [2024-06-27 22:40:12,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:12,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:40:12,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:12,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:40:12,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:40:12,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:40:12,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 549 transitions, 9844 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:40:12,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:12,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:40:12,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:13,986 INFO L124 PetriNetUnfolderBase]: 2520/4896 cut-off events. [2024-06-27 22:40:13,987 INFO L125 PetriNetUnfolderBase]: For 262945/262945 co-relation queries the response was YES. [2024-06-27 22:40:14,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31088 conditions, 4896 events. 2520/4896 cut-off events. For 262945/262945 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 36057 event pairs, 733 based on Foata normal form. 2/4543 useless extension candidates. Maximal degree in co-relation 30885. Up to 4193 conditions per place. [2024-06-27 22:40:14,061 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 537 selfloop transitions, 24 changer transitions 0/569 dead transitions. [2024-06-27 22:40:14,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 569 transitions, 11078 flow [2024-06-27 22:40:14,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:14,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:14,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-27 22:40:14,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931203931203931 [2024-06-27 22:40:14,062 INFO L175 Difference]: Start difference. First operand has 469 places, 549 transitions, 9844 flow. Second operand 11 states and 160 transitions. [2024-06-27 22:40:14,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 569 transitions, 11078 flow [2024-06-27 22:40:16,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 569 transitions, 10642 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 22:40:16,069 INFO L231 Difference]: Finished difference. Result has 470 places, 549 transitions, 9460 flow [2024-06-27 22:40:16,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9408, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9460, PETRI_PLACES=470, PETRI_TRANSITIONS=549} [2024-06-27 22:40:16,070 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 429 predicate places. [2024-06-27 22:40:16,070 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 549 transitions, 9460 flow [2024-06-27 22:40:16,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:40:16,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:16,070 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 22:40:16,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 22:40:16,070 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:16,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:16,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1678748597, now seen corresponding path program 5 times [2024-06-27 22:40:16,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:16,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718134773] [2024-06-27 22:40:16,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:16,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:17,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:17,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:17,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718134773] [2024-06-27 22:40:17,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718134773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:17,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:17,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:40:17,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143089414] [2024-06-27 22:40:17,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:17,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:40:17,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:17,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:40:17,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:40:17,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:40:17,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 549 transitions, 9460 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:40:17,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:17,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:40:17,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:19,133 INFO L124 PetriNetUnfolderBase]: 2537/4925 cut-off events. [2024-06-27 22:40:19,133 INFO L125 PetriNetUnfolderBase]: For 263707/263707 co-relation queries the response was YES. [2024-06-27 22:40:19,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31031 conditions, 4925 events. 2537/4925 cut-off events. For 263707/263707 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 36312 event pairs, 718 based on Foata normal form. 2/4570 useless extension candidates. Maximal degree in co-relation 30827. Up to 4211 conditions per place. [2024-06-27 22:40:19,207 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 548 selfloop transitions, 18 changer transitions 0/574 dead transitions. [2024-06-27 22:40:19,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 574 transitions, 10738 flow [2024-06-27 22:40:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 22:40:19,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-27 22:40:19,208 INFO L175 Difference]: Start difference. First operand has 470 places, 549 transitions, 9460 flow. Second operand 10 states and 153 transitions. [2024-06-27 22:40:19,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 574 transitions, 10738 flow [2024-06-27 22:40:21,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 574 transitions, 10676 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 22:40:21,080 INFO L231 Difference]: Finished difference. Result has 471 places, 552 transitions, 9497 flow [2024-06-27 22:40:21,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9398, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9497, PETRI_PLACES=471, PETRI_TRANSITIONS=552} [2024-06-27 22:40:21,080 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 430 predicate places. [2024-06-27 22:40:21,081 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 552 transitions, 9497 flow [2024-06-27 22:40:21,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:40:21,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:21,081 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 22:40:21,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 22:40:21,081 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:21,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:21,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1205800859, now seen corresponding path program 6 times [2024-06-27 22:40:21,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:21,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7686609] [2024-06-27 22:40:21,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:21,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:23,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:23,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7686609] [2024-06-27 22:40:23,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7686609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:23,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:23,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:40:23,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288412336] [2024-06-27 22:40:23,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:23,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:40:23,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:23,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:40:23,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:40:23,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:40:23,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 552 transitions, 9497 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:40:23,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:23,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:40:23,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:24,657 INFO L124 PetriNetUnfolderBase]: 2554/4965 cut-off events. [2024-06-27 22:40:24,657 INFO L125 PetriNetUnfolderBase]: For 269955/269955 co-relation queries the response was YES. [2024-06-27 22:40:24,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31471 conditions, 4965 events. 2554/4965 cut-off events. For 269955/269955 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 36698 event pairs, 734 based on Foata normal form. 2/4608 useless extension candidates. Maximal degree in co-relation 31265. Up to 4238 conditions per place. [2024-06-27 22:40:24,733 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 539 selfloop transitions, 28 changer transitions 0/575 dead transitions. [2024-06-27 22:40:24,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 575 transitions, 10787 flow [2024-06-27 22:40:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:24,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:24,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 22:40:24,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-27 22:40:24,734 INFO L175 Difference]: Start difference. First operand has 471 places, 552 transitions, 9497 flow. Second operand 10 states and 154 transitions. [2024-06-27 22:40:24,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 575 transitions, 10787 flow [2024-06-27 22:40:26,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 575 transitions, 10714 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 22:40:26,484 INFO L231 Difference]: Finished difference. Result has 474 places, 553 transitions, 9517 flow [2024-06-27 22:40:26,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9424, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9517, PETRI_PLACES=474, PETRI_TRANSITIONS=553} [2024-06-27 22:40:26,484 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 433 predicate places. [2024-06-27 22:40:26,485 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 553 transitions, 9517 flow [2024-06-27 22:40:26,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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 22:40:26,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:26,485 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 22:40:26,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 22:40:26,485 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:26,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:26,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1205791931, now seen corresponding path program 25 times [2024-06-27 22:40:26,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:26,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650231314] [2024-06-27 22:40:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:26,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:28,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:28,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650231314] [2024-06-27 22:40:28,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650231314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:28,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:28,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:28,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116828250] [2024-06-27 22:40:28,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:28,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:28,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:28,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:28,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:28,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:40:28,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 553 transitions, 9517 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:28,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:28,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:40:28,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:30,012 INFO L124 PetriNetUnfolderBase]: 2567/4986 cut-off events. [2024-06-27 22:40:30,012 INFO L125 PetriNetUnfolderBase]: For 273924/273924 co-relation queries the response was YES. [2024-06-27 22:40:30,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31619 conditions, 4986 events. 2567/4986 cut-off events. For 273924/273924 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 36866 event pairs, 735 based on Foata normal form. 2/4627 useless extension candidates. Maximal degree in co-relation 31412. Up to 4209 conditions per place. [2024-06-27 22:40:30,080 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 518 selfloop transitions, 49 changer transitions 0/575 dead transitions. [2024-06-27 22:40:30,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 575 transitions, 10837 flow [2024-06-27 22:40:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:30,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 22:40:30,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-27 22:40:30,081 INFO L175 Difference]: Start difference. First operand has 474 places, 553 transitions, 9517 flow. Second operand 10 states and 156 transitions. [2024-06-27 22:40:30,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 575 transitions, 10837 flow [2024-06-27 22:40:31,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 575 transitions, 10675 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 22:40:31,764 INFO L231 Difference]: Finished difference. Result has 474 places, 555 transitions, 9534 flow [2024-06-27 22:40:31,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9355, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9534, PETRI_PLACES=474, PETRI_TRANSITIONS=555} [2024-06-27 22:40:31,765 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 433 predicate places. [2024-06-27 22:40:31,765 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 555 transitions, 9534 flow [2024-06-27 22:40:31,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:31,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:31,766 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 22:40:31,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 22:40:31,766 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:31,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:31,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2116092427, now seen corresponding path program 26 times [2024-06-27 22:40:31,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:31,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561715401] [2024-06-27 22:40:31,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:31,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:33,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:33,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561715401] [2024-06-27 22:40:33,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561715401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:33,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:33,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:33,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236616814] [2024-06-27 22:40:33,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:33,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:33,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:33,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:33,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:33,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:40:33,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 555 transitions, 9534 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:33,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:33,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:40:33,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:34,641 INFO L124 PetriNetUnfolderBase]: 2079/4246 cut-off events. [2024-06-27 22:40:34,642 INFO L125 PetriNetUnfolderBase]: For 272754/272836 co-relation queries the response was YES. [2024-06-27 22:40:34,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26896 conditions, 4246 events. 2079/4246 cut-off events. For 272754/272836 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 32487 event pairs, 463 based on Foata normal form. 48/3979 useless extension candidates. Maximal degree in co-relation 26690. Up to 1775 conditions per place. [2024-06-27 22:40:34,703 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 371 selfloop transitions, 203 changer transitions 0/587 dead transitions. [2024-06-27 22:40:34,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 587 transitions, 11108 flow [2024-06-27 22:40:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:40:34,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:40:34,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:40:34,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984984984984985 [2024-06-27 22:40:34,704 INFO L175 Difference]: Start difference. First operand has 474 places, 555 transitions, 9534 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:40:34,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 587 transitions, 11108 flow [2024-06-27 22:40:36,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 587 transitions, 10702 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 22:40:36,255 INFO L231 Difference]: Finished difference. Result has 474 places, 556 transitions, 9550 flow [2024-06-27 22:40:36,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9128, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9550, PETRI_PLACES=474, PETRI_TRANSITIONS=556} [2024-06-27 22:40:36,256 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 433 predicate places. [2024-06-27 22:40:36,256 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 556 transitions, 9550 flow [2024-06-27 22:40:36,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:36,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:36,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:36,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 22:40:36,256 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:36,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:36,256 INFO L85 PathProgramCache]: Analyzing trace with hash 316754571, now seen corresponding path program 27 times [2024-06-27 22:40:36,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:36,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987533707] [2024-06-27 22:40:36,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:36,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:37,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:37,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987533707] [2024-06-27 22:40:37,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987533707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:37,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:37,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:37,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889721839] [2024-06-27 22:40:37,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:37,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:37,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:37,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:37,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:37,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:40:37,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 556 transitions, 9550 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:37,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:37,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:40:37,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:39,153 INFO L124 PetriNetUnfolderBase]: 2110/4368 cut-off events. [2024-06-27 22:40:39,154 INFO L125 PetriNetUnfolderBase]: For 293834/293916 co-relation queries the response was YES. [2024-06-27 22:40:39,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27972 conditions, 4368 events. 2110/4368 cut-off events. For 293834/293916 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 33916 event pairs, 579 based on Foata normal form. 51/4087 useless extension candidates. Maximal degree in co-relation 27766. Up to 3047 conditions per place. [2024-06-27 22:40:39,215 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 391 selfloop transitions, 177 changer transitions 0/581 dead transitions. [2024-06-27 22:40:39,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 581 transitions, 11076 flow [2024-06-27 22:40:39,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:40:39,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:40:39,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:40:39,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 22:40:39,216 INFO L175 Difference]: Start difference. First operand has 474 places, 556 transitions, 9550 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:40:39,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 581 transitions, 11076 flow [2024-06-27 22:40:41,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 581 transitions, 10729 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 22:40:41,071 INFO L231 Difference]: Finished difference. Result has 476 places, 558 transitions, 9591 flow [2024-06-27 22:40:41,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9211, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9591, PETRI_PLACES=476, PETRI_TRANSITIONS=558} [2024-06-27 22:40:41,071 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 435 predicate places. [2024-06-27 22:40:41,071 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 558 transitions, 9591 flow [2024-06-27 22:40:41,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:41,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:41,072 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 22:40:41,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 22:40:41,072 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:41,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:41,072 INFO L85 PathProgramCache]: Analyzing trace with hash 316639251, now seen corresponding path program 28 times [2024-06-27 22:40:41,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:41,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985269441] [2024-06-27 22:40:41,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:41,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:42,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:42,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985269441] [2024-06-27 22:40:42,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985269441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:42,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:42,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:42,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392588222] [2024-06-27 22:40:42,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:42,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:42,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:42,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:42,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:42,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:40:42,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 558 transitions, 9591 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:42,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:42,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:40:42,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:43,979 INFO L124 PetriNetUnfolderBase]: 2124/4403 cut-off events. [2024-06-27 22:40:43,979 INFO L125 PetriNetUnfolderBase]: For 294272/294354 co-relation queries the response was YES. [2024-06-27 22:40:44,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27883 conditions, 4403 events. 