./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi004.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/rfi004.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/rfi004.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi004.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 22:31:59,856 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:31:59,932 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:31:59,938 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:31:59,938 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:31:59,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:31:59,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:31:59,968 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:31:59,968 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:31:59,972 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:31:59,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:31:59,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:31:59,973 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:31:59,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:31:59,974 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:31:59,974 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:31:59,974 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:31:59,975 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:31:59,975 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:31:59,975 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:31:59,975 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:31:59,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:31:59,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:31:59,976 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:31:59,976 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:31:59,976 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:31:59,976 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:31:59,977 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:31:59,977 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:31:59,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:31:59,978 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:31:59,978 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:31:59,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:31:59,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:31:59,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:31:59,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:31:59,979 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:31:59,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:31:59,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:31:59,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:31:59,980 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:31:59,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:31:59,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:31:59,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:32:00,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:32:00,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:32:00,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:32:00,228 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:32:00,228 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:32:00,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-27 22:32:01,302 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:32:01,554 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:32:01,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-27 22:32:01,570 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4102b5688/b0c5c903698d4d738bb6fec9a09678cb/FLAG23b5aa07a [2024-06-27 22:32:01,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4102b5688/b0c5c903698d4d738bb6fec9a09678cb [2024-06-27 22:32:01,586 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:32:01,587 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:32:01,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi004.yml/witness.yml [2024-06-27 22:32:01,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:32:01,643 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:32:01,644 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:32:01,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:32:01,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:32:01,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:32:01" (1/2) ... [2024-06-27 22:32:01,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10312226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:01, skipping insertion in model container [2024-06-27 22:32:01,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:32:01" (1/2) ... [2024-06-27 22:32:01,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@f5647ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:32:01, skipping insertion in model container [2024-06-27 22:32:01,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:32:01" (2/2) ... [2024-06-27 22:32:01,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10312226 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:01, skipping insertion in model container [2024-06-27 22:32:01,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:32:01" (2/2) ... [2024-06-27 22:32:01,653 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:32:01,675 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:32:01,676 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:32:01,676 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:32:01,676 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:32:01,676 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-27 22:32:01,713 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:32:01,865 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/rfi004.i[983,996] [2024-06-27 22:32:01,975 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:32:01,986 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:32:02,014 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/rfi004.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:32:02,128 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:32:02,162 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:32:02,163 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:02 WrapperNode [2024-06-27 22:32:02,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:32:02,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:32:02,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:32:02,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:32:02,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:02" (1/1) ... [2024-06-27 22:32:02,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:02" (1/1) ... [2024-06-27 22:32:02,227 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 117 [2024-06-27 22:32:02,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:32:02,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:32:02,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:32:02,232 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:32:02,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:02" (1/1) ... [2024-06-27 22:32:02,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:02" (1/1) ... [2024-06-27 22:32:02,285 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:02" (1/1) ... [2024-06-27 22:32:02,309 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 22:32:02,310 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:02" (1/1) ... [2024-06-27 22:32:02,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:02" (1/1) ... [2024-06-27 22:32:02,337 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:02" (1/1) ... [2024-06-27 22:32:02,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:02" (1/1) ... [2024-06-27 22:32:02,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:02" (1/1) ... [2024-06-27 22:32:02,347 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:02" (1/1) ... [2024-06-27 22:32:02,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:32:02,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:32:02,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:32:02,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:32:02,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:02" (1/1) ... [2024-06-27 22:32:02,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:32:02,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:32:02,382 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 22:32:02,414 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 22:32:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:32:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:32:02,445 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:32:02,445 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:32:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:32:02,446 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:32:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:32:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:32:02,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:32:02,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:32:02,447 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 22:32:02,541 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:32:02,543 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:32:02,813 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:32:02,813 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:32:02,922 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:32:02,922 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:32:02,922 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:32:02 BoogieIcfgContainer [2024-06-27 22:32:02,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:32:02,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:32:02,925 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:32:02,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:32:02,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:32:01" (1/4) ... [2024-06-27 22:32:02,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76836101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:32:02, skipping insertion in model container [2024-06-27 22:32:02,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:32:01" (2/4) ... [2024-06-27 22:32:02,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76836101 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:32:02, skipping insertion in model container [2024-06-27 22:32:02,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:32:02" (3/4) ... [2024-06-27 22:32:02,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76836101 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:32:02, skipping insertion in model container [2024-06-27 22:32:02,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:32:02" (4/4) ... [2024-06-27 22:32:02,930 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi004.i [2024-06-27 22:32:02,942 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:32:02,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:32:02,943 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:32:02,982 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:32:03,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-06-27 22:32:03,042 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-06-27 22:32:03,042 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:32:03,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-06-27 22:32:03,045 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-06-27 22:32:03,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-06-27 22:32:03,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:32:03,072 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;@13f0e499, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:32:03,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:32:03,077 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:32:03,078 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:32:03,078 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:32:03,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:03,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:32:03,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:03,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:03,083 INFO L85 PathProgramCache]: Analyzing trace with hash 311867539, now seen corresponding path program 1 times [2024-06-27 22:32:03,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:03,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982012235] [2024-06-27 22:32:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:03,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:04,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:04,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982012235] [2024-06-27 22:32:04,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982012235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:04,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:04,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:32:04,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766952011] [2024-06-27 22:32:04,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:04,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:32:04,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:04,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:32:04,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:32:04,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-27 22:32:04,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:04,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:04,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-27 22:32:04,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:04,525 INFO L124 PetriNetUnfolderBase]: 372/704 cut-off events. [2024-06-27 22:32:04,525 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 22:32:04,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 704 events. 372/704 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3735 event pairs, 160 based on Foata normal form. 35/692 useless extension candidates. Maximal degree in co-relation 1338. Up to 620 conditions per place. [2024-06-27 22:32:04,548 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 29 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2024-06-27 22:32:04,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 163 flow [2024-06-27 22:32:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:32:04,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:32:04,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-27 22:32:04,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2024-06-27 22:32:04,561 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 82 transitions. [2024-06-27 22:32:04,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 163 flow [2024-06-27 22:32:04,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:04,566 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 97 flow [2024-06-27 22:32:04,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-06-27 22:32:04,570 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-27 22:32:04,570 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 97 flow [2024-06-27 22:32:04,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:04,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:04,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:04,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:32:04,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:04,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:04,572 INFO L85 PathProgramCache]: Analyzing trace with hash -942147624, now seen corresponding path program 1 times [2024-06-27 22:32:04,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:04,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349125738] [2024-06-27 22:32:04,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:04,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:05,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:05,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:05,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349125738] [2024-06-27 22:32:05,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349125738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:05,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:05,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:32:05,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77896831] [2024-06-27 22:32:05,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:05,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:32:05,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:05,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:32:05,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:32:05,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-27 22:32:05,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:05,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:05,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-27 22:32:05,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:05,394 INFO L124 PetriNetUnfolderBase]: 414/841 cut-off events. [2024-06-27 22:32:05,395 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-06-27 22:32:05,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 841 events. 414/841 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4737 event pairs, 265 based on Foata normal form. 2/787 useless extension candidates. Maximal degree in co-relation 1702. Up to 671 conditions per place. [2024-06-27 22:32:05,399 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 38 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-27 22:32:05,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 225 flow [2024-06-27 22:32:05,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:32:05,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:32:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-27 22:32:05,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6710526315789473 [2024-06-27 22:32:05,401 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 97 flow. Second operand 4 states and 102 transitions. [2024-06-27 22:32:05,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 225 flow [2024-06-27 22:32:05,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:05,403 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 123 flow [2024-06-27 22:32:05,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-27 22:32:05,404 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-27 22:32:05,404 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 123 flow [2024-06-27 22:32:05,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:05,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:05,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:05,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:32:05,405 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:05,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:05,405 INFO L85 PathProgramCache]: Analyzing trace with hash 834256823, now seen corresponding path program 1 times [2024-06-27 22:32:05,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:05,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053002189] [2024-06-27 22:32:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:05,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:06,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:06,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053002189] [2024-06-27 22:32:06,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053002189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:06,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:06,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:32:06,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465984623] [2024-06-27 22:32:06,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:06,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:32:06,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:06,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:32:06,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:32:06,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-27 22:32:06,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:06,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:06,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-27 22:32:06,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:06,713 INFO L124 PetriNetUnfolderBase]: 398/744 cut-off events. [2024-06-27 22:32:06,713 INFO L125 PetriNetUnfolderBase]: For 295/295 co-relation queries the response was YES. [2024-06-27 22:32:06,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1725 conditions, 744 events. 398/744 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3876 event pairs, 100 based on Foata normal form. 2/721 useless extension candidates. Maximal degree in co-relation 1711. Up to 629 conditions per place. [2024-06-27 22:32:06,717 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 46 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2024-06-27 22:32:06,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 291 flow [2024-06-27 22:32:06,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:06,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-27 22:32:06,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6631578947368421 [2024-06-27 22:32:06,719 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 123 flow. Second operand 5 states and 126 transitions. [2024-06-27 22:32:06,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 291 flow [2024-06-27 22:32:06,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 282 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:06,721 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 149 flow [2024-06-27 22:32:06,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2024-06-27 22:32:06,722 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-27 22:32:06,722 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 149 flow [2024-06-27 22:32:06,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:06,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:06,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:06,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:32:06,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:06,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:06,723 INFO L85 PathProgramCache]: Analyzing trace with hash 625944874, now seen corresponding path program 1 times [2024-06-27 22:32:06,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:06,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818398654] [2024-06-27 22:32:06,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:06,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:07,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:07,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818398654] [2024-06-27 22:32:07,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818398654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:07,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:07,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:32:07,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836060593] [2024-06-27 22:32:07,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:07,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:32:07,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:32:07,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:32:07,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:32:07,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:07,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:07,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:32:07,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:07,868 INFO L124 PetriNetUnfolderBase]: 457/913 cut-off events. [2024-06-27 22:32:07,869 INFO L125 PetriNetUnfolderBase]: For 622/622 co-relation queries the response was YES. [2024-06-27 22:32:07,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2171 conditions, 913 events. 