2124/4403 cut-off events. For 294272/294354 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 34266 event pairs, 558 based on Foata normal form. 51/4119 useless extension candidates. Maximal degree in co-relation 27677. Up to 2935 conditions per place. [2024-06-27 22:40:44,046 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 394 selfloop transitions, 179 changer transitions 0/586 dead transitions. [2024-06-27 22:40:44,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 586 transitions, 11140 flow [2024-06-27 22:40:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:40:44,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:40:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:40:44,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-27 22:40:44,047 INFO L175 Difference]: Start difference. First operand has 476 places, 558 transitions, 9591 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:40:44,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 586 transitions, 11140 flow [2024-06-27 22:40:45,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 586 transitions, 10895 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 22:40:45,755 INFO L231 Difference]: Finished difference. Result has 479 places, 559 transitions, 9725 flow [2024-06-27 22:40:45,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9348, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9725, PETRI_PLACES=479, PETRI_TRANSITIONS=559} [2024-06-27 22:40:45,755 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-27 22:40:45,755 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 559 transitions, 9725 flow [2024-06-27 22:40:45,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:45,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:45,756 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 22:40:45,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 22:40:45,756 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:45,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:45,756 INFO L85 PathProgramCache]: Analyzing trace with hash 316759221, now seen corresponding path program 29 times [2024-06-27 22:40:45,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:45,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163162995] [2024-06-27 22:40:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:45,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:47,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:47,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163162995] [2024-06-27 22:40:47,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163162995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:47,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:47,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:47,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918658834] [2024-06-27 22:40:47,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:47,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:47,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:47,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:47,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:47,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:40:47,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 559 transitions, 9725 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:47,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:47,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:40:47,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:48,659 INFO L124 PetriNetUnfolderBase]: 2121/4414 cut-off events. [2024-06-27 22:40:48,659 INFO L125 PetriNetUnfolderBase]: For 276027/276109 co-relation queries the response was YES. [2024-06-27 22:40:48,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27995 conditions, 4414 events. 2121/4414 cut-off events. For 276027/276109 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 34503 event pairs, 605 based on Foata normal form. 51/4124 useless extension candidates. Maximal degree in co-relation 27788. Up to 3157 conditions per place. [2024-06-27 22:40:48,729 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 389 selfloop transitions, 175 changer transitions 0/577 dead transitions. [2024-06-27 22:40:48,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 577 transitions, 10917 flow [2024-06-27 22:40:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:40:48,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:40:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:40:48,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 22:40:48,730 INFO L175 Difference]: Start difference. First operand has 479 places, 559 transitions, 9725 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:40:48,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 577 transitions, 10917 flow [2024-06-27 22:40:50,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 577 transitions, 10553 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:40:50,511 INFO L231 Difference]: Finished difference. Result has 480 places, 559 transitions, 9717 flow [2024-06-27 22:40:50,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9361, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9717, PETRI_PLACES=480, PETRI_TRANSITIONS=559} [2024-06-27 22:40:50,512 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 439 predicate places. [2024-06-27 22:40:50,512 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 559 transitions, 9717 flow [2024-06-27 22:40:50,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:50,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:50,512 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 22:40:50,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 22:40:50,513 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:50,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:50,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2120662263, now seen corresponding path program 26 times [2024-06-27 22:40:50,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:50,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564478515] [2024-06-27 22:40:50,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:50,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:52,163 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 22:40:52,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:52,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564478515] [2024-06-27 22:40:52,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564478515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:52,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:52,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:52,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297274434] [2024-06-27 22:40:52,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:52,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:52,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:52,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:52,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:52,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:40:52,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 559 transitions, 9717 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:52,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:52,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:40:52,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:53,604 INFO L124 PetriNetUnfolderBase]: 2130/4419 cut-off events. [2024-06-27 22:40:53,605 INFO L125 PetriNetUnfolderBase]: For 275592/275674 co-relation queries the response was YES. [2024-06-27 22:40:53,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27986 conditions, 4419 events. 2130/4419 cut-off events. For 275592/275674 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 34470 event pairs, 590 based on Foata normal form. 24/4099 useless extension candidates. Maximal degree in co-relation 27779. Up to 2618 conditions per place. [2024-06-27 22:40:53,679 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 283 selfloop transitions, 283 changer transitions 0/579 dead transitions. [2024-06-27 22:40:53,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 579 transitions, 11211 flow [2024-06-27 22:40:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:40:53,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:40:53,680 INFO L175 Difference]: Start difference. First operand has 480 places, 559 transitions, 9717 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:40:53,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 579 transitions, 11211 flow [2024-06-27 22:40:55,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 579 transitions, 10851 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 22:40:55,601 INFO L231 Difference]: Finished difference. Result has 481 places, 561 transitions, 9963 flow [2024-06-27 22:40:55,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9359, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9963, PETRI_PLACES=481, PETRI_TRANSITIONS=561} [2024-06-27 22:40:55,602 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 440 predicate places. [2024-06-27 22:40:55,602 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 561 transitions, 9963 flow [2024-06-27 22:40:55,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:55,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:55,602 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 22:40:55,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 22:40:55,602 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:55,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:55,602 INFO L85 PathProgramCache]: Analyzing trace with hash 430500885, now seen corresponding path program 27 times [2024-06-27 22:40:55,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:55,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798908182] [2024-06-27 22:40:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:55,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:57,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:57,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798908182] [2024-06-27 22:40:57,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798908182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:57,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:57,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:40:57,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503424713] [2024-06-27 22:40:57,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:57,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:40:57,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:57,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:40:57,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:40:57,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:40:57,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 561 transitions, 9963 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 22:40:57,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:57,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:40:57,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:58,977 INFO L124 PetriNetUnfolderBase]: 2126/4429 cut-off events. [2024-06-27 22:40:58,978 INFO L125 PetriNetUnfolderBase]: For 259486/259590 co-relation queries the response was YES. [2024-06-27 22:40:59,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28135 conditions, 4429 events. 2126/4429 cut-off events. For 259486/259590 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 34649 event pairs, 572 based on Foata normal form. 40/4132 useless extension candidates. Maximal degree in co-relation 27927. Up to 3116 conditions per place. [2024-06-27 22:40:59,047 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 353 selfloop transitions, 209 changer transitions 0/575 dead transitions. [2024-06-27 22:40:59,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 575 transitions, 11131 flow [2024-06-27 22:40:59,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:59,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:59,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:40:59,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:40:59,048 INFO L175 Difference]: Start difference. First operand has 481 places, 561 transitions, 9963 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:40:59,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 575 transitions, 11131 flow [2024-06-27 22:41:00,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 575 transitions, 10590 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 22:41:00,683 INFO L231 Difference]: Finished difference. Result has 482 places, 561 transitions, 9851 flow [2024-06-27 22:41:00,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9422, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9851, PETRI_PLACES=482, PETRI_TRANSITIONS=561} [2024-06-27 22:41:00,684 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-27 22:41:00,684 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 561 transitions, 9851 flow [2024-06-27 22:41:00,684 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 22:41:00,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:00,684 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 22:41:00,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 22:41:00,684 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:00,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:00,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2141966693, now seen corresponding path program 28 times [2024-06-27 22:41:00,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:00,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774134883] [2024-06-27 22:41:00,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:00,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:02,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:02,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774134883] [2024-06-27 22:41:02,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774134883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:02,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:02,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:02,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228958645] [2024-06-27 22:41:02,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:02,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:02,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:02,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:02,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:02,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:41:02,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 561 transitions, 9851 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:02,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:02,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:41:02,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:03,733 INFO L124 PetriNetUnfolderBase]: 2137/4443 cut-off events. [2024-06-27 22:41:03,733 INFO L125 PetriNetUnfolderBase]: For 256247/256328 co-relation queries the response was YES. [2024-06-27 22:41:03,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28113 conditions, 4443 events. 2137/4443 cut-off events. For 256247/256328 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 34717 event pairs, 574 based on Foata normal form. 28/4131 useless extension candidates. Maximal degree in co-relation 27906. Up to 3099 conditions per place. [2024-06-27 22:41:03,805 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 349 selfloop transitions, 216 changer transitions 0/578 dead transitions. [2024-06-27 22:41:03,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 578 transitions, 11059 flow [2024-06-27 22:41:03,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:03,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:41:03,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:41:03,806 INFO L175 Difference]: Start difference. First operand has 482 places, 561 transitions, 9851 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:41:03,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 578 transitions, 11059 flow [2024-06-27 22:41:05,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 578 transitions, 10234 flow, removed 27 selfloop flow, removed 12 redundant places. [2024-06-27 22:41:05,482 INFO L231 Difference]: Finished difference. Result has 480 places, 563 transitions, 9498 flow [2024-06-27 22:41:05,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9026, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9498, PETRI_PLACES=480, PETRI_TRANSITIONS=563} [2024-06-27 22:41:05,483 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 439 predicate places. [2024-06-27 22:41:05,483 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 563 transitions, 9498 flow [2024-06-27 22:41:05,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:05,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:05,483 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 22:41:05,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 22:41:05,484 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:05,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:05,484 INFO L85 PathProgramCache]: Analyzing trace with hash 571425291, now seen corresponding path program 30 times [2024-06-27 22:41:05,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:05,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229620798] [2024-06-27 22:41:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:05,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:07,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:07,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229620798] [2024-06-27 22:41:07,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229620798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:07,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:07,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:07,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33518104] [2024-06-27 22:41:07,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:07,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:07,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:07,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:07,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:07,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:41:07,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 563 transitions, 9498 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:07,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:07,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:41:07,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:08,449 INFO L124 PetriNetUnfolderBase]: 2151/4474 cut-off events. [2024-06-27 22:41:08,449 INFO L125 PetriNetUnfolderBase]: For 253496/253570 co-relation queries the response was YES. [2024-06-27 22:41:08,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27720 conditions, 4474 events. 2151/4474 cut-off events. For 253496/253570 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 35013 event pairs, 602 based on Foata normal form. 22/4149 useless extension candidates. Maximal degree in co-relation 27515. Up to 3389 conditions per place. [2024-06-27 22:41:08,519 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 429 selfloop transitions, 137 changer transitions 0/579 dead transitions. [2024-06-27 22:41:08,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 579 transitions, 10695 flow [2024-06-27 22:41:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:41:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:41:08,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:41:08,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 22:41:08,520 INFO L175 Difference]: Start difference. First operand has 480 places, 563 transitions, 9498 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:41:08,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 579 transitions, 10695 flow [2024-06-27 22:41:10,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 579 transitions, 10252 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 22:41:10,080 INFO L231 Difference]: Finished difference. Result has 480 places, 564 transitions, 9350 flow [2024-06-27 22:41:10,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9055, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9350, PETRI_PLACES=480, PETRI_TRANSITIONS=564} [2024-06-27 22:41:10,080 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 439 predicate places. [2024-06-27 22:41:10,080 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 564 transitions, 9350 flow [2024-06-27 22:41:10,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:10,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:10,081 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 22:41:10,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 22:41:10,081 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:10,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:10,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2142139673, now seen corresponding path program 29 times [2024-06-27 22:41:10,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:10,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446380342] [2024-06-27 22:41:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:10,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:11,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:11,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:11,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446380342] [2024-06-27 22:41:11,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446380342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:11,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:11,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:41:11,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638601649] [2024-06-27 22:41:11,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:11,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:41:11,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:41:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:41:11,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:41:11,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 564 transitions, 9350 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 22:41:11,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:11,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:41:11,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:13,297 INFO L124 PetriNetUnfolderBase]: 2158/4490 cut-off events. [2024-06-27 22:41:13,297 INFO L125 PetriNetUnfolderBase]: For 252374/252448 co-relation queries the response was YES. [2024-06-27 22:41:13,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27553 conditions, 4490 events. 2158/4490 cut-off events. For 252374/252448 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 35220 event pairs, 575 based on Foata normal form. 22/4163 useless extension candidates. Maximal degree in co-relation 27349. Up to 3118 conditions per place. [2024-06-27 22:41:13,368 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 351 selfloop transitions, 217 changer transitions 0/581 dead transitions. [2024-06-27 22:41:13,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 581 transitions, 10568 flow [2024-06-27 22:41:13,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:13,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:41:13,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:41:13,369 INFO L175 Difference]: Start difference. First operand has 480 places, 564 transitions, 9350 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:41:13,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 581 transitions, 10568 flow [2024-06-27 22:41:15,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 581 transitions, 10292 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 22:41:15,047 INFO L231 Difference]: Finished difference. Result has 483 places, 566 transitions, 9552 flow [2024-06-27 22:41:15,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9074, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9552, PETRI_PLACES=483, PETRI_TRANSITIONS=566} [2024-06-27 22:41:15,048 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 442 predicate places. [2024-06-27 22:41:15,048 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 566 transitions, 9552 flow [2024-06-27 22:41:15,048 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 22:41:15,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:15,048 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 22:41:15,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 22:41:15,048 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:15,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:15,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2142139859, now seen corresponding path program 31 times [2024-06-27 22:41:15,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:15,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510646612] [2024-06-27 22:41:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:15,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:16,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:16,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510646612] [2024-06-27 22:41:16,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510646612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:16,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:16,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:41:16,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094642931] [2024-06-27 22:41:16,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:16,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:41:16,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:16,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:41:16,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:41:16,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:41:16,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 566 transitions, 9552 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 22:41:16,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:16,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:41:16,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:17,899 INFO L124 PetriNetUnfolderBase]: 2172/4520 cut-off events. [2024-06-27 22:41:17,899 INFO L125 PetriNetUnfolderBase]: For 257495/257569 co-relation queries the response was YES. [2024-06-27 22:41:17,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27990 conditions, 4520 events. 2172/4520 cut-off events. For 257495/257569 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 35503 event pairs, 613 based on Foata normal form. 25/4192 useless extension candidates. Maximal degree in co-relation 27784. Up to 3411 conditions per place. [2024-06-27 22:41:17,968 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 427 selfloop transitions, 142 changer transitions 0/582 dead transitions. [2024-06-27 22:41:17,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 582 transitions, 10757 flow [2024-06-27 22:41:17,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:17,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:17,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 22:41:17,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 22:41:17,969 INFO L175 Difference]: Start difference. First operand has 483 places, 566 transitions, 9552 flow. Second operand 10 states and 165 transitions. [2024-06-27 22:41:17,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 582 transitions, 10757 flow [2024-06-27 22:41:19,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 582 transitions, 10308 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 22:41:19,781 INFO L231 Difference]: Finished difference. Result has 484 places, 567 transitions, 9411 flow [2024-06-27 22:41:19,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9103, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9411, PETRI_PLACES=484, PETRI_TRANSITIONS=567} [2024-06-27 22:41:19,781 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-27 22:41:19,781 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 567 transitions, 9411 flow [2024-06-27 22:41:19,781 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 22:41:19,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:19,781 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 22:41:19,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 22:41:19,781 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:19,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:19,782 INFO L85 PathProgramCache]: Analyzing trace with hash 295277161, now seen corresponding path program 32 times [2024-06-27 22:41:19,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:19,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399401680] [2024-06-27 22:41:19,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:19,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:21,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:21,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399401680] [2024-06-27 22:41:21,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399401680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:21,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:21,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:21,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184379792] [2024-06-27 22:41:21,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:21,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:21,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:21,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:21,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:21,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:41:21,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 567 transitions, 9411 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:21,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:21,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:41:21,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:23,006 INFO L124 PetriNetUnfolderBase]: 2257/4742 cut-off events. [2024-06-27 22:41:23,006 INFO L125 PetriNetUnfolderBase]: For 352041/352125 co-relation queries the response was YES. [2024-06-27 22:41:23,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29786 conditions, 4742 events. 2257/4742 cut-off events. For 352041/352125 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 37709 event pairs, 617 based on Foata normal form. 28/4407 useless extension candidates. Maximal degree in co-relation 29580. Up to 3022 conditions per place. [2024-06-27 22:41:23,070 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 365 selfloop transitions, 217 changer transitions 0/595 dead transitions. [2024-06-27 22:41:23,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 595 transitions, 10988 flow [2024-06-27 22:41:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:41:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:41:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:41:23,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-27 22:41:23,071 INFO L175 Difference]: Start difference. First operand has 484 places, 567 transitions, 9411 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:41:23,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 595 transitions, 10988 flow [2024-06-27 22:41:24,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 595 transitions, 10699 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 22:41:24,930 INFO L231 Difference]: Finished difference. Result has 485 places, 568 transitions, 9581 flow [2024-06-27 22:41:24,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9122, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9581, PETRI_PLACES=485, PETRI_TRANSITIONS=568} [2024-06-27 22:41:24,931 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 444 predicate places. [2024-06-27 22:41:24,931 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 568 transitions, 9581 flow [2024-06-27 22:41:24,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:24,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:24,932 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 22:41:24,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 22:41:24,932 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:24,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:24,932 INFO L85 PathProgramCache]: Analyzing trace with hash 290693191, now seen corresponding path program 33 times [2024-06-27 22:41:24,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:24,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379443954] [2024-06-27 22:41:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:24,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:26,602 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 22:41:26,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:26,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379443954] [2024-06-27 22:41:26,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379443954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:26,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:26,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:41:26,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141778015] [2024-06-27 22:41:26,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:26,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:41:26,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:26,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:41:26,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:41:26,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:41:26,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 568 transitions, 9581 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 22:41:26,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:26,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:41:26,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:28,242 INFO L124 PetriNetUnfolderBase]: 2290/4792 cut-off events. [2024-06-27 22:41:28,242 INFO L125 PetriNetUnfolderBase]: For 378554/378631 co-relation queries the response was YES. [2024-06-27 22:41:28,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30776 conditions, 4792 events. 2290/4792 cut-off events. For 378554/378631 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 38276 event pairs, 619 based on Foata normal form. 22/4448 useless extension candidates. Maximal degree in co-relation 30570. Up to 2812 conditions per place. [2024-06-27 22:41:28,312 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 359 selfloop transitions, 229 changer transitions 0/601 dead transitions. [2024-06-27 22:41:28,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 601 transitions, 11219 flow [2024-06-27 22:41:28,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:28,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:28,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 22:41:28,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 22:41:28,317 INFO L175 Difference]: Start difference. First operand has 485 places, 568 transitions, 9581 flow. Second operand 10 states and 186 transitions. [2024-06-27 22:41:28,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 601 transitions, 11219 flow [2024-06-27 22:41:30,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 601 transitions, 10767 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 22:41:30,304 INFO L231 Difference]: Finished difference. Result has 486 places, 570 transitions, 9637 flow [2024-06-27 22:41:30,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9133, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9637, PETRI_PLACES=486, PETRI_TRANSITIONS=570} [2024-06-27 22:41:30,304 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 445 predicate places. [2024-06-27 22:41:30,304 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 570 transitions, 9637 flow [2024-06-27 22:41:30,304 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 22:41:30,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:30,305 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 22:41:30,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 22:41:30,305 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:30,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash 290808511, now seen corresponding path program 34 times [2024-06-27 22:41:30,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:30,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385788997] [2024-06-27 22:41:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:30,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:31,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:31,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385788997] [2024-06-27 22:41:31,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385788997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:31,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:31,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:31,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106233226] [2024-06-27 22:41:31,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:31,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:31,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:31,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:31,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:31,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:41:31,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 570 transitions, 9637 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:31,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:31,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:41:31,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:33,372 INFO L124 PetriNetUnfolderBase]: 2302/4834 cut-off events. [2024-06-27 22:41:33,372 INFO L125 PetriNetUnfolderBase]: For 374729/374813 co-relation queries the response was YES. [2024-06-27 22:41:33,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31001 conditions, 4834 events. 2302/4834 cut-off events. For 374729/374813 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 38762 event pairs, 645 based on Foata normal form. 30/4497 useless extension candidates. Maximal degree in co-relation 30795. Up to 3274 conditions per place. [2024-06-27 22:41:33,445 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 360 selfloop transitions, 221 changer transitions 0/594 dead transitions. [2024-06-27 22:41:33,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 594 transitions, 11194 flow [2024-06-27 22:41:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:33,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:33,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:41:33,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 22:41:33,446 INFO L175 Difference]: Start difference. First operand has 486 places, 570 transitions, 9637 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:41:33,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 594 transitions, 11194 flow [2024-06-27 22:41:35,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 594 transitions, 10902 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 22:41:35,590 INFO L231 Difference]: Finished difference. Result has 489 places, 571 transitions, 9816 flow [2024-06-27 22:41:35,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9349, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9816, PETRI_PLACES=489, PETRI_TRANSITIONS=571} [2024-06-27 22:41:35,591 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 448 predicate places. [2024-06-27 22:41:35,591 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 571 transitions, 9816 flow [2024-06-27 22:41:35,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:35,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:35,591 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 22:41:35,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 22:41:35,591 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:35,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:35,592 INFO L85 PathProgramCache]: Analyzing trace with hash 290813347, now seen corresponding path program 30 times [2024-06-27 22:41:35,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:35,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180663561] [2024-06-27 22:41:35,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:35,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:37,157 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 22:41:37,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:37,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180663561] [2024-06-27 22:41:37,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180663561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:37,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:37,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:37,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567632851] [2024-06-27 22:41:37,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:37,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:37,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:37,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:41:37,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 571 transitions, 9816 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:37,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:37,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:41:37,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:38,650 INFO L124 PetriNetUnfolderBase]: 2313/4848 cut-off events. [2024-06-27 22:41:38,650 INFO L125 PetriNetUnfolderBase]: For 374686/374763 co-relation queries the response was YES. [2024-06-27 22:41:38,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31506 conditions, 4848 events. 2313/4848 cut-off events. For 374686/374763 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 38813 event pairs, 670 based on Foata normal form. 21/4494 useless extension candidates. Maximal degree in co-relation 31299. Up to 3375 conditions per place. [2024-06-27 22:41:38,728 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 350 selfloop transitions, 225 changer transitions 0/588 dead transitions. [2024-06-27 22:41:38,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 588 transitions, 11052 flow [2024-06-27 22:41:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:38,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:38,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:41:38,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 22:41:38,729 INFO L175 Difference]: Start difference. First operand has 489 places, 571 transitions, 9816 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:41:38,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 588 transitions, 11052 flow [2024-06-27 22:41:40,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 588 transitions, 10579 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 22:41:40,753 INFO L231 Difference]: Finished difference. Result has 490 places, 573 transitions, 9841 flow [2024-06-27 22:41:40,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9343, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9841, PETRI_PLACES=490, PETRI_TRANSITIONS=573} [2024-06-27 22:41:40,753 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 449 predicate places. [2024-06-27 22:41:40,753 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 573 transitions, 9841 flow [2024-06-27 22:41:40,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:40,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:40,754 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 22:41:40,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 22:41:40,754 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:40,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:40,754 INFO L85 PathProgramCache]: Analyzing trace with hash 566783661, now seen corresponding path program 35 times [2024-06-27 22:41:40,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:40,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701834598] [2024-06-27 22:41:40,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:40,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:42,355 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 22:41:42,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:42,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701834598] [2024-06-27 22:41:42,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701834598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:42,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:42,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:41:42,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080300258] [2024-06-27 22:41:42,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:42,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:41:42,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:42,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:41:42,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:41:42,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:41:42,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 573 transitions, 9841 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 22:41:42,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:42,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:41:42,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:43,992 INFO L124 PetriNetUnfolderBase]: 2310/4843 cut-off events. [2024-06-27 22:41:43,992 INFO L125 PetriNetUnfolderBase]: For 354958/355042 co-relation queries the response was YES. [2024-06-27 22:41:44,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31120 conditions, 4843 events. 2310/4843 cut-off events. For 354958/355042 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 38828 event pairs, 669 based on Foata normal form. 30/4501 useless extension candidates. Maximal degree in co-relation 30913. Up to 3372 conditions per place. [2024-06-27 22:41:44,068 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 359 selfloop transitions, 219 changer transitions 0/591 dead transitions. [2024-06-27 22:41:44,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 591 transitions, 11067 flow [2024-06-27 22:41:44,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:44,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:44,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:41:44,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:41:44,069 INFO L175 Difference]: Start difference. First operand has 490 places, 573 transitions, 9841 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:41:44,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 591 transitions, 11067 flow [2024-06-27 22:41:46,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 591 transitions, 10588 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 22:41:46,185 INFO L231 Difference]: Finished difference. Result has 491 places, 573 transitions, 9806 flow [2024-06-27 22:41:46,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9362, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9806, PETRI_PLACES=491, PETRI_TRANSITIONS=573} [2024-06-27 22:41:46,185 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 450 predicate places. [2024-06-27 22:41:46,186 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 573 transitions, 9806 flow [2024-06-27 22:41:46,186 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 22:41:46,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:46,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:46,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 22:41:46,186 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:46,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:46,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1090268563, now seen corresponding path program 36 times [2024-06-27 22:41:46,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:46,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128611433] [2024-06-27 22:41:46,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:46,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:47,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:47,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128611433] [2024-06-27 22:41:47,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128611433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:47,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:47,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:41:47,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126098336] [2024-06-27 22:41:47,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:47,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:41:47,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:47,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:41:47,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:41:47,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:41:47,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 573 transitions, 9806 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 22:41:47,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:47,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:41:47,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:49,297 INFO L124 PetriNetUnfolderBase]: 2324/4841 cut-off events. [2024-06-27 22:41:49,297 INFO L125 PetriNetUnfolderBase]: For 354406/354479 co-relation queries the response was YES. [2024-06-27 22:41:49,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31154 conditions, 4841 events. 