457/913 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5130 event pairs, 278 based on Foata normal form. 1/864 useless extension candidates. Maximal degree in co-relation 2155. Up to 753 conditions per place. [2024-06-27 22:32:07,874 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 37 selfloop transitions, 10 changer transitions 0/57 dead transitions. [2024-06-27 22:32:07,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 295 flow [2024-06-27 22:32:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:32:07,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:32:07,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-06-27 22:32:07,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368421052631579 [2024-06-27 22:32:07,875 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 149 flow. Second operand 5 states and 102 transitions. [2024-06-27 22:32:07,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 295 flow [2024-06-27 22:32:07,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 274 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:07,878 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 209 flow [2024-06-27 22:32:07,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-06-27 22:32:07,879 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2024-06-27 22:32:07,879 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 209 flow [2024-06-27 22:32:07,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:07,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:07,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:07,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:32:07,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:07,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:07,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1438051434, now seen corresponding path program 1 times [2024-06-27 22:32:07,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:07,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145955865] [2024-06-27 22:32:07,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:07,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:08,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:08,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145955865] [2024-06-27 22:32:08,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145955865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:08,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:08,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:08,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006006061] [2024-06-27 22:32:08,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:08,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:08,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:08,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:08,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:09,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-27 22:32:09,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:09,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:09,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-27 22:32:09,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:09,295 INFO L124 PetriNetUnfolderBase]: 373/770 cut-off events. [2024-06-27 22:32:09,295 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2024-06-27 22:32:09,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 770 events. 373/770 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4207 event pairs, 121 based on Foata normal form. 4/746 useless extension candidates. Maximal degree in co-relation 1891. Up to 551 conditions per place. [2024-06-27 22:32:09,300 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 47 selfloop transitions, 11 changer transitions 5/75 dead transitions. [2024-06-27 22:32:09,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 391 flow [2024-06-27 22:32:09,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:09,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 22:32:09,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-06-27 22:32:09,303 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 209 flow. Second operand 6 states and 144 transitions. [2024-06-27 22:32:09,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 391 flow [2024-06-27 22:32:09,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 75 transitions, 389 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 22:32:09,308 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 215 flow [2024-06-27 22:32:09,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-06-27 22:32:09,312 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2024-06-27 22:32:09,312 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 215 flow [2024-06-27 22:32:09,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:09,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:09,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:09,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:32:09,316 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:09,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:09,316 INFO L85 PathProgramCache]: Analyzing trace with hash -2070544328, now seen corresponding path program 1 times [2024-06-27 22:32:09,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:09,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799808842] [2024-06-27 22:32:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:09,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:10,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:10,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799808842] [2024-06-27 22:32:10,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799808842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:10,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:10,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:10,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508631187] [2024-06-27 22:32:10,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:10,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:10,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:10,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:10,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:10,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:10,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 215 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:10,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:10,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:10,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:10,554 INFO L124 PetriNetUnfolderBase]: 429/855 cut-off events. [2024-06-27 22:32:10,555 INFO L125 PetriNetUnfolderBase]: For 1127/1127 co-relation queries the response was YES. [2024-06-27 22:32:10,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 855 events. 429/855 cut-off events. For 1127/1127 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4737 event pairs, 246 based on Foata normal form. 1/824 useless extension candidates. Maximal degree in co-relation 2215. Up to 697 conditions per place. [2024-06-27 22:32:10,559 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 38 selfloop transitions, 13 changer transitions 0/60 dead transitions. [2024-06-27 22:32:10,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 353 flow [2024-06-27 22:32:10,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:10,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:10,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-27 22:32:10,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 22:32:10,560 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 215 flow. Second operand 6 states and 112 transitions. [2024-06-27 22:32:10,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 353 flow [2024-06-27 22:32:10,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 327 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:10,563 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 239 flow [2024-06-27 22:32:10,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-06-27 22:32:10,565 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-06-27 22:32:10,565 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 239 flow [2024-06-27 22:32:10,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:10,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:10,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:10,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:32:10,566 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:10,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:10,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2017707341, now seen corresponding path program 1 times [2024-06-27 22:32:10,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:10,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608546952] [2024-06-27 22:32:10,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:10,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:11,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:11,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:11,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608546952] [2024-06-27 22:32:11,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608546952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:11,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:11,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:11,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734371112] [2024-06-27 22:32:11,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:11,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:11,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:11,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:11,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:11,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:32:11,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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 22:32:11,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:11,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:32:11,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:11,760 INFO L124 PetriNetUnfolderBase]: 416/869 cut-off events. [2024-06-27 22:32:11,760 INFO L125 PetriNetUnfolderBase]: For 1257/1257 co-relation queries the response was YES. [2024-06-27 22:32:11,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2336 conditions, 869 events. 416/869 cut-off events. For 1257/1257 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4739 event pairs, 156 based on Foata normal form. 1/833 useless extension candidates. Maximal degree in co-relation 2310. Up to 656 conditions per place. [2024-06-27 22:32:11,765 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 48 selfloop transitions, 17 changer transitions 0/76 dead transitions. [2024-06-27 22:32:11,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 76 transitions, 459 flow [2024-06-27 22:32:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:11,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-27 22:32:11,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518796992481203 [2024-06-27 22:32:11,767 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 239 flow. Second operand 7 states and 138 transitions. [2024-06-27 22:32:11,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 76 transitions, 459 flow [2024-06-27 22:32:11,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 431 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:11,770 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 324 flow [2024-06-27 22:32:11,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2024-06-27 22:32:11,771 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-27 22:32:11,771 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 324 flow [2024-06-27 22:32:11,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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 22:32:11,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:11,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:11,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:32:11,772 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:11,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:11,773 INFO L85 PathProgramCache]: Analyzing trace with hash 116307127, now seen corresponding path program 2 times [2024-06-27 22:32:11,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:11,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229222604] [2024-06-27 22:32:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:11,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:12,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:12,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:12,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229222604] [2024-06-27 22:32:12,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229222604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:12,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:12,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:12,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520150881] [2024-06-27 22:32:12,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:12,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:12,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:12,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:12,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:12,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:32:12,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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 22:32:12,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:12,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:32:12,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:12,905 INFO L124 PetriNetUnfolderBase]: 430/920 cut-off events. [2024-06-27 22:32:12,905 INFO L125 PetriNetUnfolderBase]: For 1842/1842 co-relation queries the response was YES. [2024-06-27 22:32:12,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2675 conditions, 920 events. 430/920 cut-off events. For 1842/1842 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5220 event pairs, 133 based on Foata normal form. 1/878 useless extension candidates. Maximal degree in co-relation 2647. Up to 672 conditions per place. [2024-06-27 22:32:12,911 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 47 selfloop transitions, 23 changer transitions 0/81 dead transitions. [2024-06-27 22:32:12,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 569 flow [2024-06-27 22:32:12,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:12,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:12,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-27 22:32:12,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 22:32:12,914 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 324 flow. Second operand 6 states and 120 transitions. [2024-06-27 22:32:12,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 569 flow [2024-06-27 22:32:12,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 81 transitions, 537 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:12,919 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 435 flow [2024-06-27 22:32:12,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=435, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2024-06-27 22:32:12,921 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-27 22:32:12,921 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 435 flow [2024-06-27 22:32:12,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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 22:32:12,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:12,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:12,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:32:12,922 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:12,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:12,922 INFO L85 PathProgramCache]: Analyzing trace with hash -787481869, now seen corresponding path program 3 times [2024-06-27 22:32:12,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:12,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432541752] [2024-06-27 22:32:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:12,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:13,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:13,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:13,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432541752] [2024-06-27 22:32:13,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432541752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:13,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:13,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:32:13,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368502577] [2024-06-27 22:32:13,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:13,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:32:13,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:13,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:32:13,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:32:13,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:32:13,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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 22:32:13,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:13,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:32:13,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:14,094 INFO L124 PetriNetUnfolderBase]: 426/914 cut-off events. [2024-06-27 22:32:14,095 INFO L125 PetriNetUnfolderBase]: For 2459/2459 co-relation queries the response was YES. [2024-06-27 22:32:14,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2849 conditions, 914 events. 426/914 cut-off events. For 2459/2459 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5189 event pairs, 135 based on Foata normal form. 1/872 useless extension candidates. Maximal degree in co-relation 2818. Up to 646 conditions per place. [2024-06-27 22:32:14,100 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 42 selfloop transitions, 31 changer transitions 0/84 dead transitions. [2024-06-27 22:32:14,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 84 transitions, 637 flow [2024-06-27 22:32:14,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:32:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:32:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-27 22:32:14,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 22:32:14,101 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 435 flow. Second operand 6 states and 120 transitions. [2024-06-27 22:32:14,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 84 transitions, 637 flow [2024-06-27 22:32:14,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 84 transitions, 612 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 22:32:14,105 INFO L231 Difference]: Finished difference. Result has 72 places, 73 transitions, 510 flow [2024-06-27 22:32:14,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=510, PETRI_PLACES=72, PETRI_TRANSITIONS=73} [2024-06-27 22:32:14,106 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-06-27 22:32:14,106 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 73 transitions, 510 flow [2024-06-27 22:32:14,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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 22:32:14,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:14,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:14,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:32:14,110 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:14,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:14,110 INFO L85 PathProgramCache]: Analyzing trace with hash 237636361, now seen corresponding path program 1 times [2024-06-27 22:32:14,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:14,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030498101] [2024-06-27 22:32:14,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:14,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:15,203 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 22:32:15,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:15,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030498101] [2024-06-27 22:32:15,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030498101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:15,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:15,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:15,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316177046] [2024-06-27 22:32:15,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:15,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:15,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:15,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:15,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:15,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:32:15,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 73 transitions, 510 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:32:15,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:15,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:32:15,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:15,528 INFO L124 PetriNetUnfolderBase]: 400/854 cut-off events. [2024-06-27 22:32:15,528 INFO L125 PetriNetUnfolderBase]: For 2752/2752 co-relation queries the response was YES. [2024-06-27 22:32:15,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2813 conditions, 854 events. 400/854 cut-off events. For 2752/2752 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4735 event pairs, 200 based on Foata normal form. 1/819 useless extension candidates. Maximal degree in co-relation 2779. Up to 641 conditions per place. [2024-06-27 22:32:15,534 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 64 selfloop transitions, 16 changer transitions 0/90 dead transitions. [2024-06-27 22:32:15,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 730 flow [2024-06-27 22:32:15,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-27 22:32:15,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075187969924813 [2024-06-27 22:32:15,535 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 510 flow. Second operand 7 states and 135 transitions. [2024-06-27 22:32:15,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 730 flow [2024-06-27 22:32:15,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 90 transitions, 652 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:15,542 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 498 flow [2024-06-27 22:32:15,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=498, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-06-27 22:32:15,543 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2024-06-27 22:32:15,543 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 498 flow [2024-06-27 22:32:15,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:32:15,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:15,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:15,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:32:15,545 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:15,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:15,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1892031895, now seen corresponding path program 1 times [2024-06-27 22:32:15,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:15,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630649423] [2024-06-27 22:32:15,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:15,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:16,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:16,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630649423] [2024-06-27 22:32:16,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630649423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:16,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:16,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:16,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659323970] [2024-06-27 22:32:16,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:16,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:16,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:16,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:16,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:16,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:16,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 498 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:16,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:16,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:16,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:16,761 INFO L124 PetriNetUnfolderBase]: 464/955 cut-off events. [2024-06-27 22:32:16,761 INFO L125 PetriNetUnfolderBase]: For 3459/3459 co-relation queries the response was YES. [2024-06-27 22:32:16,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3245 conditions, 955 events. 464/955 cut-off events. For 3459/3459 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5273 event pairs, 160 based on Foata normal form. 1/915 useless extension candidates. Maximal degree in co-relation 3210. Up to 727 conditions per place. [2024-06-27 22:32:16,766 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 62 selfloop transitions, 27 changer transitions 0/98 dead transitions. [2024-06-27 22:32:16,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 98 transitions, 756 flow [2024-06-27 22:32:16,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:16,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:32:16,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901315789473684 [2024-06-27 22:32:16,767 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 498 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:32:16,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 98 transitions, 756 flow [2024-06-27 22:32:16,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 98 transitions, 712 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:16,772 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 549 flow [2024-06-27 22:32:16,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=549, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2024-06-27 22:32:16,772 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2024-06-27 22:32:16,772 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 549 flow [2024-06-27 22:32:16,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:16,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:16,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:16,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:32:16,773 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:16,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:16,773 INFO L85 PathProgramCache]: Analyzing trace with hash -508588211, now seen corresponding path program 2 times [2024-06-27 22:32:16,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:16,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196207939] [2024-06-27 22:32:16,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:16,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:17,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:17,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:17,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196207939] [2024-06-27 22:32:17,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196207939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:17,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:17,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:17,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274829325] [2024-06-27 22:32:17,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:17,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:17,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:17,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:17,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:17,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:17,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 549 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:17,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:17,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:17,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:18,053 INFO L124 PetriNetUnfolderBase]: 504/1023 cut-off events. [2024-06-27 22:32:18,054 INFO L125 PetriNetUnfolderBase]: For 4486/4486 co-relation queries the response was YES. [2024-06-27 22:32:18,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3663 conditions, 1023 events. 