2324/4841 cut-off events. For 354406/354479 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 38596 event pairs, 585 based on Foata normal form. 35/4508 useless extension candidates. Maximal degree in co-relation 30947. Up to 2974 conditions per place. [2024-06-27 22:41:49,378 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 385 selfloop transitions, 206 changer transitions 0/604 dead transitions. [2024-06-27 22:41:49,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 604 transitions, 11433 flow [2024-06-27 22:41:49,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:49,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:41:49,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 22:41:49,379 INFO L175 Difference]: Start difference. First operand has 491 places, 573 transitions, 9806 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:41:49,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 604 transitions, 11433 flow [2024-06-27 22:41:51,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 604 transitions, 10985 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 22:41:51,480 INFO L231 Difference]: Finished difference. Result has 491 places, 574 transitions, 9799 flow [2024-06-27 22:41:51,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9360, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9799, PETRI_PLACES=491, PETRI_TRANSITIONS=574} [2024-06-27 22:41:51,480 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 450 predicate places. [2024-06-27 22:41:51,480 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 574 transitions, 9799 flow [2024-06-27 22:41:51,481 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 22:41:51,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:51,481 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 22:41:51,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 22:41:51,481 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:51,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:51,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1482666995, now seen corresponding path program 31 times [2024-06-27 22:41:51,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:51,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238668468] [2024-06-27 22:41:51,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:51,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:53,046 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 22:41:53,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:53,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238668468] [2024-06-27 22:41:53,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238668468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:53,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:53,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:53,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752625643] [2024-06-27 22:41:53,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:53,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:53,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:53,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:53,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:53,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:41:53,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 574 transitions, 9799 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:53,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:53,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:41:53,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:54,987 INFO L124 PetriNetUnfolderBase]: 2899/5713 cut-off events. [2024-06-27 22:41:54,987 INFO L125 PetriNetUnfolderBase]: For 356730/356730 co-relation queries the response was YES. [2024-06-27 22:41:55,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36501 conditions, 5713 events. 2899/5713 cut-off events. For 356730/356730 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 44076 event pairs, 686 based on Foata normal form. 2/5310 useless extension candidates. Maximal degree in co-relation 36294. Up to 3771 conditions per place. [2024-06-27 22:41:55,090 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 294 selfloop transitions, 307 changer transitions 0/609 dead transitions. [2024-06-27 22:41:55,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 609 transitions, 11529 flow [2024-06-27 22:41:55,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:41:55,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-27 22:41:55,091 INFO L175 Difference]: Start difference. First operand has 491 places, 574 transitions, 9799 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:41:55,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 609 transitions, 11529 flow [2024-06-27 22:41:57,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 609 transitions, 10798 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-27 22:41:57,774 INFO L231 Difference]: Finished difference. Result has 490 places, 576 transitions, 9732 flow [2024-06-27 22:41:57,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9070, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9732, PETRI_PLACES=490, PETRI_TRANSITIONS=576} [2024-06-27 22:41:57,775 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 449 predicate places. [2024-06-27 22:41:57,775 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 576 transitions, 9732 flow [2024-06-27 22:41:57,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:57,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:57,775 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 22:41:57,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 22:41:57,775 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:57,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:57,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1482671831, now seen corresponding path program 37 times [2024-06-27 22:41:57,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:57,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639378118] [2024-06-27 22:41:57,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:57,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:59,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:59,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:59,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639378118] [2024-06-27 22:41:59,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639378118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:59,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:59,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:41:59,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769117590] [2024-06-27 22:41:59,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:59,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:41:59,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:59,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:41:59,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:41:59,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:41:59,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 576 transitions, 9732 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 22:41:59,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:59,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:41:59,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:01,153 INFO L124 PetriNetUnfolderBase]: 2291/4791 cut-off events. [2024-06-27 22:42:01,153 INFO L125 PetriNetUnfolderBase]: For 278399/278469 co-relation queries the response was YES. [2024-06-27 22:42:01,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29411 conditions, 4791 events. 2291/4791 cut-off events. For 278399/278469 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 38216 event pairs, 606 based on Foata normal form. 37/4451 useless extension candidates. Maximal degree in co-relation 29206. Up to 2999 conditions per place. [2024-06-27 22:42:01,228 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 301 selfloop transitions, 294 changer transitions 0/608 dead transitions. [2024-06-27 22:42:01,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 608 transitions, 11650 flow [2024-06-27 22:42:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 22:42:01,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-06-27 22:42:01,229 INFO L175 Difference]: Start difference. First operand has 490 places, 576 transitions, 9732 flow. Second operand 10 states and 187 transitions. [2024-06-27 22:42:01,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 608 transitions, 11650 flow [2024-06-27 22:42:03,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 608 transitions, 10956 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 22:42:03,039 INFO L231 Difference]: Finished difference. Result has 491 places, 578 transitions, 9672 flow [2024-06-27 22:42:03,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9042, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9672, PETRI_PLACES=491, PETRI_TRANSITIONS=578} [2024-06-27 22:42:03,040 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 450 predicate places. [2024-06-27 22:42:03,040 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 578 transitions, 9672 flow [2024-06-27 22:42:03,040 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 22:42:03,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:03,041 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 22:42:03,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 22:42:03,041 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:03,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:03,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1482667181, now seen corresponding path program 38 times [2024-06-27 22:42:03,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:03,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503990471] [2024-06-27 22:42:03,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:03,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:04,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:04,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:04,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503990471] [2024-06-27 22:42:04,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503990471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:04,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:04,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:04,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043594281] [2024-06-27 22:42:04,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:04,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:04,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:04,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:04,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:04,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:42:04,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 578 transitions, 9672 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:04,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:04,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:42:04,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:06,053 INFO L124 PetriNetUnfolderBase]: 2288/4786 cut-off events. [2024-06-27 22:42:06,053 INFO L125 PetriNetUnfolderBase]: For 258679/258748 co-relation queries the response was YES. [2024-06-27 22:42:06,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29017 conditions, 4786 events. 2288/4786 cut-off events. For 258679/258748 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 38215 event pairs, 667 based on Foata normal form. 37/4444 useless extension candidates. Maximal degree in co-relation 28812. Up to 3515 conditions per place. [2024-06-27 22:42:06,127 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 399 selfloop transitions, 187 changer transitions 0/599 dead transitions. [2024-06-27 22:42:06,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 599 transitions, 10938 flow [2024-06-27 22:42:06,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:42:06,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 22:42:06,128 INFO L175 Difference]: Start difference. First operand has 491 places, 578 transitions, 9672 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:42:06,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 599 transitions, 10938 flow [2024-06-27 22:42:07,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 599 transitions, 10629 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 22:42:07,925 INFO L231 Difference]: Finished difference. Result has 495 places, 578 transitions, 9743 flow [2024-06-27 22:42:07,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9363, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9743, PETRI_PLACES=495, PETRI_TRANSITIONS=578} [2024-06-27 22:42:07,926 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 454 predicate places. [2024-06-27 22:42:07,926 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 578 transitions, 9743 flow [2024-06-27 22:42:07,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:07,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:07,926 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 22:42:07,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 22:42:07,926 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:07,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:07,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1305289397, now seen corresponding path program 7 times [2024-06-27 22:42:07,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:07,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056453985] [2024-06-27 22:42:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:07,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:10,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:10,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056453985] [2024-06-27 22:42:10,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056453985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:10,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:10,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:10,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740288318] [2024-06-27 22:42:10,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:10,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:10,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:10,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:10,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:10,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:42:10,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 578 transitions, 9743 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:10,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:10,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:42:10,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:12,112 INFO L124 PetriNetUnfolderBase]: 2873/5637 cut-off events. [2024-06-27 22:42:12,112 INFO L125 PetriNetUnfolderBase]: For 260245/260247 co-relation queries the response was YES. [2024-06-27 22:42:12,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34072 conditions, 5637 events. 2873/5637 cut-off events. For 260245/260247 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 43208 event pairs, 659 based on Foata normal form. 6/5236 useless extension candidates. Maximal degree in co-relation 33866. Up to 4222 conditions per place. [2024-06-27 22:42:12,200 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 408 selfloop transitions, 194 changer transitions 0/610 dead transitions. [2024-06-27 22:42:12,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 610 transitions, 11140 flow [2024-06-27 22:42:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:42:12,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:42:12,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:42:12,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:42:12,201 INFO L175 Difference]: Start difference. First operand has 495 places, 578 transitions, 9743 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:42:12,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 610 transitions, 11140 flow [2024-06-27 22:42:13,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 610 transitions, 10758 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 22:42:13,971 INFO L231 Difference]: Finished difference. Result has 496 places, 583 transitions, 9842 flow [2024-06-27 22:42:13,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9361, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9842, PETRI_PLACES=496, PETRI_TRANSITIONS=583} [2024-06-27 22:42:13,971 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 455 predicate places. [2024-06-27 22:42:13,972 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 583 transitions, 9842 flow [2024-06-27 22:42:13,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:13,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:13,972 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 22:42:13,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 22:42:13,972 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:13,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:13,972 INFO L85 PathProgramCache]: Analyzing trace with hash -762515277, now seen corresponding path program 32 times [2024-06-27 22:42:13,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:13,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115580664] [2024-06-27 22:42:13,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:13,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:15,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:15,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115580664] [2024-06-27 22:42:15,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115580664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:15,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:15,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:15,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509746249] [2024-06-27 22:42:15,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:15,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:15,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:15,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:15,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:15,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:42:15,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 583 transitions, 9842 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:15,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:15,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:42:15,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:17,061 INFO L124 PetriNetUnfolderBase]: 2327/4864 cut-off events. [2024-06-27 22:42:17,061 INFO L125 PetriNetUnfolderBase]: For 241064/241133 co-relation queries the response was YES. [2024-06-27 22:42:17,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29611 conditions, 4864 events. 2327/4864 cut-off events. For 241064/241133 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 38887 event pairs, 664 based on Foata normal form. 16/4498 useless extension candidates. Maximal degree in co-relation 29405. Up to 3432 conditions per place. [2024-06-27 22:42:17,137 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 349 selfloop transitions, 243 changer transitions 0/605 dead transitions. [2024-06-27 22:42:17,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 605 transitions, 11432 flow [2024-06-27 22:42:17,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:42:17,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:42:17,138 INFO L175 Difference]: Start difference. First operand has 496 places, 583 transitions, 9842 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:42:17,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 605 transitions, 11432 flow [2024-06-27 22:42:18,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 605 transitions, 10993 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 22:42:18,971 INFO L231 Difference]: Finished difference. Result has 497 places, 585 transitions, 9943 flow [2024-06-27 22:42:18,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9405, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9943, PETRI_PLACES=497, PETRI_TRANSITIONS=585} [2024-06-27 22:42:18,971 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-27 22:42:18,972 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 585 transitions, 9943 flow [2024-06-27 22:42:18,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:18,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:18,972 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 22:42:18,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 22:42:18,972 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:18,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:18,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1132123345, now seen corresponding path program 33 times [2024-06-27 22:42:18,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:18,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451560411] [2024-06-27 22:42:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:18,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:20,681 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 22:42:20,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:20,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451560411] [2024-06-27 22:42:20,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451560411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:20,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:20,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:42:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917946844] [2024-06-27 22:42:20,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:20,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:42:20,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:42:20,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:42:20,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:42:20,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 585 transitions, 9943 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 22:42:20,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:20,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:42:20,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:22,384 INFO L124 PetriNetUnfolderBase]: 2334/4860 cut-off events. [2024-06-27 22:42:22,384 INFO L125 PetriNetUnfolderBase]: For 243256/243324 co-relation queries the response was YES. [2024-06-27 22:42:22,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29637 conditions, 4860 events. 2334/4860 cut-off events. For 243256/243324 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 38797 event pairs, 639 based on Foata normal form. 15/4487 useless extension candidates. Maximal degree in co-relation 29430. Up to 3476 conditions per place. [2024-06-27 22:42:22,458 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 362 selfloop transitions, 227 changer transitions 0/602 dead transitions. [2024-06-27 22:42:22,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 602 transitions, 11225 flow [2024-06-27 22:42:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:22,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:42:22,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:42:22,459 INFO L175 Difference]: Start difference. First operand has 497 places, 585 transitions, 9943 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:42:22,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 602 transitions, 11225 flow [2024-06-27 22:42:24,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 602 transitions, 10705 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 22:42:24,249 INFO L231 Difference]: Finished difference. Result has 498 places, 587 transitions, 9946 flow [2024-06-27 22:42:24,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9423, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9946, PETRI_PLACES=498, PETRI_TRANSITIONS=587} [2024-06-27 22:42:24,249 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 457 predicate places. [2024-06-27 22:42:24,249 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 587 transitions, 9946 flow [2024-06-27 22:42:24,249 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 22:42:24,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:24,250 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 22:42:24,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 22:42:24,250 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:24,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:24,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1478198531, now seen corresponding path program 39 times [2024-06-27 22:42:24,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:24,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657379219] [2024-06-27 22:42:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:24,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:25,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:25,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657379219] [2024-06-27 22:42:25,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657379219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:25,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:25,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:42:25,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141901192] [2024-06-27 22:42:25,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:25,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:42:25,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:25,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:42:25,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:42:26,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:42:26,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 587 transitions, 9946 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 22:42:26,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:26,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:42:26,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:27,654 INFO L124 PetriNetUnfolderBase]: 2350/4912 cut-off events. [2024-06-27 22:42:27,655 INFO L125 PetriNetUnfolderBase]: For 243300/243369 co-relation queries the response was YES. [2024-06-27 22:42:27,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29768 conditions, 4912 events. 