504/1023 cut-off events. For 4486/4486 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5726 event pairs, 172 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 3627. Up to 747 conditions per place. [2024-06-27 22:32:18,059 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 67 selfloop transitions, 37 changer transitions 0/113 dead transitions. [2024-06-27 22:32:18,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 113 transitions, 992 flow [2024-06-27 22:32:18,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:18,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-27 22:32:18,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518796992481203 [2024-06-27 22:32:18,061 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 549 flow. Second operand 7 states and 138 transitions. [2024-06-27 22:32:18,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 113 transitions, 992 flow [2024-06-27 22:32:18,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 113 transitions, 896 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 22:32:18,072 INFO L231 Difference]: Finished difference. Result has 81 places, 97 transitions, 747 flow [2024-06-27 22:32:18,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=747, PETRI_PLACES=81, PETRI_TRANSITIONS=97} [2024-06-27 22:32:18,073 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2024-06-27 22:32:18,073 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 97 transitions, 747 flow [2024-06-27 22:32:18,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:18,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:18,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:18,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:32:18,074 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:18,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:18,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1358163565, now seen corresponding path program 3 times [2024-06-27 22:32:18,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:18,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828267612] [2024-06-27 22:32:18,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:18,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:19,037 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 22:32:19,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:19,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828267612] [2024-06-27 22:32:19,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828267612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:19,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:19,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:19,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554988510] [2024-06-27 22:32:19,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:19,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:19,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:19,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:19,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:19,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:19,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 97 transitions, 747 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:19,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:19,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:19,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:19,376 INFO L124 PetriNetUnfolderBase]: 512/1036 cut-off events. [2024-06-27 22:32:19,377 INFO L125 PetriNetUnfolderBase]: For 5691/5691 co-relation queries the response was YES. [2024-06-27 22:32:19,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4010 conditions, 1036 events. 512/1036 cut-off events. For 5691/5691 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5805 event pairs, 170 based on Foata normal form. 1/994 useless extension candidates. Maximal degree in co-relation 3971. Up to 749 conditions per place. [2024-06-27 22:32:19,384 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 63 selfloop transitions, 48 changer transitions 0/120 dead transitions. [2024-06-27 22:32:19,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 120 transitions, 1141 flow [2024-06-27 22:32:19,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:19,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 22:32:19,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037593984962406 [2024-06-27 22:32:19,386 INFO L175 Difference]: Start difference. First operand has 81 places, 97 transitions, 747 flow. Second operand 7 states and 134 transitions. [2024-06-27 22:32:19,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 120 transitions, 1141 flow [2024-06-27 22:32:19,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 120 transitions, 1079 flow, removed 31 selfloop flow, removed 0 redundant places. [2024-06-27 22:32:19,394 INFO L231 Difference]: Finished difference. Result has 89 places, 105 transitions, 925 flow [2024-06-27 22:32:19,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=925, PETRI_PLACES=89, PETRI_TRANSITIONS=105} [2024-06-27 22:32:19,395 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2024-06-27 22:32:19,395 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 105 transitions, 925 flow [2024-06-27 22:32:19,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:19,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:19,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:19,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:32:19,396 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:19,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:19,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1357866895, now seen corresponding path program 4 times [2024-06-27 22:32:19,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:19,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886556231] [2024-06-27 22:32:19,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:19,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:20,365 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 22:32:20,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:20,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886556231] [2024-06-27 22:32:20,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886556231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:20,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:20,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:20,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817639712] [2024-06-27 22:32:20,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:20,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:20,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:20,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:20,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:20,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:20,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 105 transitions, 925 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:20,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:20,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:20,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:20,775 INFO L124 PetriNetUnfolderBase]: 510/1033 cut-off events. [2024-06-27 22:32:20,775 INFO L125 PetriNetUnfolderBase]: For 6605/6605 co-relation queries the response was YES. [2024-06-27 22:32:20,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4235 conditions, 1033 events. 510/1033 cut-off events. For 6605/6605 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5795 event pairs, 170 based on Foata normal form. 1/991 useless extension candidates. Maximal degree in co-relation 4191. Up to 747 conditions per place. [2024-06-27 22:32:20,781 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 65 selfloop transitions, 45 changer transitions 0/119 dead transitions. [2024-06-27 22:32:20,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 119 transitions, 1183 flow [2024-06-27 22:32:20,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:20,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 22:32:20,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037593984962406 [2024-06-27 22:32:20,784 INFO L175 Difference]: Start difference. First operand has 89 places, 105 transitions, 925 flow. Second operand 7 states and 134 transitions. [2024-06-27 22:32:20,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 119 transitions, 1183 flow [2024-06-27 22:32:20,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 119 transitions, 1094 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:20,798 INFO L231 Difference]: Finished difference. Result has 93 places, 105 transitions, 932 flow [2024-06-27 22:32:20,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=932, PETRI_PLACES=93, PETRI_TRANSITIONS=105} [2024-06-27 22:32:20,799 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 51 predicate places. [2024-06-27 22:32:20,799 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 105 transitions, 932 flow [2024-06-27 22:32:20,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:20,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:20,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:20,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:32:20,800 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:20,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1963060940, now seen corresponding path program 1 times [2024-06-27 22:32:20,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:20,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72130019] [2024-06-27 22:32:20,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:20,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:21,852 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 22:32:21,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:21,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72130019] [2024-06-27 22:32:21,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72130019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:21,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:21,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:21,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696721571] [2024-06-27 22:32:21,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:21,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:21,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:21,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:21,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:21,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:32:21,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 105 transitions, 932 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:32:21,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:21,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:32:21,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:22,327 INFO L124 PetriNetUnfolderBase]: 527/1067 cut-off events. [2024-06-27 22:32:22,327 INFO L125 PetriNetUnfolderBase]: For 7282/7305 co-relation queries the response was YES. [2024-06-27 22:32:22,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4469 conditions, 1067 events. 527/1067 cut-off events. For 7282/7305 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5982 event pairs, 153 based on Foata normal form. 1/1022 useless extension candidates. Maximal degree in co-relation 4423. Up to 749 conditions per place. [2024-06-27 22:32:22,333 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 93 selfloop transitions, 42 changer transitions 0/152 dead transitions. [2024-06-27 22:32:22,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 152 transitions, 1458 flow [2024-06-27 22:32:22,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:22,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-27 22:32:22,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-06-27 22:32:22,335 INFO L175 Difference]: Start difference. First operand has 93 places, 105 transitions, 932 flow. Second operand 8 states and 164 transitions. [2024-06-27 22:32:22,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 152 transitions, 1458 flow [2024-06-27 22:32:22,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 152 transitions, 1380 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:22,343 INFO L231 Difference]: Finished difference. Result has 99 places, 124 transitions, 1161 flow [2024-06-27 22:32:22,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1161, PETRI_PLACES=99, PETRI_TRANSITIONS=124} [2024-06-27 22:32:22,344 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2024-06-27 22:32:22,344 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 124 transitions, 1161 flow [2024-06-27 22:32:22,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:32:22,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:22,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:22,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:32:22,344 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:22,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash 389667678, now seen corresponding path program 2 times [2024-06-27 22:32:22,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:22,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319057917] [2024-06-27 22:32:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:22,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:23,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:23,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319057917] [2024-06-27 22:32:23,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319057917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:23,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:23,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:23,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834222174] [2024-06-27 22:32:23,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:23,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:23,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:23,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:23,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:23,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:32:23,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 124 transitions, 1161 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:32:23,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:23,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:32:23,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:23,891 INFO L124 PetriNetUnfolderBase]: 547/1114 cut-off events. [2024-06-27 22:32:23,891 INFO L125 PetriNetUnfolderBase]: For 8563/8570 co-relation queries the response was YES. [2024-06-27 22:32:23,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 1114 events. 547/1114 cut-off events. For 8563/8570 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6366 event pairs, 137 based on Foata normal form. 1/1074 useless extension candidates. Maximal degree in co-relation 4921. Up to 773 conditions per place. [2024-06-27 22:32:23,903 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 88 selfloop transitions, 51 changer transitions 0/156 dead transitions. [2024-06-27 22:32:23,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 156 transitions, 1695 flow [2024-06-27 22:32:23,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:23,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-27 22:32:23,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 22:32:23,907 INFO L175 Difference]: Start difference. First operand has 99 places, 124 transitions, 1161 flow. Second operand 8 states and 160 transitions. [2024-06-27 22:32:23,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 156 transitions, 1695 flow [2024-06-27 22:32:23,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 156 transitions, 1594 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:23,924 INFO L231 Difference]: Finished difference. Result has 104 places, 136 transitions, 1373 flow [2024-06-27 22:32:23,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1373, PETRI_PLACES=104, PETRI_TRANSITIONS=136} [2024-06-27 22:32:23,925 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2024-06-27 22:32:23,925 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 136 transitions, 1373 flow [2024-06-27 22:32:23,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:32:23,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:23,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:23,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:32:23,926 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:23,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:23,926 INFO L85 PathProgramCache]: Analyzing trace with hash 861319600, now seen corresponding path program 3 times [2024-06-27 22:32:23,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:23,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593086016] [2024-06-27 22:32:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:23,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:24,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:24,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593086016] [2024-06-27 22:32:24,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593086016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:24,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:24,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:24,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622491726] [2024-06-27 22:32:24,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:24,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:24,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:24,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:24,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:24,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:32:24,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 136 transitions, 1373 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:32:24,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:24,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:32:24,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:25,210 INFO L124 PetriNetUnfolderBase]: 560/1161 cut-off events. [2024-06-27 22:32:25,211 INFO L125 PetriNetUnfolderBase]: For 9781/9781 co-relation queries the response was YES. [2024-06-27 22:32:25,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5267 conditions, 1161 events. 560/1161 cut-off events. For 9781/9781 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6776 event pairs, 111 based on Foata normal form. 1/1116 useless extension candidates. Maximal degree in co-relation 5217. Up to 789 conditions per place. [2024-06-27 22:32:25,218 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 104 selfloop transitions, 55 changer transitions 0/176 dead transitions. [2024-06-27 22:32:25,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 176 transitions, 1903 flow [2024-06-27 22:32:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:25,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:25,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-27 22:32:25,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-06-27 22:32:25,219 INFO L175 Difference]: Start difference. First operand has 104 places, 136 transitions, 1373 flow. Second operand 8 states and 164 transitions. [2024-06-27 22:32:25,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 176 transitions, 1903 flow [2024-06-27 22:32:25,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 176 transitions, 1818 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-06-27 22:32:25,236 INFO L231 Difference]: Finished difference. Result has 111 places, 148 transitions, 1574 flow [2024-06-27 22:32:25,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1292, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1574, PETRI_PLACES=111, PETRI_TRANSITIONS=148} [2024-06-27 22:32:25,237 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2024-06-27 22:32:25,237 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 148 transitions, 1574 flow [2024-06-27 22:32:25,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:32:25,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:25,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:25,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:32:25,238 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:25,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:25,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1248533198, now seen corresponding path program 1 times [2024-06-27 22:32:25,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:25,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253003511] [2024-06-27 22:32:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:25,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:26,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:26,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253003511] [2024-06-27 22:32:26,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253003511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:26,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:26,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:26,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384017653] [2024-06-27 22:32:26,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:26,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:26,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:26,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:26,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:26,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:26,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 148 transitions, 1574 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 22:32:26,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:26,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:26,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:26,606 INFO L124 PetriNetUnfolderBase]: 596/1196 cut-off events. [2024-06-27 22:32:26,606 INFO L125 PetriNetUnfolderBase]: For 11103/11103 co-relation queries the response was YES. [2024-06-27 22:32:26,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5764 conditions, 1196 events. 596/1196 cut-off events. For 11103/11103 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6872 event pairs, 150 based on Foata normal form. 1/1152 useless extension candidates. Maximal degree in co-relation 5711. Up to 920 conditions per place. [2024-06-27 22:32:26,614 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 131 selfloop transitions, 33 changer transitions 0/173 dead transitions. [2024-06-27 22:32:26,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 173 transitions, 2024 flow [2024-06-27 22:32:26,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:32:26,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-27 22:32:26,616 INFO L175 Difference]: Start difference. First operand has 111 places, 148 transitions, 1574 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:32:26,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 173 transitions, 2024 flow [2024-06-27 22:32:26,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 173 transitions, 1904 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:26,632 INFO L231 Difference]: Finished difference. Result has 115 places, 151 transitions, 1575 flow [2024-06-27 22:32:26,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1575, PETRI_PLACES=115, PETRI_TRANSITIONS=151} [2024-06-27 22:32:26,632 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2024-06-27 22:32:26,632 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 151 transitions, 1575 flow [2024-06-27 22:32:26,632 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 22:32:26,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:26,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:26,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:32:26,633 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:26,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:26,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1294481170, now seen corresponding path program 4 times [2024-06-27 22:32:26,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:26,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997901584] [2024-06-27 22:32:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:26,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:27,592 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 22:32:27,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:27,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997901584] [2024-06-27 22:32:27,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997901584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:27,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:27,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:27,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626070722] [2024-06-27 22:32:27,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:27,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:27,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:27,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:27,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:27,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:32:27,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 151 transitions, 1575 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:32:27,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:27,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:32:27,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:28,059 INFO L124 PetriNetUnfolderBase]: 580/1186 cut-off events. [2024-06-27 22:32:28,060 INFO L125 PetriNetUnfolderBase]: For 11722/11722 co-relation queries the response was YES. [2024-06-27 22:32:28,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5786 conditions, 1186 events. 580/1186 cut-off events. For 11722/11722 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6943 event pairs, 111 based on Foata normal form. 1/1138 useless extension candidates. Maximal degree in co-relation 5732. Up to 816 conditions per place. [2024-06-27 22:32:28,068 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 105 selfloop transitions, 59 changer transitions 0/181 dead transitions. [2024-06-27 22:32:28,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 181 transitions, 2087 flow [2024-06-27 22:32:28,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:28,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-27 22:32:28,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164473684210527 [2024-06-27 22:32:28,069 INFO L175 Difference]: Start difference. First operand has 115 places, 151 transitions, 1575 flow. Second operand 8 states and 157 transitions. [2024-06-27 22:32:28,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 181 transitions, 2087 flow [2024-06-27 22:32:28,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 181 transitions, 1976 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 22:32:28,088 INFO L231 Difference]: Finished difference. Result has 117 places, 163 transitions, 1759 flow [2024-06-27 22:32:28,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1759, PETRI_PLACES=117, PETRI_TRANSITIONS=163} [2024-06-27 22:32:28,089 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 75 predicate places. [2024-06-27 22:32:28,089 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 163 transitions, 1759 flow [2024-06-27 22:32:28,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:32:28,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:28,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:28,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:32:28,090 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:28,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:28,090 INFO L85 PathProgramCache]: Analyzing trace with hash 102025302, now seen corresponding path program 5 times [2024-06-27 22:32:28,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:28,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219282988] [2024-06-27 22:32:28,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:28,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:29,097 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 22:32:29,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:29,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219282988] [2024-06-27 22:32:29,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219282988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:29,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:29,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:29,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630959379] [2024-06-27 22:32:29,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:29,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:29,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:29,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:29,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:29,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:32:29,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 163 transitions, 1759 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:32:29,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:29,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:32:29,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:29,574 INFO L124 PetriNetUnfolderBase]: 592/1210 cut-off events. [2024-06-27 22:32:29,574 INFO L125 PetriNetUnfolderBase]: For 13211/13211 co-relation queries the response was YES. [2024-06-27 22:32:29,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6088 conditions, 1210 events. 592/1210 cut-off events. For 13211/13211 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7145 event pairs, 118 based on Foata normal form. 1/1162 useless extension candidates. Maximal degree in co-relation 6032. Up to 851 conditions per place. [2024-06-27 22:32:29,582 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 115 selfloop transitions, 51 changer transitions 0/183 dead transitions. [2024-06-27 22:32:29,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 183 transitions, 2216 flow [2024-06-27 22:32:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-27 22:32:29,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338345864661654 [2024-06-27 22:32:29,587 INFO L175 Difference]: Start difference. First operand has 117 places, 163 transitions, 1759 flow. Second operand 7 states and 142 transitions. [2024-06-27 22:32:29,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 183 transitions, 2216 flow [2024-06-27 22:32:29,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 183 transitions, 2148 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:29,603 INFO L231 Difference]: Finished difference. Result has 121 places, 169 transitions, 1890 flow [2024-06-27 22:32:29,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1890, PETRI_PLACES=121, PETRI_TRANSITIONS=169} [2024-06-27 22:32:29,604 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2024-06-27 22:32:29,604 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 169 transitions, 1890 flow [2024-06-27 22:32:29,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:32:29,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:29,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:29,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:32:29,604 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:29,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:29,605 INFO L85 PathProgramCache]: Analyzing trace with hash -855806062, now seen corresponding path program 6 times [2024-06-27 22:32:29,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:29,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113293518] [2024-06-27 22:32:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:29,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:30,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:30,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113293518] [2024-06-27 22:32:30,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113293518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:30,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:30,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:32:30,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896965643] [2024-06-27 22:32:30,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:30,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:32:30,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:30,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:32:30,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:32:30,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:32:30,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 169 transitions, 1890 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:32:30,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:30,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:32:30,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:31,342 INFO L124 PetriNetUnfolderBase]: 589/1204 cut-off events. [2024-06-27 22:32:31,342 INFO L125 PetriNetUnfolderBase]: For 14805/14805 co-relation queries the response was YES. [2024-06-27 22:32:31,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6191 conditions, 1204 events. 589/1204 cut-off events. For 14805/14805 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7116 event pairs, 123 based on Foata normal form. 1/1155 useless extension candidates. Maximal degree in co-relation 6134. Up to 795 conditions per place. [2024-06-27 22:32:31,351 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 98 selfloop transitions, 71 changer transitions 0/186 dead transitions. [2024-06-27 22:32:31,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 186 transitions, 2348 flow [2024-06-27 22:32:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:32:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:32:31,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-27 22:32:31,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300751879699248 [2024-06-27 22:32:31,352 INFO L175 Difference]: Start difference. First operand has 121 places, 169 transitions, 1890 flow. Second operand 7 states and 141 transitions. [2024-06-27 22:32:31,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 186 transitions, 2348 flow [2024-06-27 22:32:31,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 186 transitions, 2206 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:31,372 INFO L231 Difference]: Finished difference. Result has 123 places, 172 transitions, 1968 flow [2024-06-27 22:32:31,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1968, PETRI_PLACES=123, PETRI_TRANSITIONS=172} [2024-06-27 22:32:31,373 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 81 predicate places. [2024-06-27 22:32:31,373 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 172 transitions, 1968 flow [2024-06-27 22:32:31,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:32:31,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:31,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:31,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:32:31,374 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:31,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2026024910, now seen corresponding path program 2 times [2024-06-27 22:32:31,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:31,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468351174] [2024-06-27 22:32:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:32,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:32,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468351174] [2024-06-27 22:32:32,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468351174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:32,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:32,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:32,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719490898] [2024-06-27 22:32:32,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:32,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:32,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:32,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:32,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:32,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:32,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 172 transitions, 1968 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 22:32:32,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:32,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:32,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:32,840 INFO L124 PetriNetUnfolderBase]: 641/1268 cut-off events. [2024-06-27 22:32:32,841 INFO L125 PetriNetUnfolderBase]: For 16811/16811 co-relation queries the response was YES. [2024-06-27 22:32:32,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6668 conditions, 1268 events. 641/1268 cut-off events. For 16811/16811 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7355 event pairs, 153 based on Foata normal form. 2/1221 useless extension candidates. Maximal degree in co-relation 6610. Up to 927 conditions per place. [2024-06-27 22:32:32,848 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 126 selfloop transitions, 61 changer transitions 0/196 dead transitions. [2024-06-27 22:32:32,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 196 transitions, 2486 flow [2024-06-27 22:32:32,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:32,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:32,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:32:32,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098684210526315 [2024-06-27 22:32:32,850 INFO L175 Difference]: Start difference. First operand has 123 places, 172 transitions, 1968 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:32:32,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 196 transitions, 2486 flow [2024-06-27 22:32:32,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 196 transitions, 2288 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:32,871 INFO L231 Difference]: Finished difference. Result has 126 places, 179 transitions, 2000 flow [2024-06-27 22:32:32,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2000, PETRI_PLACES=126, PETRI_TRANSITIONS=179} [2024-06-27 22:32:32,872 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2024-06-27 22:32:32,872 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 179 transitions, 2000 flow [2024-06-27 22:32:32,872 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 22:32:32,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:32,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:32,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:32:32,872 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:32,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:32,873 INFO L85 PathProgramCache]: Analyzing trace with hash 725777000, now seen corresponding path program 3 times [2024-06-27 22:32:32,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:32,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843993678] [2024-06-27 22:32:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:32,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:33,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:33,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:33,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843993678] [2024-06-27 22:32:33,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843993678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:33,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:33,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:33,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348874394] [2024-06-27 22:32:33,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:33,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:33,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:33,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:33,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:33,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:33,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 179 transitions, 2000 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 22:32:33,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:33,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:33,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:34,257 INFO L124 PetriNetUnfolderBase]: 649/1301 cut-off events. [2024-06-27 22:32:34,257 INFO L125 PetriNetUnfolderBase]: For 17738/17738 co-relation queries the response was YES. [2024-06-27 22:32:34,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6885 conditions, 1301 events. 649/1301 cut-off events. For 17738/17738 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7699 event pairs, 128 based on Foata normal form. 1/1252 useless extension candidates. Maximal degree in co-relation 6826. Up to 919 conditions per place. [2024-06-27 22:32:34,267 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 141 selfloop transitions, 58 changer transitions 0/208 dead transitions. [2024-06-27 22:32:34,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 208 transitions, 2680 flow [2024-06-27 22:32:34,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:34,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 22:32:34,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-06-27 22:32:34,268 INFO L175 Difference]: Start difference. First operand has 126 places, 179 transitions, 2000 flow. Second operand 8 states and 154 transitions. [2024-06-27 22:32:34,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 208 transitions, 2680 flow [2024-06-27 22:32:34,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 208 transitions, 2484 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 22:32:34,293 INFO L231 Difference]: Finished difference. Result has 129 places, 190 transitions, 2142 flow [2024-06-27 22:32:34,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2142, PETRI_PLACES=129, PETRI_TRANSITIONS=190} [2024-06-27 22:32:34,294 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 87 predicate places. [2024-06-27 22:32:34,294 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 190 transitions, 2142 flow [2024-06-27 22:32:34,294 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 22:32:34,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:34,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:34,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:32:34,294 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:34,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:34,295 INFO L85 PathProgramCache]: Analyzing trace with hash -846274926, now seen corresponding path program 4 times [2024-06-27 22:32:34,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:34,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562067808] [2024-06-27 22:32:34,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:34,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:35,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:35,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562067808] [2024-06-27 22:32:35,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562067808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:35,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:35,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:35,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776104295] [2024-06-27 22:32:35,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:35,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:35,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:35,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:35,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:35,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:35,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 190 transitions, 2142 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 22:32:35,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:35,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:35,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:35,748 INFO L124 PetriNetUnfolderBase]: 677/1348 cut-off events. [2024-06-27 22:32:35,749 INFO L125 PetriNetUnfolderBase]: For 20013/20013 co-relation queries the response was YES. [2024-06-27 22:32:35,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7376 conditions, 1348 events. 677/1348 cut-off events. For 20013/20013 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8004 event pairs, 122 based on Foata normal form. 1/1296 useless extension candidates. Maximal degree in co-relation 7315. Up to 856 conditions per place. [2024-06-27 22:32:35,760 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 98 selfloop transitions, 111 changer transitions 0/218 dead transitions. [2024-06-27 22:32:35,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 218 transitions, 2912 flow [2024-06-27 22:32:35,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:35,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 22:32:35,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2024-06-27 22:32:35,777 INFO L175 Difference]: Start difference. First operand has 129 places, 190 transitions, 2142 flow. Second operand 8 states and 158 transitions. [2024-06-27 22:32:35,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 218 transitions, 2912 flow [2024-06-27 22:32:35,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 218 transitions, 2821 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:35,805 INFO L231 Difference]: Finished difference. Result has 136 places, 199 transitions, 2543 flow [2024-06-27 22:32:35,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2059, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2543, PETRI_PLACES=136, PETRI_TRANSITIONS=199} [2024-06-27 22:32:35,805 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 94 predicate places. [2024-06-27 22:32:35,805 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 199 transitions, 2543 flow [2024-06-27 22:32:35,805 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 22:32:35,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:35,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:35,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:32:35,806 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:35,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:35,806 INFO L85 PathProgramCache]: Analyzing trace with hash -846601356, now seen corresponding path program 5 times [2024-06-27 22:32:35,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:35,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022392695] [2024-06-27 22:32:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:35,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:36,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:36,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022392695] [2024-06-27 22:32:36,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022392695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:36,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:36,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:36,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405910357] [2024-06-27 22:32:36,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:36,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:36,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:36,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:36,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:36,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:36,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 199 transitions, 2543 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 22:32:36,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:36,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:36,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:37,347 INFO L124 PetriNetUnfolderBase]: 675/1345 cut-off events. [2024-06-27 22:32:37,347 INFO L125 PetriNetUnfolderBase]: For 21221/21221 co-relation queries the response was YES. [2024-06-27 22:32:37,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7854 conditions, 1345 events. 