2350/4912 cut-off events. For 243300/243369 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 39344 event pairs, 666 based on Foata normal form. 19/4543 useless extension candidates. Maximal degree in co-relation 29561. Up to 3442 conditions per place. [2024-06-27 22:42:27,729 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 358 selfloop transitions, 240 changer transitions 0/611 dead transitions. [2024-06-27 22:42:27,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 611 transitions, 11549 flow [2024-06-27 22:42:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:27,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:27,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:42:27,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 22:42:27,730 INFO L175 Difference]: Start difference. First operand has 498 places, 587 transitions, 9946 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:42:27,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 611 transitions, 11549 flow [2024-06-27 22:42:29,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 611 transitions, 11066 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 22:42:29,475 INFO L231 Difference]: Finished difference. Result has 499 places, 588 transitions, 9973 flow [2024-06-27 22:42:29,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9465, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9973, PETRI_PLACES=499, PETRI_TRANSITIONS=588} [2024-06-27 22:42:29,476 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 458 predicate places. [2024-06-27 22:42:29,476 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 588 transitions, 9973 flow [2024-06-27 22:42:29,476 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 22:42:29,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:29,476 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 22:42:29,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 22:42:29,476 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:29,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:29,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1478025551, now seen corresponding path program 40 times [2024-06-27 22:42:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:29,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584365984] [2024-06-27 22:42:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:29,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:30,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:30,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584365984] [2024-06-27 22:42:30,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584365984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:30,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:30,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:30,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451461400] [2024-06-27 22:42:30,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:30,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:30,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:30,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:30,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:31,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:42:31,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 588 transitions, 9973 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:31,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:31,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:42:31,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:32,510 INFO L124 PetriNetUnfolderBase]: 2362/4941 cut-off events. [2024-06-27 22:42:32,510 INFO L125 PetriNetUnfolderBase]: For 244087/244157 co-relation queries the response was YES. [2024-06-27 22:42:32,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29962 conditions, 4941 events. 2362/4941 cut-off events. For 244087/244157 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 39660 event pairs, 719 based on Foata normal form. 16/4566 useless extension candidates. Maximal degree in co-relation 29755. Up to 3761 conditions per place. [2024-06-27 22:42:32,593 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 441 selfloop transitions, 153 changer transitions 0/607 dead transitions. [2024-06-27 22:42:32,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 607 transitions, 11266 flow [2024-06-27 22:42:32,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 22:42:32,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 22:42:32,595 INFO L175 Difference]: Start difference. First operand has 499 places, 588 transitions, 9973 flow. Second operand 10 states and 167 transitions. [2024-06-27 22:42:32,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 607 transitions, 11266 flow [2024-06-27 22:42:34,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 607 transitions, 10777 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 22:42:34,387 INFO L231 Difference]: Finished difference. Result has 501 places, 589 transitions, 9819 flow [2024-06-27 22:42:34,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9484, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9819, PETRI_PLACES=501, PETRI_TRANSITIONS=589} [2024-06-27 22:42:34,388 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 460 predicate places. [2024-06-27 22:42:34,388 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 589 transitions, 9819 flow [2024-06-27 22:42:34,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:34,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:34,388 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 22:42:34,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 22:42:34,389 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:34,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:34,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1478018855, now seen corresponding path program 34 times [2024-06-27 22:42:34,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:34,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178315197] [2024-06-27 22:42:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:34,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:36,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:36,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178315197] [2024-06-27 22:42:36,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178315197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:36,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:36,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:42:36,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005894016] [2024-06-27 22:42:36,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:36,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:42:36,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:36,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:42:36,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:42:36,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:42:36,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 589 transitions, 9819 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 22:42:36,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:36,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:42:36,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:37,657 INFO L124 PetriNetUnfolderBase]: 2360/4940 cut-off events. [2024-06-27 22:42:37,657 INFO L125 PetriNetUnfolderBase]: For 225460/225529 co-relation queries the response was YES. [2024-06-27 22:42:37,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29329 conditions, 4940 events. 2360/4940 cut-off events. For 225460/225529 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 39664 event pairs, 678 based on Foata normal form. 13/4562 useless extension candidates. Maximal degree in co-relation 29121. Up to 3525 conditions per place. [2024-06-27 22:42:37,734 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 359 selfloop transitions, 235 changer transitions 0/607 dead transitions. [2024-06-27 22:42:37,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 607 transitions, 11087 flow [2024-06-27 22:42:37,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:37,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:42:37,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 22:42:37,736 INFO L175 Difference]: Start difference. First operand has 501 places, 589 transitions, 9819 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:42:37,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 607 transitions, 11087 flow [2024-06-27 22:42:39,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 607 transitions, 10753 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 22:42:39,483 INFO L231 Difference]: Finished difference. Result has 502 places, 589 transitions, 9966 flow [2024-06-27 22:42:39,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9485, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9966, PETRI_PLACES=502, PETRI_TRANSITIONS=589} [2024-06-27 22:42:39,483 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 461 predicate places. [2024-06-27 22:42:39,484 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 589 transitions, 9966 flow [2024-06-27 22:42:39,484 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 22:42:39,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:39,484 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 22:42:39,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 22:42:39,484 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:39,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:39,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1478198345, now seen corresponding path program 35 times [2024-06-27 22:42:39,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:39,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610217985] [2024-06-27 22:42:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:39,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:41,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:41,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610217985] [2024-06-27 22:42:41,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610217985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:41,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:41,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:42:41,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274666029] [2024-06-27 22:42:41,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:41,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:42:41,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:41,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:42:41,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:42:41,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:42:41,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 589 transitions, 9966 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 22:42:41,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:41,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:42:41,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:42,911 INFO L124 PetriNetUnfolderBase]: 2367/4948 cut-off events. [2024-06-27 22:42:42,911 INFO L125 PetriNetUnfolderBase]: For 226927/226997 co-relation queries the response was YES. [2024-06-27 22:42:42,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29594 conditions, 4948 events. 2367/4948 cut-off events. For 226927/226997 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 39740 event pairs, 679 based on Foata normal form. 16/4570 useless extension candidates. Maximal degree in co-relation 29386. Up to 3485 conditions per place. [2024-06-27 22:42:42,992 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 354 selfloop transitions, 243 changer transitions 0/610 dead transitions. [2024-06-27 22:42:42,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 610 transitions, 11290 flow [2024-06-27 22:42:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:42,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:42:42,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 22:42:42,993 INFO L175 Difference]: Start difference. First operand has 502 places, 589 transitions, 9966 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:42:42,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 610 transitions, 11290 flow [2024-06-27 22:42:44,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 610 transitions, 10799 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 22:42:44,407 INFO L231 Difference]: Finished difference. Result has 502 places, 591 transitions, 10017 flow [2024-06-27 22:42:44,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9475, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10017, PETRI_PLACES=502, PETRI_TRANSITIONS=591} [2024-06-27 22:42:44,407 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 461 predicate places. [2024-06-27 22:42:44,407 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 591 transitions, 10017 flow [2024-06-27 22:42:44,407 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 22:42:44,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:44,408 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 22:42:44,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 22:42:44,408 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:44,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:44,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1478203181, now seen corresponding path program 41 times [2024-06-27 22:42:44,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:44,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696460965] [2024-06-27 22:42:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:44,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:45,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:45,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696460965] [2024-06-27 22:42:45,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696460965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:45,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:45,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:45,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509187825] [2024-06-27 22:42:45,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:45,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:45,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:45,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:45,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:46,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:42:46,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 591 transitions, 10017 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:46,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:46,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:42:46,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:47,550 INFO L124 PetriNetUnfolderBase]: 2452/5153 cut-off events. [2024-06-27 22:42:47,550 INFO L125 PetriNetUnfolderBase]: For 326271/326343 co-relation queries the response was YES. [2024-06-27 22:42:47,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31762 conditions, 5153 events. 2452/5153 cut-off events. For 326271/326343 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 41747 event pairs, 700 based on Foata normal form. 16/4764 useless extension candidates. Maximal degree in co-relation 31554. Up to 3363 conditions per place. [2024-06-27 22:42:47,632 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 367 selfloop transitions, 243 changer transitions 0/623 dead transitions. [2024-06-27 22:42:47,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 623 transitions, 11700 flow [2024-06-27 22:42:47,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:42:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:42:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-27 22:42:47,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-06-27 22:42:47,633 INFO L175 Difference]: Start difference. First operand has 502 places, 591 transitions, 10017 flow. Second operand 9 states and 177 transitions. [2024-06-27 22:42:47,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 623 transitions, 11700 flow [2024-06-27 22:42:49,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 623 transitions, 11185 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 22:42:49,937 INFO L231 Difference]: Finished difference. Result has 502 places, 592 transitions, 10021 flow [2024-06-27 22:42:49,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9504, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10021, PETRI_PLACES=502, PETRI_TRANSITIONS=592} [2024-06-27 22:42:49,937 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 461 predicate places. [2024-06-27 22:42:49,937 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 592 transitions, 10021 flow [2024-06-27 22:42:49,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:49,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:49,937 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 22:42:49,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 22:42:49,937 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:49,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:49,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1311791771, now seen corresponding path program 42 times [2024-06-27 22:42:49,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:49,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222550983] [2024-06-27 22:42:49,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:49,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:51,365 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 22:42:51,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:51,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222550983] [2024-06-27 22:42:51,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222550983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:51,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:51,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:51,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191711586] [2024-06-27 22:42:51,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:51,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:51,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:51,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:51,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:51,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:42:51,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 592 transitions, 10021 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:51,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:51,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:42:51,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:53,134 INFO L124 PetriNetUnfolderBase]: 2468/5176 cut-off events. [2024-06-27 22:42:53,134 INFO L125 PetriNetUnfolderBase]: For 327645/327715 co-relation queries the response was YES. [2024-06-27 22:42:53,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31975 conditions, 5176 events. 2468/5176 cut-off events. For 327645/327715 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 42034 event pairs, 759 based on Foata normal form. 19/4783 useless extension candidates. Maximal degree in co-relation 31768. Up to 3964 conditions per place. [2024-06-27 22:42:53,213 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 457 selfloop transitions, 138 changer transitions 0/608 dead transitions. [2024-06-27 22:42:53,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 608 transitions, 11290 flow [2024-06-27 22:42:53,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:42:53,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 22:42:53,215 INFO L175 Difference]: Start difference. First operand has 502 places, 592 transitions, 10021 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:42:53,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 608 transitions, 11290 flow [2024-06-27 22:42:55,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 608 transitions, 10788 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 22:42:55,238 INFO L231 Difference]: Finished difference. Result has 504 places, 593 transitions, 9828 flow [2024-06-27 22:42:55,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9519, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9828, PETRI_PLACES=504, PETRI_TRANSITIONS=593} [2024-06-27 22:42:55,238 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 463 predicate places. [2024-06-27 22:42:55,238 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 593 transitions, 9828 flow [2024-06-27 22:42:55,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:55,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:55,239 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 22:42:55,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 22:42:55,239 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:55,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:55,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1311791585, now seen corresponding path program 36 times [2024-06-27 22:42:55,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:55,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52465790] [2024-06-27 22:42:55,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:55,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:56,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:56,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52465790] [2024-06-27 22:42:56,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52465790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:56,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:56,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:56,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146346411] [2024-06-27 22:42:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:56,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:56,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:56,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:56,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:56,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:42:56,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 593 transitions, 9828 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:56,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:56,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:42:56,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:58,357 INFO L124 PetriNetUnfolderBase]: 2419/5042 cut-off events. [2024-06-27 22:42:58,357 INFO L125 PetriNetUnfolderBase]: For 247350/247416 co-relation queries the response was YES. [2024-06-27 22:42:58,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30263 conditions, 5042 events. 2419/5042 cut-off events. For 247350/247416 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 40539 event pairs, 669 based on Foata normal form. 19/4653 useless extension candidates. Maximal degree in co-relation 30055. Up to 3588 conditions per place. [2024-06-27 22:42:58,434 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 383 selfloop transitions, 219 changer transitions 0/615 dead transitions. [2024-06-27 22:42:58,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 615 transitions, 11482 flow [2024-06-27 22:42:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:58,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:42:58,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:42:58,435 INFO L175 Difference]: Start difference. First operand has 504 places, 593 transitions, 9828 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:42:58,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 615 transitions, 11482 flow [2024-06-27 22:43:00,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 615 transitions, 11192 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 22:43:00,077 INFO L231 Difference]: Finished difference. Result has 507 places, 597 transitions, 10116 flow [2024-06-27 22:43:00,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9538, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10116, PETRI_PLACES=507, PETRI_TRANSITIONS=597} [2024-06-27 22:43:00,077 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 466 predicate places. [2024-06-27 22:43:00,077 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 597 transitions, 10116 flow [2024-06-27 22:43:00,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:00,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:00,078 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 22:43:00,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 22:43:00,078 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:00,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:00,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1311969401, now seen corresponding path program 43 times [2024-06-27 22:43:00,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:00,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102551092] [2024-06-27 22:43:00,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:00,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:01,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:01,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102551092] [2024-06-27 22:43:01,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102551092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:01,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:01,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:43:01,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169780922] [2024-06-27 22:43:01,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:01,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:43:01,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:01,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:43:01,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:43:01,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:43:01,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 597 transitions, 10116 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:01,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:01,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:43:01,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:03,277 INFO L124 PetriNetUnfolderBase]: 2502/5258 cut-off events. [2024-06-27 22:43:03,277 INFO L125 PetriNetUnfolderBase]: For 352628/352699 co-relation queries the response was YES. [2024-06-27 22:43:03,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32690 conditions, 5258 events. 2502/5258 cut-off events. For 352628/352699 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 42718 event pairs, 690 based on Foata normal form. 25/4860 useless extension candidates. Maximal degree in co-relation 32480. Up to 3318 conditions per place. [2024-06-27 22:43:03,356 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 381 selfloop transitions, 233 changer transitions 0/627 dead transitions. [2024-06-27 22:43:03,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 627 transitions, 12067 flow [2024-06-27 22:43:03,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:43:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:43:03,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 22:43:03,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2024-06-27 22:43:03,357 INFO L175 Difference]: Start difference. First operand has 507 places, 597 transitions, 10116 flow. Second operand 9 states and 174 transitions. [2024-06-27 22:43:03,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 627 transitions, 12067 flow [2024-06-27 22:43:05,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 627 transitions, 11606 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 22:43:05,477 INFO L231 Difference]: Finished difference. Result has 508 places, 598 transitions, 10158 flow [2024-06-27 22:43:05,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9659, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10158, PETRI_PLACES=508, PETRI_TRANSITIONS=598} [2024-06-27 22:43:05,478 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 467 predicate places. [2024-06-27 22:43:05,478 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 598 transitions, 10158 flow [2024-06-27 22:43:05,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:05,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:05,479 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 22:43:05,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 22:43:05,479 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:05,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:05,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1305535475, now seen corresponding path program 37 times [2024-06-27 22:43:05,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:05,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449831520] [2024-06-27 22:43:05,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:05,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:07,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:07,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449831520] [2024-06-27 22:43:07,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449831520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:07,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:07,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:43:07,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695053097] [2024-06-27 22:43:07,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:07,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:43:07,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:07,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:43:07,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:43:07,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:43:07,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 598 transitions, 10158 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:07,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:07,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:43:07,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:08,712 INFO L124 PetriNetUnfolderBase]: 2511/5255 cut-off events. [2024-06-27 22:43:08,713 INFO L125 PetriNetUnfolderBase]: For 353499/353570 co-relation queries the response was YES. [2024-06-27 22:43:08,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32900 conditions, 5255 events. 2511/5255 cut-off events. For 353499/353570 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 42732 event pairs, 715 based on Foata normal form. 20/4851 useless extension candidates. Maximal degree in co-relation 32691. Up to 3741 conditions per place. [2024-06-27 22:43:08,794 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 376 selfloop transitions, 228 changer transitions 0/617 dead transitions. [2024-06-27 22:43:08,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 617 transitions, 11758 flow [2024-06-27 22:43:08,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:08,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:08,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:43:08,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:43:08,795 INFO L175 Difference]: Start difference. First operand has 508 places, 598 transitions, 10158 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:43:08,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 617 transitions, 11758 flow [2024-06-27 22:43:11,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 617 transitions, 11150 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:43:11,015 INFO L231 Difference]: Finished difference. Result has 510 places, 600 transitions, 10072 flow [2024-06-27 22:43:11,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9552, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10072, PETRI_PLACES=510, PETRI_TRANSITIONS=600} [2024-06-27 22:43:11,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 469 predicate places. [2024-06-27 22:43:11,015 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 600 transitions, 10072 flow [2024-06-27 22:43:11,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:11,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:11,016 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 22:43:11,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 22:43:11,016 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:11,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:11,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1311785075, now seen corresponding path program 38 times [2024-06-27 22:43:11,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:11,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725161680] [2024-06-27 22:43:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:11,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:12,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:12,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:12,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725161680] [2024-06-27 22:43:12,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725161680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:12,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:12,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:43:12,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629099532] [2024-06-27 22:43:12,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:12,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:43:12,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:12,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:43:12,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:43:12,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:43:12,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 600 transitions, 10072 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 22:43:12,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:12,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:43:12,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:14,359 INFO L124 PetriNetUnfolderBase]: 2509/5252 cut-off events. [2024-06-27 22:43:14,360 INFO L125 PetriNetUnfolderBase]: For 332285/332354 co-relation queries the response was YES. [2024-06-27 22:43:14,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31968 conditions, 5252 events. 2509/5252 cut-off events. For 332285/332354 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 42690 event pairs, 713 based on Foata normal form. 15/4843 useless extension candidates. Maximal degree in co-relation 31759. Up to 3796 conditions per place. [2024-06-27 22:43:14,448 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 391 selfloop transitions, 212 changer transitions 0/616 dead transitions. [2024-06-27 22:43:14,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 616 transitions, 11334 flow [2024-06-27 22:43:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:14,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:43:14,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 22:43:14,449 INFO L175 Difference]: Start difference. First operand has 510 places, 600 transitions, 10072 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:43:14,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 616 transitions, 11334 flow [2024-06-27 22:43:16,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 616 transitions, 10713 flow, removed 33 selfloop flow, removed 11 redundant places. [2024-06-27 22:43:16,814 INFO L231 Difference]: Finished difference. Result has 509 places, 600 transitions, 9886 flow [2024-06-27 22:43:16,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9451, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9886, PETRI_PLACES=509, PETRI_TRANSITIONS=600} [2024-06-27 22:43:16,815 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 468 predicate places. [2024-06-27 22:43:16,815 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 600 transitions, 9886 flow [2024-06-27 22:43:16,815 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 22:43:16,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:16,815 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 22:43:16,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 22:43:16,815 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:16,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:16,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1311964751, now seen corresponding path program 44 times [2024-06-27 22:43:16,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:16,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482364538] [2024-06-27 22:43:16,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:16,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:18,543 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 22:43:18,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:18,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482364538] [2024-06-27 22:43:18,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482364538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:18,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:18,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:43:18,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772966299] [2024-06-27 22:43:18,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:18,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:43:18,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:18,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:43:18,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:43:18,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:43:18,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 600 transitions, 9886 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 22:43:18,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:18,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:43:18,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:20,299 INFO L124 PetriNetUnfolderBase]: 2523/5287 cut-off events. [2024-06-27 22:43:20,299 INFO L125 PetriNetUnfolderBase]: For 331762/331829 co-relation queries the response was YES. [2024-06-27 22:43:20,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31769 conditions, 5287 events. 2523/5287 cut-off events. For 331762/331829 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 43035 event pairs, 716 based on Foata normal form. 24/4884 useless extension candidates. Maximal degree in co-relation 31562. Up to 3701 conditions per place. [2024-06-27 22:43:20,381 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 379 selfloop transitions, 229 changer transitions 0/621 dead transitions. [2024-06-27 22:43:20,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 621 transitions, 11490 flow [2024-06-27 22:43:20,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:20,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:43:20,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 22:43:20,382 INFO L175 Difference]: Start difference. First operand has 509 places, 600 transitions, 9886 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:43:20,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 621 transitions, 11490 flow [2024-06-27 22:43:22,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 621 transitions, 11053 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 22:43:22,415 INFO L231 Difference]: Finished difference. Result has 510 places, 601 transitions, 9942 flow [2024-06-27 22:43:22,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9449, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9942, PETRI_PLACES=510, PETRI_TRANSITIONS=601} [2024-06-27 22:43:22,416 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 469 predicate places. [2024-06-27 22:43:22,416 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 601 transitions, 9942 flow [2024-06-27 22:43:22,416 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 22:43:22,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:22,416 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 22:43:22,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 22:43:22,416 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:22,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:22,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1305535661, now seen corresponding path program 45 times [2024-06-27 22:43:22,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:22,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142102898] [2024-06-27 22:43:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:22,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:23,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:23,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142102898] [2024-06-27 22:43:23,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142102898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:23,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:23,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:43:23,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521378387] [2024-06-27 22:43:23,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:23,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:43:23,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:23,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:43:23,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:43:23,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:43:23,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 601 transitions, 9942 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:23,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:23,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:43:23,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:25,607 INFO L124 PetriNetUnfolderBase]: 2518/5277 cut-off events. [2024-06-27 22:43:25,607 INFO L125 PetriNetUnfolderBase]: For 316868/316937 co-relation queries the response was YES. [2024-06-27 22:43:25,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31569 conditions, 5277 events. 2518/5277 cut-off events. For 316868/316937 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 42997 event pairs, 767 based on Foata normal form. 18/4867 useless extension candidates. Maximal degree in co-relation 31361. Up to 4047 conditions per place. [2024-06-27 22:43:25,693 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 460 selfloop transitions, 143 changer transitions 0/616 dead transitions. [2024-06-27 22:43:25,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 616 transitions, 11202 flow [2024-06-27 22:43:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:25,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:43:25,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 22:43:25,694 INFO L175 Difference]: Start difference. First operand has 510 places, 601 transitions, 9942 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:43:25,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 616 transitions, 11202 flow [2024-06-27 22:43:27,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 616 transitions, 10717 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 22:43:27,614 INFO L231 Difference]: Finished difference. Result has 512 places, 601 transitions, 9749 flow [2024-06-27 22:43:27,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9457, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9749, PETRI_PLACES=512, PETRI_TRANSITIONS=601} [2024-06-27 22:43:27,614 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 471 predicate places. [2024-06-27 22:43:27,614 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 601 transitions, 9749 flow [2024-06-27 22:43:27,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:27,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:27,615 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 22:43:27,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 22:43:27,615 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:27,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:27,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1305528965, now seen corresponding path program 39 times [2024-06-27 22:43:27,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:27,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974905794] [2024-06-27 22:43:27,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:27,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:29,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974905794] [2024-06-27 22:43:29,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974905794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:29,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:29,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:43:29,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874205852] [2024-06-27 22:43:29,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:29,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:43:29,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:29,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:43:29,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:43:29,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:43:29,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 601 transitions, 9749 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 22:43:29,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:29,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:43:29,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:31,034 INFO L124 PetriNetUnfolderBase]: 2516/5276 cut-off events. [2024-06-27 22:43:31,034 INFO L125 PetriNetUnfolderBase]: For 296344/296411 co-relation queries the response was YES. [2024-06-27 22:43:31,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30807 conditions, 5276 events. 2516/5276 cut-off events. For 296344/296411 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 43016 event pairs, 715 based on Foata normal form. 14/4863 useless extension candidates. Maximal degree in co-relation 30598. Up to 3811 conditions per place. [2024-06-27 22:43:31,120 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 387 selfloop transitions, 217 changer transitions 0/617 dead transitions. [2024-06-27 22:43:31,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 617 transitions, 11013 flow [2024-06-27 22:43:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:43:31,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 22:43:31,121 INFO L175 Difference]: Start difference. First operand has 512 places, 601 transitions, 9749 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:43:31,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 617 transitions, 11013 flow [2024-06-27 22:43:32,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 617 transitions, 10445 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-06-27 22:43:32,995 INFO L231 Difference]: Finished difference. Result has 509 places, 601 transitions, 9626 flow [2024-06-27 22:43:32,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9181, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9626, PETRI_PLACES=509, PETRI_TRANSITIONS=601} [2024-06-27 22:43:32,995 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 468 predicate places. [2024-06-27 22:43:32,996 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 601 transitions, 9626 flow [2024-06-27 22:43:32,996 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 22:43:32,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:32,996 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 22:43:32,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 22:43:32,996 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:32,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:32,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1311964565, now seen corresponding path program 40 times [2024-06-27 22:43:32,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:32,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439220179] [2024-06-27 22:43:32,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:32,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:34,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:34,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:34,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439220179] [2024-06-27 22:43:34,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439220179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:34,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:34,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:43:34,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225031929] [2024-06-27 22:43:34,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:34,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:43:34,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:34,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:43:34,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:43:34,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 22:43:34,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 601 transitions, 9626 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 22:43:34,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:34,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 22:43:34,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:36,333 INFO L124 PetriNetUnfolderBase]: 2441/5102 cut-off events. [2024-06-27 22:43:36,333 INFO L125 PetriNetUnfolderBase]: For 170192/170254 co-relation queries the response was YES. [2024-06-27 22:43:36,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28166 conditions, 5102 events. 