675/1345 cut-off events. For 21221/21221 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7945 event pairs, 126 based on Foata normal form. 1/1293 useless extension candidates. Maximal degree in co-relation 7789. Up to 854 conditions per place. [2024-06-27 22:32:37,357 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 103 selfloop transitions, 105 changer transitions 0/217 dead transitions. [2024-06-27 22:32:37,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 217 transitions, 3075 flow [2024-06-27 22:32:37,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:37,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-27 22:32:37,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164473684210527 [2024-06-27 22:32:37,359 INFO L175 Difference]: Start difference. First operand has 136 places, 199 transitions, 2543 flow. Second operand 8 states and 157 transitions. [2024-06-27 22:32:37,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 217 transitions, 3075 flow [2024-06-27 22:32:37,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 217 transitions, 2894 flow, removed 53 selfloop flow, removed 3 redundant places. [2024-06-27 22:32:37,402 INFO L231 Difference]: Finished difference. Result has 141 places, 199 transitions, 2578 flow [2024-06-27 22:32:37,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2362, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2578, PETRI_PLACES=141, PETRI_TRANSITIONS=199} [2024-06-27 22:32:37,403 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2024-06-27 22:32:37,403 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 199 transitions, 2578 flow [2024-06-27 22:32:37,404 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 22:32:37,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:37,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:37,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:32:37,404 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:37,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:37,405 INFO L85 PathProgramCache]: Analyzing trace with hash -846263022, now seen corresponding path program 1 times [2024-06-27 22:32:37,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:37,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495434887] [2024-06-27 22:32:37,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:37,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:38,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:38,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495434887] [2024-06-27 22:32:38,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495434887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:38,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:38,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:32:38,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497221751] [2024-06-27 22:32:38,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:38,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:32:38,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:38,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:32:38,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:32:39,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:39,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 199 transitions, 2578 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:39,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:39,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:39,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:39,499 INFO L124 PetriNetUnfolderBase]: 673/1345 cut-off events. [2024-06-27 22:32:39,499 INFO L125 PetriNetUnfolderBase]: For 21600/21600 co-relation queries the response was YES. [2024-06-27 22:32:39,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7968 conditions, 1345 events. 673/1345 cut-off events. For 21600/21600 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7968 event pairs, 228 based on Foata normal form. 1/1298 useless extension candidates. Maximal degree in co-relation 7901. Up to 1050 conditions per place. [2024-06-27 22:32:39,509 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 191 selfloop transitions, 22 changer transitions 0/222 dead transitions. [2024-06-27 22:32:39,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 222 transitions, 3130 flow [2024-06-27 22:32:39,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:32:39,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:32:39,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:32:39,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2024-06-27 22:32:39,510 INFO L175 Difference]: Start difference. First operand has 141 places, 199 transitions, 2578 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:32:39,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 222 transitions, 3130 flow [2024-06-27 22:32:39,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 222 transitions, 2952 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 22:32:39,550 INFO L231 Difference]: Finished difference. Result has 145 places, 202 transitions, 2504 flow [2024-06-27 22:32:39,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2504, PETRI_PLACES=145, PETRI_TRANSITIONS=202} [2024-06-27 22:32:39,551 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2024-06-27 22:32:39,551 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 202 transitions, 2504 flow [2024-06-27 22:32:39,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:39,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:39,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:39,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:32:39,552 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:39,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:39,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1765453966, now seen corresponding path program 1 times [2024-06-27 22:32:39,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:39,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041991138] [2024-06-27 22:32:39,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:39,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:40,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:40,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041991138] [2024-06-27 22:32:40,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041991138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:40,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:40,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:40,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944792036] [2024-06-27 22:32:40,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:40,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:40,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:40,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:40,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:41,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:41,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 202 transitions, 2504 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 22:32:41,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:41,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:41,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:41,524 INFO L124 PetriNetUnfolderBase]: 688/1370 cut-off events. [2024-06-27 22:32:41,524 INFO L125 PetriNetUnfolderBase]: For 22405/22405 co-relation queries the response was YES. [2024-06-27 22:32:41,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8088 conditions, 1370 events. 688/1370 cut-off events. For 22405/22405 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8048 event pairs, 138 based on Foata normal form. 1/1321 useless extension candidates. Maximal degree in co-relation 8020. Up to 1000 conditions per place. [2024-06-27 22:32:41,534 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 156 selfloop transitions, 73 changer transitions 0/238 dead transitions. [2024-06-27 22:32:41,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 238 transitions, 3203 flow [2024-06-27 22:32:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:32:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:32:41,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 22:32:41,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-27 22:32:41,555 INFO L175 Difference]: Start difference. First operand has 145 places, 202 transitions, 2504 flow. Second operand 11 states and 200 transitions. [2024-06-27 22:32:41,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 238 transitions, 3203 flow [2024-06-27 22:32:41,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 238 transitions, 3108 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 22:32:41,600 INFO L231 Difference]: Finished difference. Result has 148 places, 212 transitions, 2744 flow [2024-06-27 22:32:41,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2409, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2744, PETRI_PLACES=148, PETRI_TRANSITIONS=212} [2024-06-27 22:32:41,601 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 106 predicate places. [2024-06-27 22:32:41,601 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 212 transitions, 2744 flow [2024-06-27 22:32:41,601 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 22:32:41,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:41,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:41,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:32:41,601 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:41,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:41,602 INFO L85 PathProgramCache]: Analyzing trace with hash 49815666, now seen corresponding path program 2 times [2024-06-27 22:32:41,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:41,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300895131] [2024-06-27 22:32:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:41,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:42,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:42,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300895131] [2024-06-27 22:32:42,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300895131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:42,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:42,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:42,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193530520] [2024-06-27 22:32:42,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:42,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:42,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:42,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:42,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:42,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:42,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 212 transitions, 2744 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 22:32:42,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:42,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:42,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:43,263 INFO L124 PetriNetUnfolderBase]: 710/1401 cut-off events. [2024-06-27 22:32:43,263 INFO L125 PetriNetUnfolderBase]: For 24687/24687 co-relation queries the response was YES. [2024-06-27 22:32:43,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8605 conditions, 1401 events. 710/1401 cut-off events. For 24687/24687 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8258 event pairs, 138 based on Foata normal form. 1/1354 useless extension candidates. Maximal degree in co-relation 8538. Up to 997 conditions per place. [2024-06-27 22:32:43,273 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 152 selfloop transitions, 83 changer transitions 0/244 dead transitions. [2024-06-27 22:32:43,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 244 transitions, 3545 flow [2024-06-27 22:32:43,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:43,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:32:43,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:32:43,275 INFO L175 Difference]: Start difference. First operand has 148 places, 212 transitions, 2744 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:32:43,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 244 transitions, 3545 flow [2024-06-27 22:32:43,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 244 transitions, 3297 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-27 22:32:43,329 INFO L231 Difference]: Finished difference. Result has 150 places, 221 transitions, 2906 flow [2024-06-27 22:32:43,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2906, PETRI_PLACES=150, PETRI_TRANSITIONS=221} [2024-06-27 22:32:43,329 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2024-06-27 22:32:43,329 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 221 transitions, 2906 flow [2024-06-27 22:32:43,330 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 22:32:43,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:43,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:43,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:32:43,330 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:43,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:43,330 INFO L85 PathProgramCache]: Analyzing trace with hash 49578516, now seen corresponding path program 3 times [2024-06-27 22:32:43,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:43,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603119032] [2024-06-27 22:32:43,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:43,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:44,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:44,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:44,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603119032] [2024-06-27 22:32:44,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603119032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:44,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:44,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:44,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857926286] [2024-06-27 22:32:44,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:44,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:44,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:44,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:44,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:44,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:44,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 221 transitions, 2906 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 22:32:44,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:44,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:44,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:45,406 INFO L124 PetriNetUnfolderBase]: 708/1398 cut-off events. [2024-06-27 22:32:45,406 INFO L125 PetriNetUnfolderBase]: For 25659/25659 co-relation queries the response was YES. [2024-06-27 22:32:45,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8692 conditions, 1398 events. 708/1398 cut-off events. For 25659/25659 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8262 event pairs, 147 based on Foata normal form. 1/1350 useless extension candidates. Maximal degree in co-relation 8623. Up to 995 conditions per place. [2024-06-27 22:32:45,416 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 157 selfloop transitions, 78 changer transitions 0/244 dead transitions. [2024-06-27 22:32:45,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 244 transitions, 3514 flow [2024-06-27 22:32:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:45,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 22:32:45,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2024-06-27 22:32:45,418 INFO L175 Difference]: Start difference. First operand has 150 places, 221 transitions, 2906 flow. Second operand 9 states and 172 transitions. [2024-06-27 22:32:45,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 244 transitions, 3514 flow [2024-06-27 22:32:45,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 244 transitions, 3363 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 22:32:45,466 INFO L231 Difference]: Finished difference. Result has 154 places, 221 transitions, 2918 flow [2024-06-27 22:32:45,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2755, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2918, PETRI_PLACES=154, PETRI_TRANSITIONS=221} [2024-06-27 22:32:45,466 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 112 predicate places. [2024-06-27 22:32:45,466 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 221 transitions, 2918 flow [2024-06-27 22:32:45,467 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 22:32:45,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:45,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:45,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:32:45,467 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:45,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:45,467 INFO L85 PathProgramCache]: Analyzing trace with hash 931104882, now seen corresponding path program 4 times [2024-06-27 22:32:45,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:45,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985494430] [2024-06-27 22:32:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:45,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:46,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:46,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:46,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985494430] [2024-06-27 22:32:46,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985494430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:46,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:46,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:46,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969987207] [2024-06-27 22:32:46,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:46,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:46,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:46,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:46,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:46,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:46,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 221 transitions, 2918 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 22:32:46,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:46,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:46,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:47,008 INFO L124 PetriNetUnfolderBase]: 716/1421 cut-off events. [2024-06-27 22:32:47,009 INFO L125 PetriNetUnfolderBase]: For 25631/25631 co-relation queries the response was YES. [2024-06-27 22:32:47,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8854 conditions, 1421 events. 716/1421 cut-off events. For 25631/25631 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8418 event pairs, 106 based on Foata normal form. 1/1371 useless extension candidates. Maximal degree in co-relation 8783. Up to 1031 conditions per place. [2024-06-27 22:32:47,019 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 174 selfloop transitions, 76 changer transitions 0/259 dead transitions. [2024-06-27 22:32:47,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 259 transitions, 3630 flow [2024-06-27 22:32:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:32:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:32:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 22:32:47,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116959064327485 [2024-06-27 22:32:47,021 INFO L175 Difference]: Start difference. First operand has 154 places, 221 transitions, 2918 flow. Second operand 9 states and 175 transitions. [2024-06-27 22:32:47,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 259 transitions, 3630 flow [2024-06-27 22:32:47,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 259 transitions, 3417 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-27 22:32:47,075 INFO L231 Difference]: Finished difference. Result has 157 places, 228 transitions, 2997 flow [2024-06-27 22:32:47,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2710, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2997, PETRI_PLACES=157, PETRI_TRANSITIONS=228} [2024-06-27 22:32:47,075 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2024-06-27 22:32:47,076 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 228 transitions, 2997 flow [2024-06-27 22:32:47,076 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 22:32:47,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:47,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:47,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:32:47,076 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:47,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:47,076 INFO L85 PathProgramCache]: Analyzing trace with hash 49824594, now seen corresponding path program 1 times [2024-06-27 22:32:47,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:47,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331986949] [2024-06-27 22:32:47,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:47,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:48,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:48,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331986949] [2024-06-27 22:32:48,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331986949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:48,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:48,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:32:48,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445857112] [2024-06-27 22:32:48,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:48,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:32:48,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:48,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:32:48,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:32:48,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:32:48,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 228 transitions, 2997 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:48,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:48,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:32:48,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:48,498 INFO L124 PetriNetUnfolderBase]: 658/1324 cut-off events. [2024-06-27 22:32:48,499 INFO L125 PetriNetUnfolderBase]: For 26314/26314 co-relation queries the response was YES. [2024-06-27 22:32:48,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8238 conditions, 1324 events. 658/1324 cut-off events. For 26314/26314 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7980 event pairs, 152 based on Foata normal form. 1/1272 useless extension candidates. Maximal degree in co-relation 8166. Up to 993 conditions per place. [2024-06-27 22:32:48,508 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 189 selfloop transitions, 45 changer transitions 0/247 dead transitions. [2024-06-27 22:32:48,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 247 transitions, 3567 flow [2024-06-27 22:32:48,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:48,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:32:48,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098684210526315 [2024-06-27 22:32:48,509 INFO L175 Difference]: Start difference. First operand has 157 places, 228 transitions, 2997 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:32:48,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 247 transitions, 3567 flow [2024-06-27 22:32:48,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 247 transitions, 3394 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 22:32:48,563 INFO L231 Difference]: Finished difference. Result has 158 places, 231 transitions, 2994 flow [2024-06-27 22:32:48,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2824, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2994, PETRI_PLACES=158, PETRI_TRANSITIONS=231} [2024-06-27 22:32:48,564 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 116 predicate places. [2024-06-27 22:32:48,564 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 231 transitions, 2994 flow [2024-06-27 22:32:48,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:48,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:48,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:48,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:32:48,565 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:48,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash 872796284, now seen corresponding path program 5 times [2024-06-27 22:32:48,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:48,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016480190] [2024-06-27 22:32:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:48,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:49,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:49,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016480190] [2024-06-27 22:32:49,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016480190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:49,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:49,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:49,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468401797] [2024-06-27 22:32:49,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:49,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:49,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:49,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:49,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:49,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 231 transitions, 2994 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 22:32:49,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:49,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:49,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:50,269 INFO L124 PetriNetUnfolderBase]: 750/1467 cut-off events. [2024-06-27 22:32:50,269 INFO L125 PetriNetUnfolderBase]: For 29422/29422 co-relation queries the response was YES. [2024-06-27 22:32:50,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9389 conditions, 1467 events. 750/1467 cut-off events. For 29422/29422 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8797 event pairs, 117 based on Foata normal form. 1/1416 useless extension candidates. Maximal degree in co-relation 9317. Up to 1076 conditions per place. [2024-06-27 22:32:50,279 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 174 selfloop transitions, 78 changer transitions 0/261 dead transitions. [2024-06-27 22:32:50,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 261 transitions, 3836 flow [2024-06-27 22:32:50,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:50,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:50,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:32:50,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098684210526315 [2024-06-27 22:32:50,281 INFO L175 Difference]: Start difference. First operand has 158 places, 231 transitions, 2994 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:32:50,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 261 transitions, 3836 flow [2024-06-27 22:32:50,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 261 transitions, 3640 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 22:32:50,330 INFO L231 Difference]: Finished difference. Result has 160 places, 243 transitions, 3222 flow [2024-06-27 22:32:50,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3222, PETRI_PLACES=160, PETRI_TRANSITIONS=243} [2024-06-27 22:32:50,330 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-27 22:32:50,331 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 243 transitions, 3222 flow [2024-06-27 22:32:50,331 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 22:32:50,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:50,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:50,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:32:50,331 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:50,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:50,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1622743824, now seen corresponding path program 6 times [2024-06-27 22:32:50,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:50,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317789571] [2024-06-27 22:32:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:50,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:51,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:51,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317789571] [2024-06-27 22:32:51,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317789571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:51,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:51,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:51,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131564610] [2024-06-27 22:32:51,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:51,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:51,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:51,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:51,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:51,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:51,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 243 transitions, 3222 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 22:32:51,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:51,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:51,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:52,372 INFO L124 PetriNetUnfolderBase]: 748/1468 cut-off events. [2024-06-27 22:32:52,373 INFO L125 PetriNetUnfolderBase]: For 30885/30885 co-relation queries the response was YES. [2024-06-27 22:32:52,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9520 conditions, 1468 events. 748/1468 cut-off events. For 30885/30885 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8782 event pairs, 117 based on Foata normal form. 1/1417 useless extension candidates. Maximal degree in co-relation 9445. Up to 1074 conditions per place. [2024-06-27 22:32:52,385 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 176 selfloop transitions, 75 changer transitions 0/260 dead transitions. [2024-06-27 22:32:52,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 260 transitions, 3786 flow [2024-06-27 22:32:52,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:52,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:52,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:32:52,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098684210526315 [2024-06-27 22:32:52,387 INFO L175 Difference]: Start difference. First operand has 160 places, 243 transitions, 3222 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:32:52,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 260 transitions, 3786 flow [2024-06-27 22:32:52,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 260 transitions, 3603 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:52,458 INFO L231 Difference]: Finished difference. Result has 164 places, 243 transitions, 3199 flow [2024-06-27 22:32:52,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3039, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3199, PETRI_PLACES=164, PETRI_TRANSITIONS=243} [2024-06-27 22:32:52,458 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2024-06-27 22:32:52,458 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 243 transitions, 3199 flow [2024-06-27 22:32:52,459 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 22:32:52,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:52,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:52,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:32:52,459 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:52,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:52,460 INFO L85 PathProgramCache]: Analyzing trace with hash -474846068, now seen corresponding path program 7 times [2024-06-27 22:32:52,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:52,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656956580] [2024-06-27 22:32:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:52,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:53,603 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 22:32:53,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:53,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656956580] [2024-06-27 22:32:53,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656956580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:53,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:53,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:53,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233730081] [2024-06-27 22:32:53,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:53,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:53,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:53,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:53,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:53,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:53,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 243 transitions, 3199 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 22:32:53,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:53,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:53,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:54,099 INFO L124 PetriNetUnfolderBase]: 756/1482 cut-off events. [2024-06-27 22:32:54,099 INFO L125 PetriNetUnfolderBase]: For 31734/31734 co-relation queries the response was YES. [2024-06-27 22:32:54,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9705 conditions, 1482 events. 756/1482 cut-off events. For 31734/31734 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8882 event pairs, 123 based on Foata normal form. 1/1430 useless extension candidates. Maximal degree in co-relation 9628. Up to 956 conditions per place. [2024-06-27 22:32:54,112 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 131 selfloop transitions, 127 changer transitions 0/267 dead transitions. [2024-06-27 22:32:54,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 267 transitions, 4037 flow [2024-06-27 22:32:54,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:54,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:32:54,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098684210526315 [2024-06-27 22:32:54,113 INFO L175 Difference]: Start difference. First operand has 164 places, 243 transitions, 3199 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:32:54,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 267 transitions, 4037 flow [2024-06-27 22:32:54,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 267 transitions, 3837 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 22:32:54,179 INFO L231 Difference]: Finished difference. Result has 165 places, 249 transitions, 3453 flow [2024-06-27 22:32:54,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2999, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3453, PETRI_PLACES=165, PETRI_TRANSITIONS=249} [2024-06-27 22:32:54,179 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 123 predicate places. [2024-06-27 22:32:54,179 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 249 transitions, 3453 flow [2024-06-27 22:32:54,180 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 22:32:54,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:54,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:54,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:32:54,180 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:54,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:54,180 INFO L85 PathProgramCache]: Analyzing trace with hash -760176578, now seen corresponding path program 8 times [2024-06-27 22:32:54,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:54,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388253314] [2024-06-27 22:32:54,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:54,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:55,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:55,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:55,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388253314] [2024-06-27 22:32:55,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388253314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:55,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:55,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:55,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958964795] [2024-06-27 22:32:55,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:55,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:55,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:55,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:55,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:55,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:55,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 249 transitions, 3453 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 22:32:55,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:55,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:55,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:55,812 INFO L124 PetriNetUnfolderBase]: 764/1490 cut-off events. [2024-06-27 22:32:55,812 INFO L125 PetriNetUnfolderBase]: For 34763/34763 co-relation queries the response was YES. [2024-06-27 22:32:55,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10056 conditions, 1490 events. 764/1490 cut-off events. For 34763/34763 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8898 event pairs, 118 based on Foata normal form. 1/1438 useless extension candidates. Maximal degree in co-relation 9978. Up to 965 conditions per place. [2024-06-27 22:32:55,822 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 143 selfloop transitions, 118 changer transitions 0/270 dead transitions. [2024-06-27 22:32:55,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 270 transitions, 4211 flow [2024-06-27 22:32:55,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-27 22:32:55,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164473684210527 [2024-06-27 22:32:55,823 INFO L175 Difference]: Start difference. First operand has 165 places, 249 transitions, 3453 flow. Second operand 8 states and 157 transitions. [2024-06-27 22:32:55,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 270 transitions, 4211 flow [2024-06-27 22:32:55,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 270 transitions, 4012 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-06-27 22:32:55,905 INFO L231 Difference]: Finished difference. Result has 169 places, 252 transitions, 3596 flow [2024-06-27 22:32:55,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3596, PETRI_PLACES=169, PETRI_TRANSITIONS=252} [2024-06-27 22:32:55,906 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 127 predicate places. [2024-06-27 22:32:55,906 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 252 transitions, 3596 flow [2024-06-27 22:32:55,906 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 22:32:55,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:55,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:55,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:32:55,906 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:55,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:55,907 INFO L85 PathProgramCache]: Analyzing trace with hash -760183088, now seen corresponding path program 9 times [2024-06-27 22:32:55,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:55,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322816592] [2024-06-27 22:32:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:55,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:57,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:57,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322816592] [2024-06-27 22:32:57,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322816592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:57,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:57,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:32:57,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368986063] [2024-06-27 22:32:57,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:57,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:32:57,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:57,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:32:57,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:32:57,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:32:57,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 252 transitions, 3596 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 22:32:57,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:57,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:32:57,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:57,727 INFO L124 PetriNetUnfolderBase]: 762/1491 cut-off events. [2024-06-27 22:32:57,727 INFO L125 PetriNetUnfolderBase]: For 32634/32634 co-relation queries the response was YES. [2024-06-27 22:32:57,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10058 conditions, 1491 events. 762/1491 cut-off events. For 32634/32634 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8945 event pairs, 118 based on Foata normal form. 1/1439 useless extension candidates. Maximal degree in co-relation 9978. Up to 963 conditions per place. [2024-06-27 22:32:57,739 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 141 selfloop transitions, 119 changer transitions 0/269 dead transitions. [2024-06-27 22:32:57,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 269 transitions, 4182 flow [2024-06-27 22:32:57,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:57,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:32:57,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098684210526315 [2024-06-27 22:32:57,742 INFO L175 Difference]: Start difference. First operand has 169 places, 252 transitions, 3596 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:32:57,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 269 transitions, 4182 flow [2024-06-27 22:32:57,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 269 transitions, 3683 flow, removed 74 selfloop flow, removed 7 redundant places. [2024-06-27 22:32:57,819 INFO L231 Difference]: Finished difference. Result has 170 places, 252 transitions, 3341 flow [2024-06-27 22:32:57,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3097, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3341, PETRI_PLACES=170, PETRI_TRANSITIONS=252} [2024-06-27 22:32:57,820 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 128 predicate places. [2024-06-27 22:32:57,820 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 252 transitions, 3341 flow [2024-06-27 22:32:57,820 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 22:32:57,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:57,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:57,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:32:57,820 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:57,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:57,821 INFO L85 PathProgramCache]: Analyzing trace with hash -52010874, now seen corresponding path program 2 times [2024-06-27 22:32:57,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:57,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692849025] [2024-06-27 22:32:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:57,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:32:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:32:58,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:32:58,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692849025] [2024-06-27 22:32:58,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692849025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:32:58,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:32:58,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:32:58,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930859704] [2024-06-27 22:32:58,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:32:58,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:32:58,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:32:58,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:32:58,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:32:58,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:32:58,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 252 transitions, 3341 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:58,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:32:58,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:32:58,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:32:59,263 INFO L124 PetriNetUnfolderBase]: 735/1488 cut-off events. [2024-06-27 22:32:59,263 INFO L125 PetriNetUnfolderBase]: For 34204/34204 co-relation queries the response was YES. [2024-06-27 22:32:59,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9593 conditions, 1488 events. 735/1488 cut-off events. For 34204/34204 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9346 event pairs, 135 based on Foata normal form. 1/1426 useless extension candidates. Maximal degree in co-relation 9513. Up to 982 conditions per place. [2024-06-27 22:32:59,275 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 228 selfloop transitions, 50 changer transitions 0/291 dead transitions. [2024-06-27 22:32:59,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 291 transitions, 4387 flow [2024-06-27 22:32:59,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:32:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:32:59,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-27 22:32:59,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460526315789473 [2024-06-27 22:32:59,277 INFO L175 Difference]: Start difference. First operand has 170 places, 252 transitions, 3341 flow. Second operand 8 states and 166 transitions. [2024-06-27 22:32:59,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 291 transitions, 4387 flow [2024-06-27 22:32:59,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 291 transitions, 4133 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 22:32:59,344 INFO L231 Difference]: Finished difference. Result has 175 places, 264 transitions, 3457 flow [2024-06-27 22:32:59,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3457, PETRI_PLACES=175, PETRI_TRANSITIONS=264} [2024-06-27 22:32:59,345 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 133 predicate places. [2024-06-27 22:32:59,345 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 264 transitions, 3457 flow [2024-06-27 22:32:59,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:32:59,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:32:59,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:32:59,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:32:59,345 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:32:59,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:32:59,346 INFO L85 PathProgramCache]: Analyzing trace with hash -464717810, now seen corresponding path program 3 times [2024-06-27 22:32:59,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:32:59,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453627170] [2024-06-27 22:32:59,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:32:59,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:32:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:00,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:00,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453627170] [2024-06-27 22:33:00,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453627170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:00,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:00,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:00,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526170317] [2024-06-27 22:33:00,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:00,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:00,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:00,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:00,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:00,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:33:00,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 264 transitions, 3457 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:00,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:00,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:33:00,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:00,762 INFO L124 PetriNetUnfolderBase]: 758/1539 cut-off events. [2024-06-27 22:33:00,763 INFO L125 PetriNetUnfolderBase]: For 38177/38177 co-relation queries the response was YES. [2024-06-27 22:33:00,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10207 conditions, 1539 events. 758/1539 cut-off events. For 38177/38177 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9759 event pairs, 135 based on Foata normal form. 1/1475 useless extension candidates. Maximal degree in co-relation 10123. Up to 1006 conditions per place. [2024-06-27 22:33:00,775 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 222 selfloop transitions, 67 changer transitions 0/302 dead transitions. [2024-06-27 22:33:00,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 302 transitions, 4643 flow [2024-06-27 22:33:00,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-27 22:33:00,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5427631578947368 [2024-06-27 22:33:00,777 INFO L175 Difference]: Start difference. First operand has 175 places, 264 transitions, 3457 flow. Second operand 8 states and 165 transitions. [2024-06-27 22:33:00,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 302 transitions, 4643 flow [2024-06-27 22:33:00,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 302 transitions, 4550 flow, removed 40 selfloop flow, removed 1 redundant places. [2024-06-27 22:33:00,867 INFO L231 Difference]: Finished difference. Result has 186 places, 276 transitions, 3846 flow [2024-06-27 22:33:00,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3846, PETRI_PLACES=186, PETRI_TRANSITIONS=276} [2024-06-27 22:33:00,868 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 144 predicate places. [2024-06-27 22:33:00,868 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 276 transitions, 3846 flow [2024-06-27 22:33:00,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:00,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:00,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:00,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:33:00,869 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:00,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:00,869 INFO L85 PathProgramCache]: Analyzing trace with hash -464361620, now seen corresponding path program 4 times [2024-06-27 22:33:00,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:00,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389927033] [2024-06-27 22:33:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:00,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:02,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:02,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389927033] [2024-06-27 22:33:02,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389927033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:02,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:02,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:02,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487103003] [2024-06-27 22:33:02,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:02,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:02,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:02,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:02,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:02,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:02,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 276 transitions, 3846 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:02,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:02,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:02,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:02,684 INFO L124 PetriNetUnfolderBase]: 840/1664 cut-off events. [2024-06-27 22:33:02,684 INFO L125 PetriNetUnfolderBase]: For 40912/40912 co-relation queries the response was YES. [2024-06-27 22:33:02,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11563 conditions, 1664 events. 