2441/5102 cut-off events. For 170192/170254 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 41232 event pairs, 672 based on Foata normal form. 16/4701 useless extension candidates. Maximal degree in co-relation 27958. Up to 3544 conditions per place. [2024-06-27 22:43:36,414 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 370 selfloop transitions, 234 changer transitions 0/617 dead transitions. [2024-06-27 22:43:36,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 617 transitions, 10890 flow [2024-06-27 22:43:36,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:43:36,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:43:36,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:43:36,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 22:43:36,415 INFO L175 Difference]: Start difference. First operand has 509 places, 601 transitions, 9626 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:43:36,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 617 transitions, 10890 flow [2024-06-27 22:43:37,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 617 transitions, 10313 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-27 22:43:37,678 INFO L231 Difference]: Finished difference. Result has 509 places, 601 transitions, 9525 flow [2024-06-27 22:43:37,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9049, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9525, PETRI_PLACES=509, PETRI_TRANSITIONS=601} [2024-06-27 22:43:37,678 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 468 predicate places. [2024-06-27 22:43:37,679 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 601 transitions, 9525 flow [2024-06-27 22:43:37,679 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 22:43:37,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:37,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:37,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 22:43:37,679 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:37,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:37,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2135887570, now seen corresponding path program 1 times [2024-06-27 22:43:37,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:37,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462526059] [2024-06-27 22:43:37,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:37,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:39,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:39,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462526059] [2024-06-27 22:43:39,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462526059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:39,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:39,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:43:39,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418468131] [2024-06-27 22:43:39,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:39,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:43:39,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:39,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:43:39,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:43:39,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:43:39,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 601 transitions, 9525 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:39,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:39,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:43:39,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:41,637 INFO L124 PetriNetUnfolderBase]: 3176/6218 cut-off events. [2024-06-27 22:43:41,637 INFO L125 PetriNetUnfolderBase]: For 329829/329829 co-relation queries the response was YES. [2024-06-27 22:43:41,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35248 conditions, 6218 events. 3176/6218 cut-off events. For 329829/329829 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 48495 event pairs, 1043 based on Foata normal form. 8/5785 useless extension candidates. Maximal degree in co-relation 35040. Up to 2478 conditions per place. [2024-06-27 22:43:41,729 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 414 selfloop transitions, 230 changer transitions 0/652 dead transitions. [2024-06-27 22:43:41,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 652 transitions, 11369 flow [2024-06-27 22:43:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:43:41,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:43:41,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 213 transitions. [2024-06-27 22:43:41,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-27 22:43:41,730 INFO L175 Difference]: Start difference. First operand has 509 places, 601 transitions, 9525 flow. Second operand 12 states and 213 transitions. [2024-06-27 22:43:41,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 652 transitions, 11369 flow [2024-06-27 22:43:43,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 652 transitions, 10694 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-27 22:43:43,719 INFO L231 Difference]: Finished difference. Result has 510 places, 601 transitions, 9317 flow [2024-06-27 22:43:43,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8854, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9317, PETRI_PLACES=510, PETRI_TRANSITIONS=601} [2024-06-27 22:43:43,719 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 469 predicate places. [2024-06-27 22:43:43,719 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 601 transitions, 9317 flow [2024-06-27 22:43:43,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:43,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:43,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:43,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 22:43:43,720 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:43,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:43,720 INFO L85 PathProgramCache]: Analyzing trace with hash -358213776, now seen corresponding path program 2 times [2024-06-27 22:43:43,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:43,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23784326] [2024-06-27 22:43:43,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:43,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:45,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:45,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:45,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23784326] [2024-06-27 22:43:45,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23784326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:45,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:45,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:43:45,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633429397] [2024-06-27 22:43:45,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:45,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:43:45,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:45,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:43:45,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:43:45,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:43:45,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 601 transitions, 9317 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:45,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:45,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:43:45,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:47,695 INFO L124 PetriNetUnfolderBase]: 3314/6537 cut-off events. [2024-06-27 22:43:47,695 INFO L125 PetriNetUnfolderBase]: For 423283/423283 co-relation queries the response was YES. [2024-06-27 22:43:47,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37425 conditions, 6537 events. 3314/6537 cut-off events. For 423283/423283 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 51904 event pairs, 1130 based on Foata normal form. 8/6091 useless extension candidates. Maximal degree in co-relation 37218. Up to 4233 conditions per place. [2024-06-27 22:43:47,802 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 410 selfloop transitions, 230 changer transitions 0/648 dead transitions. [2024-06-27 22:43:47,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 648 transitions, 11125 flow [2024-06-27 22:43:47,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:43:47,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:43:47,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2024-06-27 22:43:47,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 22:43:47,803 INFO L175 Difference]: Start difference. First operand has 510 places, 601 transitions, 9317 flow. Second operand 12 states and 212 transitions. [2024-06-27 22:43:47,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 648 transitions, 11125 flow [2024-06-27 22:43:50,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 648 transitions, 10656 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 22:43:50,264 INFO L231 Difference]: Finished difference. Result has 511 places, 601 transitions, 9311 flow [2024-06-27 22:43:50,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8848, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9311, PETRI_PLACES=511, PETRI_TRANSITIONS=601} [2024-06-27 22:43:50,264 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 470 predicate places. [2024-06-27 22:43:50,264 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 601 transitions, 9311 flow [2024-06-27 22:43:50,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:50,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:50,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:50,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 22:43:50,264 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:50,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:50,265 INFO L85 PathProgramCache]: Analyzing trace with hash -593842708, now seen corresponding path program 3 times [2024-06-27 22:43:50,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:50,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416048515] [2024-06-27 22:43:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:50,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:51,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:51,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416048515] [2024-06-27 22:43:51,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416048515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:51,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:51,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:43:51,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415929330] [2024-06-27 22:43:51,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:51,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:43:51,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:51,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:43:51,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:43:52,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:43:52,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 601 transitions, 9311 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:52,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:52,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:43:52,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:54,309 INFO L124 PetriNetUnfolderBase]: 3281/6546 cut-off events. [2024-06-27 22:43:54,309 INFO L125 PetriNetUnfolderBase]: For 329819/329819 co-relation queries the response was YES. [2024-06-27 22:43:54,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35634 conditions, 6546 events. 3281/6546 cut-off events. For 329819/329819 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 52240 event pairs, 1177 based on Foata normal form. 10/6090 useless extension candidates. Maximal degree in co-relation 35427. Up to 4505 conditions per place. [2024-06-27 22:43:54,397 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 394 selfloop transitions, 230 changer transitions 0/632 dead transitions. [2024-06-27 22:43:54,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 632 transitions, 10705 flow [2024-06-27 22:43:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:43:54,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:43:54,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-06-27 22:43:54,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2024-06-27 22:43:54,398 INFO L175 Difference]: Start difference. First operand has 511 places, 601 transitions, 9311 flow. Second operand 12 states and 194 transitions. [2024-06-27 22:43:54,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 632 transitions, 10705 flow [2024-06-27 22:43:56,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 632 transitions, 10246 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:43:56,209 INFO L231 Difference]: Finished difference. Result has 513 places, 601 transitions, 9316 flow [2024-06-27 22:43:56,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8852, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9316, PETRI_PLACES=513, PETRI_TRANSITIONS=601} [2024-06-27 22:43:56,209 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 472 predicate places. [2024-06-27 22:43:56,210 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 601 transitions, 9316 flow [2024-06-27 22:43:56,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:56,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:56,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:56,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 22:43:56,210 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:56,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:56,210 INFO L85 PathProgramCache]: Analyzing trace with hash -354494706, now seen corresponding path program 4 times [2024-06-27 22:43:56,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:56,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559711741] [2024-06-27 22:43:56,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:56,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:58,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:58,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559711741] [2024-06-27 22:43:58,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559711741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:58,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:58,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:43:58,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898448842] [2024-06-27 22:43:58,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:58,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:43:58,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:58,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:43:58,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:43:58,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:43:58,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 601 transitions, 9316 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 22:43:58,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:58,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:43:58,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:01,064 INFO L124 PetriNetUnfolderBase]: 3355/6725 cut-off events. [2024-06-27 22:44:01,065 INFO L125 PetriNetUnfolderBase]: For 334248/334248 co-relation queries the response was YES. [2024-06-27 22:44:01,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36476 conditions, 6725 events. 3355/6725 cut-off events. For 334248/334248 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 54094 event pairs, 1202 based on Foata normal form. 8/6270 useless extension candidates. Maximal degree in co-relation 36268. Up to 4121 conditions per place. [2024-06-27 22:44:01,174 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 383 selfloop transitions, 256 changer transitions 0/647 dead transitions. [2024-06-27 22:44:01,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 647 transitions, 11156 flow [2024-06-27 22:44:01,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 22:44:01,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 22:44:01,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 248 transitions. [2024-06-27 22:44:01,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44684684684684683 [2024-06-27 22:44:01,175 INFO L175 Difference]: Start difference. First operand has 513 places, 601 transitions, 9316 flow. Second operand 15 states and 248 transitions. [2024-06-27 22:44:01,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 647 transitions, 11156 flow [2024-06-27 22:44:03,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 647 transitions, 10698 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:44:03,607 INFO L231 Difference]: Finished difference. Result has 518 places, 601 transitions, 9377 flow [2024-06-27 22:44:03,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8858, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9377, PETRI_PLACES=518, PETRI_TRANSITIONS=601} [2024-06-27 22:44:03,608 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 477 predicate places. [2024-06-27 22:44:03,608 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 601 transitions, 9377 flow [2024-06-27 22:44:03,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 22:44:03,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:03,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:03,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 22:44:03,608 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:03,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:03,609 INFO L85 PathProgramCache]: Analyzing trace with hash -354638856, now seen corresponding path program 5 times [2024-06-27 22:44:03,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:03,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457050762] [2024-06-27 22:44:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:03,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:05,426 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 22:44:05,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:05,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457050762] [2024-06-27 22:44:05,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457050762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:05,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:05,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:44:05,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476833240] [2024-06-27 22:44:05,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:05,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:44:05,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:05,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:44:05,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:44:05,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:44:05,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 601 transitions, 9377 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:05,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:05,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:44:05,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:07,795 INFO L124 PetriNetUnfolderBase]: 3463/6961 cut-off events. [2024-06-27 22:44:07,796 INFO L125 PetriNetUnfolderBase]: For 339208/339208 co-relation queries the response was YES. [2024-06-27 22:44:07,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37362 conditions, 6961 events. 3463/6961 cut-off events. For 339208/339208 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 56702 event pairs, 1317 based on Foata normal form. 8/6493 useless extension candidates. Maximal degree in co-relation 37153. Up to 4980 conditions per place. [2024-06-27 22:44:07,903 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 478 selfloop transitions, 157 changer transitions 0/643 dead transitions. [2024-06-27 22:44:07,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 643 transitions, 10871 flow [2024-06-27 22:44:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:44:07,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:44:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-27 22:44:07,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48402948402948404 [2024-06-27 22:44:07,904 INFO L175 Difference]: Start difference. First operand has 518 places, 601 transitions, 9377 flow. Second operand 11 states and 197 transitions. [2024-06-27 22:44:07,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 643 transitions, 10871 flow [2024-06-27 22:44:10,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 643 transitions, 10578 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:44:10,430 INFO L231 Difference]: Finished difference. Result has 519 places, 601 transitions, 9401 flow [2024-06-27 22:44:10,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9084, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9401, PETRI_PLACES=519, PETRI_TRANSITIONS=601} [2024-06-27 22:44:10,431 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 478 predicate places. [2024-06-27 22:44:10,431 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 601 transitions, 9401 flow [2024-06-27 22:44:10,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:10,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:10,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:10,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 22:44:10,431 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:10,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:10,432 INFO L85 PathProgramCache]: Analyzing trace with hash -540724180, now seen corresponding path program 6 times [2024-06-27 22:44:10,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:10,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984347533] [2024-06-27 22:44:10,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:10,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:12,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:12,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984347533] [2024-06-27 22:44:12,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984347533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:12,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:12,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:44:12,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328112822] [2024-06-27 22:44:12,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:12,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:44:12,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:12,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:44:12,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:44:12,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:44:12,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 601 transitions, 9401 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 22:44:12,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:12,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:44:12,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:14,872 INFO L124 PetriNetUnfolderBase]: 3534/7135 cut-off events. [2024-06-27 22:44:14,872 INFO L125 PetriNetUnfolderBase]: For 365050/365050 co-relation queries the response was YES. [2024-06-27 22:44:14,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37865 conditions, 7135 events. 3534/7135 cut-off events. For 365050/365050 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 58778 event pairs, 1408 based on Foata normal form. 10/6659 useless extension candidates. Maximal degree in co-relation 37655. Up to 5514 conditions per place. [2024-06-27 22:44:14,968 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 445 selfloop transitions, 177 changer transitions 0/630 dead transitions. [2024-06-27 22:44:14,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 630 transitions, 10833 flow [2024-06-27 22:44:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:44:14,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:44:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-27 22:44:14,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 22:44:14,969 INFO L175 Difference]: Start difference. First operand has 519 places, 601 transitions, 9401 flow. Second operand 12 states and 192 transitions. [2024-06-27 22:44:14,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 630 transitions, 10833 flow [2024-06-27 22:44:17,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 630 transitions, 10520 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:44:17,190 INFO L231 Difference]: Finished difference. Result has 522 places, 601 transitions, 9446 flow [2024-06-27 22:44:17,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9088, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9446, PETRI_PLACES=522, PETRI_TRANSITIONS=601} [2024-06-27 22:44:17,191 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 481 predicate places. [2024-06-27 22:44:17,191 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 601 transitions, 9446 flow [2024-06-27 22:44:17,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 22:44:17,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:17,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:17,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 22:44:17,191 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:17,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:17,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1379807352, now seen corresponding path program 7 times [2024-06-27 22:44:17,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:17,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086835035] [2024-06-27 22:44:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:17,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:18,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:18,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:18,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086835035] [2024-06-27 22:44:18,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086835035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:18,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:18,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:44:18,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096971412] [2024-06-27 22:44:18,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:18,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:44:18,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:18,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:44:18,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:44:19,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:44:19,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 601 transitions, 9446 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:19,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:19,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:44:19,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:21,272 INFO L124 PetriNetUnfolderBase]: 3551/7178 cut-off events. [2024-06-27 22:44:21,273 INFO L125 PetriNetUnfolderBase]: For 369865/369865 co-relation queries the response was YES. [2024-06-27 22:44:21,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37960 conditions, 7178 events. 