840/1664 cut-off events. For 40912/40912 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10351 event pairs, 245 based on Foata normal form. 1/1607 useless extension candidates. Maximal degree in co-relation 11473. Up to 1311 conditions per place. [2024-06-27 22:33:02,699 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 268 selfloop transitions, 22 changer transitions 0/299 dead transitions. [2024-06-27 22:33:02,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 299 transitions, 4590 flow [2024-06-27 22:33:02,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:02,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:02,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:33:02,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 22:33:02,701 INFO L175 Difference]: Start difference. First operand has 186 places, 276 transitions, 3846 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:33:02,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 299 transitions, 4590 flow [2024-06-27 22:33:02,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 299 transitions, 4436 flow, removed 48 selfloop flow, removed 2 redundant places. [2024-06-27 22:33:02,809 INFO L231 Difference]: Finished difference. Result has 193 places, 279 transitions, 3834 flow [2024-06-27 22:33:02,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3700, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3834, PETRI_PLACES=193, PETRI_TRANSITIONS=279} [2024-06-27 22:33:02,812 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 151 predicate places. [2024-06-27 22:33:02,812 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 279 transitions, 3834 flow [2024-06-27 22:33:02,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:02,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:02,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:02,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:33:02,813 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:02,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:02,813 INFO L85 PathProgramCache]: Analyzing trace with hash -474837140, now seen corresponding path program 5 times [2024-06-27 22:33:02,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:02,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232966212] [2024-06-27 22:33:02,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:02,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:03,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:03,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232966212] [2024-06-27 22:33:03,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232966212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:03,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:03,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:03,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786800366] [2024-06-27 22:33:03,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:03,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:03,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:03,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:03,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:03,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:33:03,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 279 transitions, 3834 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:03,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:03,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:33:03,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:04,145 INFO L124 PetriNetUnfolderBase]: 754/1530 cut-off events. [2024-06-27 22:33:04,145 INFO L125 PetriNetUnfolderBase]: For 38847/38847 co-relation queries the response was YES. [2024-06-27 22:33:04,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10310 conditions, 1530 events. 754/1530 cut-off events. For 38847/38847 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9716 event pairs, 135 based on Foata normal form. 1/1466 useless extension candidates. Maximal degree in co-relation 10218. Up to 1002 conditions per place. [2024-06-27 22:33:04,159 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 227 selfloop transitions, 66 changer transitions 0/306 dead transitions. [2024-06-27 22:33:04,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 306 transitions, 4691 flow [2024-06-27 22:33:04,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:04,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-27 22:33:04,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2024-06-27 22:33:04,160 INFO L175 Difference]: Start difference. First operand has 193 places, 279 transitions, 3834 flow. Second operand 8 states and 164 transitions. [2024-06-27 22:33:04,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 306 transitions, 4691 flow [2024-06-27 22:33:04,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 306 transitions, 4565 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:04,263 INFO L231 Difference]: Finished difference. Result has 197 places, 283 transitions, 3983 flow [2024-06-27 22:33:04,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3714, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3983, PETRI_PLACES=197, PETRI_TRANSITIONS=283} [2024-06-27 22:33:04,263 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 155 predicate places. [2024-06-27 22:33:04,263 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 283 transitions, 3983 flow [2024-06-27 22:33:04,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:04,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:04,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:04,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:33:04,264 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:04,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:04,264 INFO L85 PathProgramCache]: Analyzing trace with hash -464348724, now seen corresponding path program 1 times [2024-06-27 22:33:04,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:04,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763013367] [2024-06-27 22:33:04,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:04,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:05,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:05,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763013367] [2024-06-27 22:33:05,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763013367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:05,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:05,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:33:05,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964058975] [2024-06-27 22:33:05,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:05,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:33:05,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:05,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:33:05,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:33:06,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:06,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 283 transitions, 3983 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:06,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:06,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:06,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:06,617 INFO L124 PetriNetUnfolderBase]: 842/1669 cut-off events. [2024-06-27 22:33:06,617 INFO L125 PetriNetUnfolderBase]: For 41241/41241 co-relation queries the response was YES. [2024-06-27 22:33:06,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11557 conditions, 1669 events. 842/1669 cut-off events. For 41241/41241 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10346 event pairs, 247 based on Foata normal form. 2/1613 useless extension candidates. Maximal degree in co-relation 11462. Up to 1292 conditions per place. [2024-06-27 22:33:06,632 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 280 selfloop transitions, 24 changer transitions 0/313 dead transitions. [2024-06-27 22:33:06,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 313 transitions, 4765 flow [2024-06-27 22:33:06,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:06,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:33:06,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-06-27 22:33:06,633 INFO L175 Difference]: Start difference. First operand has 197 places, 283 transitions, 3983 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:33:06,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 313 transitions, 4765 flow [2024-06-27 22:33:06,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 313 transitions, 4637 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 22:33:06,746 INFO L231 Difference]: Finished difference. Result has 205 places, 286 transitions, 3949 flow [2024-06-27 22:33:06,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3855, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3949, PETRI_PLACES=205, PETRI_TRANSITIONS=286} [2024-06-27 22:33:06,746 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 163 predicate places. [2024-06-27 22:33:06,747 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 286 transitions, 3949 flow [2024-06-27 22:33:06,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:06,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:06,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:06,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:33:06,747 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:06,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:06,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1396121695, now seen corresponding path program 1 times [2024-06-27 22:33:06,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:06,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464519434] [2024-06-27 22:33:06,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:06,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:06,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:06,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464519434] [2024-06-27 22:33:06,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464519434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:06,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:06,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:33:06,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142572691] [2024-06-27 22:33:06,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:06,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:33:06,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:06,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:33:06,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:33:06,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2024-06-27 22:33:06,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 286 transitions, 3949 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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 22:33:06,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:06,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2024-06-27 22:33:06,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:06,981 INFO L124 PetriNetUnfolderBase]: 430/893 cut-off events. [2024-06-27 22:33:06,981 INFO L125 PetriNetUnfolderBase]: For 27362/27459 co-relation queries the response was YES. [2024-06-27 22:33:06,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6478 conditions, 893 events. 430/893 cut-off events. For 27362/27459 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5030 event pairs, 83 based on Foata normal form. 54/854 useless extension candidates. Maximal degree in co-relation 6381. Up to 245 conditions per place. [2024-06-27 22:33:06,989 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 71 selfloop transitions, 39 changer transitions 0/180 dead transitions. [2024-06-27 22:33:06,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 180 transitions, 2811 flow [2024-06-27 22:33:06,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:33:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:33:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-06-27 22:33:06,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2024-06-27 22:33:06,990 INFO L175 Difference]: Start difference. First operand has 205 places, 286 transitions, 3949 flow. Second operand 4 states and 108 transitions. [2024-06-27 22:33:06,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 180 transitions, 2811 flow [2024-06-27 22:33:07,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 180 transitions, 2196 flow, removed 52 selfloop flow, removed 45 redundant places. [2024-06-27 22:33:07,044 INFO L231 Difference]: Finished difference. Result has 163 places, 168 transitions, 2026 flow [2024-06-27 22:33:07,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2026, PETRI_PLACES=163, PETRI_TRANSITIONS=168} [2024-06-27 22:33:07,045 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-06-27 22:33:07,045 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 168 transitions, 2026 flow [2024-06-27 22:33:07,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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 22:33:07,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:07,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:07,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:33:07,046 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:07,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:07,047 INFO L85 PathProgramCache]: Analyzing trace with hash 594583635, now seen corresponding path program 1 times [2024-06-27 22:33:07,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:07,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32472564] [2024-06-27 22:33:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:07,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:08,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:08,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32472564] [2024-06-27 22:33:08,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32472564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:08,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:08,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:08,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840920186] [2024-06-27 22:33:08,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:08,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:08,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:08,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:08,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:08,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:33:08,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 168 transitions, 2026 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:08,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:08,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:33:08,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:08,791 INFO L124 PetriNetUnfolderBase]: 510/1006 cut-off events. [2024-06-27 22:33:08,791 INFO L125 PetriNetUnfolderBase]: For 32492/32504 co-relation queries the response was YES. [2024-06-27 22:33:08,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7085 conditions, 1006 events. 510/1006 cut-off events. For 32492/32504 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5335 event pairs, 101 based on Foata normal form. 2/941 useless extension candidates. Maximal degree in co-relation 7005. Up to 747 conditions per place. [2024-06-27 22:33:08,798 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 121 selfloop transitions, 35 changer transitions 0/188 dead transitions. [2024-06-27 22:33:08,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 188 transitions, 2474 flow [2024-06-27 22:33:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:08,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:33:08,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-27 22:33:08,800 INFO L175 Difference]: Start difference. First operand has 163 places, 168 transitions, 2026 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:33:08,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 188 transitions, 2474 flow [2024-06-27 22:33:08,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 188 transitions, 2472 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:33:08,864 INFO L231 Difference]: Finished difference. Result has 171 places, 170 transitions, 2169 flow [2024-06-27 22:33:08,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2169, PETRI_PLACES=171, PETRI_TRANSITIONS=170} [2024-06-27 22:33:08,865 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 129 predicate places. [2024-06-27 22:33:08,865 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 170 transitions, 2169 flow [2024-06-27 22:33:08,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:08,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:08,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:08,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:33:08,866 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:08,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:08,866 INFO L85 PathProgramCache]: Analyzing trace with hash 591696915, now seen corresponding path program 2 times [2024-06-27 22:33:08,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:08,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662724750] [2024-06-27 22:33:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:08,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:09,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:09,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662724750] [2024-06-27 22:33:09,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662724750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:09,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:09,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:09,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139832888] [2024-06-27 22:33:09,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:09,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:09,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:09,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:09,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:10,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:33:10,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 170 transitions, 2169 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:10,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:10,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:33:10,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:10,358 INFO L124 PetriNetUnfolderBase]: 540/1072 cut-off events. [2024-06-27 22:33:10,359 INFO L125 PetriNetUnfolderBase]: For 35243/35243 co-relation queries the response was YES. [2024-06-27 22:33:10,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7651 conditions, 1072 events. 540/1072 cut-off events. For 35243/35243 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5853 event pairs, 104 based on Foata normal form. 2/1011 useless extension candidates. Maximal degree in co-relation 7568. Up to 783 conditions per place. [2024-06-27 22:33:10,368 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 132 selfloop transitions, 31 changer transitions 0/195 dead transitions. [2024-06-27 22:33:10,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 195 transitions, 2689 flow [2024-06-27 22:33:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:10,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 22:33:10,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-27 22:33:10,370 INFO L175 Difference]: Start difference. First operand has 171 places, 170 transitions, 2169 flow. Second operand 9 states and 170 transitions. [2024-06-27 22:33:10,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 195 transitions, 2689 flow [2024-06-27 22:33:10,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 195 transitions, 2564 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:10,450 INFO L231 Difference]: Finished difference. Result has 174 places, 174 transitions, 2232 flow [2024-06-27 22:33:10,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2232, PETRI_PLACES=174, PETRI_TRANSITIONS=174} [2024-06-27 22:33:10,451 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 132 predicate places. [2024-06-27 22:33:10,451 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 174 transitions, 2232 flow [2024-06-27 22:33:10,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:10,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:10,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:10,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:33:10,451 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:10,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:10,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1227405421, now seen corresponding path program 1 times [2024-06-27 22:33:10,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:10,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871749700] [2024-06-27 22:33:10,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:10,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:11,640 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 22:33:11,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:11,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871749700] [2024-06-27 22:33:11,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871749700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:11,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:11,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:11,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059980909] [2024-06-27 22:33:11,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:11,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:11,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:11,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:11,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:11,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:11,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 174 transitions, 2232 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:11,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:11,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:11,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:12,088 INFO L124 PetriNetUnfolderBase]: 577/1117 cut-off events. [2024-06-27 22:33:12,089 INFO L125 PetriNetUnfolderBase]: For 35523/35523 co-relation queries the response was YES. [2024-06-27 22:33:12,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7871 conditions, 1117 events. 