3551/7178 cut-off events. For 369865/369865 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 59264 event pairs, 1441 based on Foata normal form. 10/6699 useless extension candidates. Maximal degree in co-relation 37749. Up to 5774 conditions per place. [2024-06-27 22:44:21,388 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 498 selfloop transitions, 124 changer transitions 0/630 dead transitions. [2024-06-27 22:44:21,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 630 transitions, 10878 flow [2024-06-27 22:44:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:44:21,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:44:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:44:21,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-27 22:44:21,389 INFO L175 Difference]: Start difference. First operand has 522 places, 601 transitions, 9446 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:44:21,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 630 transitions, 10878 flow [2024-06-27 22:44:23,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 630 transitions, 10526 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:44:23,959 INFO L231 Difference]: Finished difference. Result has 523 places, 601 transitions, 9346 flow [2024-06-27 22:44:23,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9094, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9346, PETRI_PLACES=523, PETRI_TRANSITIONS=601} [2024-06-27 22:44:23,960 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 482 predicate places. [2024-06-27 22:44:23,960 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 601 transitions, 9346 flow [2024-06-27 22:44:23,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:23,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:23,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:23,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 22:44:23,961 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:23,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:23,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1374295242, now seen corresponding path program 8 times [2024-06-27 22:44:23,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:23,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240994657] [2024-06-27 22:44:23,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:23,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:25,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:25,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240994657] [2024-06-27 22:44:25,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240994657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:25,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:25,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:44:25,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846410685] [2024-06-27 22:44:25,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:25,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:44:25,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:44:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:44:25,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:44:25,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 601 transitions, 9346 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:25,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:25,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:44:25,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:28,377 INFO L124 PetriNetUnfolderBase]: 3634/7300 cut-off events. [2024-06-27 22:44:28,377 INFO L125 PetriNetUnfolderBase]: For 373946/373946 co-relation queries the response was YES. [2024-06-27 22:44:28,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38645 conditions, 7300 events. 3634/7300 cut-off events. For 373946/373946 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 60284 event pairs, 1417 based on Foata normal form. 8/6823 useless extension candidates. Maximal degree in co-relation 38433. Up to 5825 conditions per place. [2024-06-27 22:44:28,486 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 511 selfloop transitions, 130 changer transitions 0/649 dead transitions. [2024-06-27 22:44:28,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 649 transitions, 11259 flow [2024-06-27 22:44:28,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:44:28,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:44:28,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-27 22:44:28,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-27 22:44:28,487 INFO L175 Difference]: Start difference. First operand has 523 places, 601 transitions, 9346 flow. Second operand 12 states and 205 transitions. [2024-06-27 22:44:28,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 649 transitions, 11259 flow [2024-06-27 22:44:31,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 649 transitions, 11012 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:44:31,174 INFO L231 Difference]: Finished difference. Result has 530 places, 613 transitions, 9546 flow [2024-06-27 22:44:31,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9100, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9546, PETRI_PLACES=530, PETRI_TRANSITIONS=613} [2024-06-27 22:44:31,174 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 489 predicate places. [2024-06-27 22:44:31,174 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 613 transitions, 9546 flow [2024-06-27 22:44:31,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:31,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:31,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:31,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 22:44:31,175 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:31,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:31,175 INFO L85 PathProgramCache]: Analyzing trace with hash 174332506, now seen corresponding path program 9 times [2024-06-27 22:44:31,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:31,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968767483] [2024-06-27 22:44:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:31,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:33,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:33,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968767483] [2024-06-27 22:44:33,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968767483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:33,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:33,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:44:33,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137064203] [2024-06-27 22:44:33,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:33,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:44:33,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:33,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:44:33,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:44:33,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:44:33,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 613 transitions, 9546 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:33,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:33,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:44:33,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:35,611 INFO L124 PetriNetUnfolderBase]: 3689/7486 cut-off events. [2024-06-27 22:44:35,611 INFO L125 PetriNetUnfolderBase]: For 387090/387090 co-relation queries the response was YES. [2024-06-27 22:44:35,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39657 conditions, 7486 events. 3689/7486 cut-off events. For 387090/387090 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 62605 event pairs, 1465 based on Foata normal form. 10/6994 useless extension candidates. Maximal degree in co-relation 39440. Up to 5763 conditions per place. [2024-06-27 22:44:35,747 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 456 selfloop transitions, 184 changer transitions 0/648 dead transitions. [2024-06-27 22:44:35,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 648 transitions, 11081 flow [2024-06-27 22:44:35,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:44:35,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:44:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-27 22:44:35,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 22:44:35,748 INFO L175 Difference]: Start difference. First operand has 530 places, 613 transitions, 9546 flow. Second operand 12 states and 196 transitions. [2024-06-27 22:44:35,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 648 transitions, 11081 flow [2024-06-27 22:44:38,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 648 transitions, 10816 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-27 22:44:38,274 INFO L231 Difference]: Finished difference. Result has 536 places, 613 transitions, 9684 flow [2024-06-27 22:44:38,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9311, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9684, PETRI_PLACES=536, PETRI_TRANSITIONS=613} [2024-06-27 22:44:38,275 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 495 predicate places. [2024-06-27 22:44:38,275 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 613 transitions, 9684 flow [2024-06-27 22:44:38,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:38,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:38,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:38,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 22:44:38,275 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:38,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:38,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1232192172, now seen corresponding path program 10 times [2024-06-27 22:44:38,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:38,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601484957] [2024-06-27 22:44:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:38,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:39,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:39,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601484957] [2024-06-27 22:44:39,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601484957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:39,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:39,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:44:39,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207738273] [2024-06-27 22:44:39,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:39,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:44:39,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:39,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:44:39,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:44:39,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:44:39,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 613 transitions, 9684 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:39,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:39,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:44:39,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:42,641 INFO L124 PetriNetUnfolderBase]: 3905/7932 cut-off events. [2024-06-27 22:44:42,642 INFO L125 PetriNetUnfolderBase]: For 524115/524115 co-relation queries the response was YES. [2024-06-27 22:44:42,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42831 conditions, 7932 events. 3905/7932 cut-off events. For 524115/524115 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 67404 event pairs, 1619 based on Foata normal form. 8/7439 useless extension candidates. Maximal degree in co-relation 42614. Up to 5294 conditions per place. [2024-06-27 22:44:42,771 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 522 selfloop transitions, 130 changer transitions 0/660 dead transitions. [2024-06-27 22:44:42,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 660 transitions, 11588 flow [2024-06-27 22:44:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:44:42,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:44:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 22:44:42,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914004914004914 [2024-06-27 22:44:42,772 INFO L175 Difference]: Start difference. First operand has 536 places, 613 transitions, 9684 flow. Second operand 11 states and 200 transitions. [2024-06-27 22:44:42,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 660 transitions, 11588 flow [2024-06-27 22:44:46,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 660 transitions, 11219 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 22:44:46,416 INFO L231 Difference]: Finished difference. Result has 537 places, 613 transitions, 9578 flow [2024-06-27 22:44:46,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9315, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9578, PETRI_PLACES=537, PETRI_TRANSITIONS=613} [2024-06-27 22:44:46,416 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 496 predicate places. [2024-06-27 22:44:46,416 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 613 transitions, 9578 flow [2024-06-27 22:44:46,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:46,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:46,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:46,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 22:44:46,417 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:46,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:46,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1235767092, now seen corresponding path program 11 times [2024-06-27 22:44:46,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:46,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622947150] [2024-06-27 22:44:46,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:46,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:48,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:48,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622947150] [2024-06-27 22:44:48,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622947150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:48,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:48,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:44:48,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932706123] [2024-06-27 22:44:48,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:48,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:44:48,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:48,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:44:48,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:44:48,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:44:48,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 613 transitions, 9578 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 22:44:48,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:48,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:44:48,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:51,117 INFO L124 PetriNetUnfolderBase]: 3948/8094 cut-off events. [2024-06-27 22:44:51,117 INFO L125 PetriNetUnfolderBase]: For 440026/440026 co-relation queries the response was YES. [2024-06-27 22:44:51,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41906 conditions, 8094 events. 3948/8094 cut-off events. For 440026/440026 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 69433 event pairs, 1635 based on Foata normal form. 8/7580 useless extension candidates. Maximal degree in co-relation 41688. Up to 5944 conditions per place. [2024-06-27 22:44:51,266 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 467 selfloop transitions, 183 changer transitions 0/658 dead transitions. [2024-06-27 22:44:51,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 658 transitions, 11464 flow [2024-06-27 22:44:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:44:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:44:51,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-27 22:44:51,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47072072072072074 [2024-06-27 22:44:51,267 INFO L175 Difference]: Start difference. First operand has 537 places, 613 transitions, 9578 flow. Second operand 12 states and 209 transitions. [2024-06-27 22:44:51,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 658 transitions, 11464 flow [2024-06-27 22:44:54,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 658 transitions, 11205 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:44:54,472 INFO L231 Difference]: Finished difference. Result has 540 places, 613 transitions, 9688 flow [2024-06-27 22:44:54,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9319, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9688, PETRI_PLACES=540, PETRI_TRANSITIONS=613} [2024-06-27 22:44:54,473 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 499 predicate places. [2024-06-27 22:44:54,473 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 613 transitions, 9688 flow [2024-06-27 22:44:54,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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 22:44:54,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:54,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:54,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 22:44:54,474 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:54,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:54,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1235916822, now seen corresponding path program 12 times [2024-06-27 22:44:54,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:54,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20694471] [2024-06-27 22:44:54,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:54,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:56,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:56,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20694471] [2024-06-27 22:44:56,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20694471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:56,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:56,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:44:56,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764496037] [2024-06-27 22:44:56,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:56,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:44:56,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:56,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:44:56,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:44:56,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:44:56,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 613 transitions, 9688 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:56,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:56,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:44:56,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:58,731 INFO L124 PetriNetUnfolderBase]: 3899/7934 cut-off events. [2024-06-27 22:44:58,731 INFO L125 PetriNetUnfolderBase]: For 355114/355114 co-relation queries the response was YES. [2024-06-27 22:44:58,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41485 conditions, 7934 events. 3899/7934 cut-off events. For 355114/355114 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 67604 event pairs, 1640 based on Foata normal form. 2/7424 useless extension candidates. Maximal degree in co-relation 41266. Up to 6319 conditions per place. [2024-06-27 22:44:58,857 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 451 selfloop transitions, 187 changer transitions 0/646 dead transitions. [2024-06-27 22:44:58,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 646 transitions, 11208 flow [2024-06-27 22:44:58,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:44:58,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:44:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:44:58,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 22:44:58,858 INFO L175 Difference]: Start difference. First operand has 540 places, 613 transitions, 9688 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:44:58,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 646 transitions, 11208 flow [2024-06-27 22:45:01,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 646 transitions, 10837 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:45:01,785 INFO L231 Difference]: Finished difference. Result has 543 places, 620 transitions, 9819 flow [2024-06-27 22:45:01,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9323, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9819, PETRI_PLACES=543, PETRI_TRANSITIONS=620} [2024-06-27 22:45:01,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 502 predicate places. [2024-06-27 22:45:01,785 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 620 transitions, 9819 flow [2024-06-27 22:45:01,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:01,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:01,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:01,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 22:45:01,785 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:01,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:01,786 INFO L85 PathProgramCache]: Analyzing trace with hash -102399158, now seen corresponding path program 13 times [2024-06-27 22:45:01,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:01,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161722218] [2024-06-27 22:45:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:01,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:03,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:03,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161722218] [2024-06-27 22:45:03,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161722218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:03,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:03,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:45:03,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39856619] [2024-06-27 22:45:03,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:03,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:45:03,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:03,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:45:03,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:45:03,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 22:45:03,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 620 transitions, 9819 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:03,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:03,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 22:45:03,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:06,164 INFO L124 PetriNetUnfolderBase]: 3939/7962 cut-off events. [2024-06-27 22:45:06,164 INFO L125 PetriNetUnfolderBase]: For 480361/480361 co-relation queries the response was YES. [2024-06-27 22:45:06,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43826 conditions, 7962 events. 3939/7962 cut-off events. For 480361/480361 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 67510 event pairs, 1567 based on Foata normal form. 8/7470 useless extension candidates. Maximal degree in co-relation 43604. Up to 5342 conditions per place. [2024-06-27 22:45:06,298 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 490 selfloop transitions, 174 changer transitions 0/672 dead transitions. [2024-06-27 22:45:06,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 672 transitions, 11809 flow [2024-06-27 22:45:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:45:06,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:45:06,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-27 22:45:06,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085995085995086 [2024-06-27 22:45:06,299 INFO L175 Difference]: Start difference. First operand has 543 places, 620 transitions, 9819 flow. Second operand 11 states and 207 transitions. [2024-06-27 22:45:06,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 672 transitions, 11809 flow Killed by 15