577/1117 cut-off events. For 35523/35523 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5980 event pairs, 120 based on Foata normal form. 1/1053 useless extension candidates. Maximal degree in co-relation 7786. Up to 912 conditions per place. [2024-06-27 22:33:12,098 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 143 selfloop transitions, 43 changer transitions 0/196 dead transitions. [2024-06-27 22:33:12,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 196 transitions, 2738 flow [2024-06-27 22:33:12,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:12,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:33:12,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-06-27 22:33:12,099 INFO L175 Difference]: Start difference. First operand has 174 places, 174 transitions, 2232 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:33:12,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 196 transitions, 2738 flow [2024-06-27 22:33:12,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 196 transitions, 2602 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:12,183 INFO L231 Difference]: Finished difference. Result has 179 places, 178 transitions, 2259 flow [2024-06-27 22:33:12,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2096, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2259, PETRI_PLACES=179, PETRI_TRANSITIONS=178} [2024-06-27 22:33:12,183 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 137 predicate places. [2024-06-27 22:33:12,184 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 178 transitions, 2259 flow [2024-06-27 22:33:12,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:12,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:12,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:12,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:33:12,184 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:12,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:12,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1176463037, now seen corresponding path program 3 times [2024-06-27 22:33:12,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:12,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097498493] [2024-06-27 22:33:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:12,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:13,361 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 22:33:13,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:13,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097498493] [2024-06-27 22:33:13,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097498493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:13,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:13,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:13,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289461354] [2024-06-27 22:33:13,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:13,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:13,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:13,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:13,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:13,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:33:13,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 178 transitions, 2259 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:13,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:13,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:33:13,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:13,906 INFO L124 PetriNetUnfolderBase]: 559/1108 cut-off events. [2024-06-27 22:33:13,906 INFO L125 PetriNetUnfolderBase]: For 37901/37901 co-relation queries the response was YES. [2024-06-27 22:33:13,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7856 conditions, 1108 events. 559/1108 cut-off events. For 37901/37901 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6065 event pairs, 120 based on Foata normal form. 2/1045 useless extension candidates. Maximal degree in co-relation 7769. Up to 818 conditions per place. [2024-06-27 22:33:13,915 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 121 selfloop transitions, 45 changer transitions 0/198 dead transitions. [2024-06-27 22:33:13,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 198 transitions, 2739 flow [2024-06-27 22:33:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:13,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:33:13,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-27 22:33:13,917 INFO L175 Difference]: Start difference. First operand has 179 places, 178 transitions, 2259 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:33:13,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 198 transitions, 2739 flow [2024-06-27 22:33:14,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 198 transitions, 2640 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:33:14,003 INFO L231 Difference]: Finished difference. Result has 180 places, 180 transitions, 2332 flow [2024-06-27 22:33:14,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2332, PETRI_PLACES=180, PETRI_TRANSITIONS=180} [2024-06-27 22:33:14,004 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 138 predicate places. [2024-06-27 22:33:14,004 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 180 transitions, 2332 flow [2024-06-27 22:33:14,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:14,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:14,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:14,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:33:14,005 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:14,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:14,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1544286735, now seen corresponding path program 2 times [2024-06-27 22:33:14,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:14,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383494222] [2024-06-27 22:33:14,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:14,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:15,332 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 22:33:15,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:15,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383494222] [2024-06-27 22:33:15,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383494222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:15,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:15,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:15,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886745789] [2024-06-27 22:33:15,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:15,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:15,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:15,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:15,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:15,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:15,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 180 transitions, 2332 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:15,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:15,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:15,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:15,968 INFO L124 PetriNetUnfolderBase]: 614/1179 cut-off events. [2024-06-27 22:33:15,969 INFO L125 PetriNetUnfolderBase]: For 41487/41487 co-relation queries the response was YES. [2024-06-27 22:33:15,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8538 conditions, 1179 events. 614/1179 cut-off events. For 41487/41487 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6339 event pairs, 123 based on Foata normal form. 1/1111 useless extension candidates. Maximal degree in co-relation 8450. Up to 896 conditions per place. [2024-06-27 22:33:15,978 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 126 selfloop transitions, 72 changer transitions 0/208 dead transitions. [2024-06-27 22:33:15,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 208 transitions, 3144 flow [2024-06-27 22:33:15,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:15,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:33:15,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-06-27 22:33:15,979 INFO L175 Difference]: Start difference. First operand has 180 places, 180 transitions, 2332 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:33:15,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 208 transitions, 3144 flow [2024-06-27 22:33:16,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 208 transitions, 2990 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:16,081 INFO L231 Difference]: Finished difference. Result has 184 places, 188 transitions, 2522 flow [2024-06-27 22:33:16,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2178, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2522, PETRI_PLACES=184, PETRI_TRANSITIONS=188} [2024-06-27 22:33:16,082 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 142 predicate places. [2024-06-27 22:33:16,082 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 188 transitions, 2522 flow [2024-06-27 22:33:16,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:16,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:16,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:16,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:33:16,083 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:16,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:16,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1536935085, now seen corresponding path program 3 times [2024-06-27 22:33:16,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:16,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248272439] [2024-06-27 22:33:16,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:16,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:17,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:17,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:17,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248272439] [2024-06-27 22:33:17,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248272439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:17,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:17,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:17,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465736578] [2024-06-27 22:33:17,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:17,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:17,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:17,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:17,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:17,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:17,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 188 transitions, 2522 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:17,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:17,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:17,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:18,253 INFO L124 PetriNetUnfolderBase]: 612/1175 cut-off events. [2024-06-27 22:33:18,254 INFO L125 PetriNetUnfolderBase]: For 40716/40716 co-relation queries the response was YES. [2024-06-27 22:33:18,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8491 conditions, 1175 events. 612/1175 cut-off events. For 40716/40716 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6304 event pairs, 129 based on Foata normal form. 1/1107 useless extension candidates. Maximal degree in co-relation 8401. Up to 894 conditions per place. [2024-06-27 22:33:18,263 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 131 selfloop transitions, 67 changer transitions 0/208 dead transitions. [2024-06-27 22:33:18,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 208 transitions, 3184 flow [2024-06-27 22:33:18,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:18,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:33:18,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-06-27 22:33:18,264 INFO L175 Difference]: Start difference. First operand has 184 places, 188 transitions, 2522 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:33:18,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 208 transitions, 3184 flow [2024-06-27 22:33:18,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 208 transitions, 3081 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:18,389 INFO L231 Difference]: Finished difference. Result has 189 places, 188 transitions, 2559 flow [2024-06-27 22:33:18,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2559, PETRI_PLACES=189, PETRI_TRANSITIONS=188} [2024-06-27 22:33:18,390 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 147 predicate places. [2024-06-27 22:33:18,390 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 188 transitions, 2559 flow [2024-06-27 22:33:18,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:18,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:18,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:18,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:33:18,390 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:18,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:18,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1544553645, now seen corresponding path program 4 times [2024-06-27 22:33:18,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:18,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711328586] [2024-06-27 22:33:18,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:18,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:18,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:19,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:19,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:19,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711328586] [2024-06-27 22:33:19,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711328586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:19,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:19,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:19,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854153095] [2024-06-27 22:33:19,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:19,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:19,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:19,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:19,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:19,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:19,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 188 transitions, 2559 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:19,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:19,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:19,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:20,038 INFO L124 PetriNetUnfolderBase]: 610/1172 cut-off events. [2024-06-27 22:33:20,038 INFO L125 PetriNetUnfolderBase]: For 40502/40502 co-relation queries the response was YES. [2024-06-27 22:33:20,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8508 conditions, 1172 events. 610/1172 cut-off events. For 40502/40502 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6283 event pairs, 129 based on Foata normal form. 1/1104 useless extension candidates. Maximal degree in co-relation 8416. Up to 892 conditions per place. [2024-06-27 22:33:20,048 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 118 selfloop transitions, 79 changer transitions 0/207 dead transitions. [2024-06-27 22:33:20,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 207 transitions, 3127 flow [2024-06-27 22:33:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:33:20,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 22:33:20,049 INFO L175 Difference]: Start difference. First operand has 189 places, 188 transitions, 2559 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:33:20,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 207 transitions, 3127 flow [2024-06-27 22:33:20,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 207 transitions, 2978 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:20,172 INFO L231 Difference]: Finished difference. Result has 192 places, 188 transitions, 2574 flow [2024-06-27 22:33:20,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2574, PETRI_PLACES=192, PETRI_TRANSITIONS=188} [2024-06-27 22:33:20,173 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 150 predicate places. [2024-06-27 22:33:20,173 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 188 transitions, 2574 flow [2024-06-27 22:33:20,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:20,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:20,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:20,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:33:20,174 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:20,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:20,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2036849615, now seen corresponding path program 4 times [2024-06-27 22:33:20,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:20,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084044745] [2024-06-27 22:33:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:20,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:21,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:21,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084044745] [2024-06-27 22:33:21,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084044745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:21,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:21,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:21,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601073250] [2024-06-27 22:33:21,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:21,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:21,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:21,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:21,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:21,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:33:21,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 188 transitions, 2574 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:21,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:21,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:33:21,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:21,572 INFO L124 PetriNetUnfolderBase]: 616/1220 cut-off events. [2024-06-27 22:33:21,572 INFO L125 PetriNetUnfolderBase]: For 44778/44778 co-relation queries the response was YES. [2024-06-27 22:33:21,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8781 conditions, 1220 events. 616/1220 cut-off events. For 44778/44778 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6929 event pairs, 124 based on Foata normal form. 2/1152 useless extension candidates. Maximal degree in co-relation 8688. Up to 901 conditions per place. [2024-06-27 22:33:21,582 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 151 selfloop transitions, 36 changer transitions 0/219 dead transitions. [2024-06-27 22:33:21,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 219 transitions, 3189 flow [2024-06-27 22:33:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:21,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:21,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 22:33:21,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-27 22:33:21,583 INFO L175 Difference]: Start difference. First operand has 192 places, 188 transitions, 2574 flow. Second operand 9 states and 170 transitions. [2024-06-27 22:33:21,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 219 transitions, 3189 flow [2024-06-27 22:33:21,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 219 transitions, 3050 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:33:21,704 INFO L231 Difference]: Finished difference. Result has 194 places, 196 transitions, 2683 flow [2024-06-27 22:33:21,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2435, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2683, PETRI_PLACES=194, PETRI_TRANSITIONS=196} [2024-06-27 22:33:21,705 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 152 predicate places. [2024-06-27 22:33:21,705 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 196 transitions, 2683 flow [2024-06-27 22:33:21,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:21,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:21,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:21,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:33:21,705 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:21,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:21,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2002595855, now seen corresponding path program 5 times [2024-06-27 22:33:21,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:21,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13012131] [2024-06-27 22:33:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:21,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:22,684 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 22:33:22,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:22,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13012131] [2024-06-27 22:33:22,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13012131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:22,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:22,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:22,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739138578] [2024-06-27 22:33:22,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:22,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:22,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:22,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:22,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:22,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:33:22,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 196 transitions, 2683 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:22,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:22,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:33:22,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:23,187 INFO L124 PetriNetUnfolderBase]: 635/1257 cut-off events. [2024-06-27 22:33:23,187 INFO L125 PetriNetUnfolderBase]: For 49133/49136 co-relation queries the response was YES. [2024-06-27 22:33:23,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9144 conditions, 1257 events. 635/1257 cut-off events. For 49133/49136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7202 event pairs, 146 based on Foata normal form. 2/1190 useless extension candidates. Maximal degree in co-relation 9049. Up to 965 conditions per place. [2024-06-27 22:33:23,198 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 150 selfloop transitions, 38 changer transitions 0/220 dead transitions. [2024-06-27 22:33:23,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 220 transitions, 3229 flow [2024-06-27 22:33:23,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:33:23,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-27 22:33:23,199 INFO L175 Difference]: Start difference. First operand has 194 places, 196 transitions, 2683 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:33:23,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 220 transitions, 3229 flow [2024-06-27 22:33:23,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 220 transitions, 3085 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:23,313 INFO L231 Difference]: Finished difference. Result has 198 places, 200 transitions, 2720 flow [2024-06-27 22:33:23,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2539, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2720, PETRI_PLACES=198, PETRI_TRANSITIONS=200} [2024-06-27 22:33:23,314 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 156 predicate places. [2024-06-27 22:33:23,314 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 200 transitions, 2720 flow [2024-06-27 22:33:23,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:23,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:23,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:23,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:33:23,315 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:23,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:23,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1253784357, now seen corresponding path program 6 times [2024-06-27 22:33:23,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:23,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036928128] [2024-06-27 22:33:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:23,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:24,163 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 22:33:24,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:24,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036928128] [2024-06-27 22:33:24,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036928128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:24,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:24,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:33:24,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52831294] [2024-06-27 22:33:24,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:24,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:33:24,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:24,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:33:24,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:33:24,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-27 22:33:24,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 200 transitions, 2720 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:24,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:24,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-27 22:33:24,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:24,634 INFO L124 PetriNetUnfolderBase]: 624/1293 cut-off events. [2024-06-27 22:33:24,634 INFO L125 PetriNetUnfolderBase]: For 50008/50014 co-relation queries the response was YES. [2024-06-27 22:33:24,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9023 conditions, 1293 events. 624/1293 cut-off events. For 50008/50014 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7728 event pairs, 58 based on Foata normal form. 5/1231 useless extension candidates. Maximal degree in co-relation 8926. Up to 670 conditions per place. [2024-06-27 22:33:24,646 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 112 selfloop transitions, 44 changer transitions 0/233 dead transitions. [2024-06-27 22:33:24,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 233 transitions, 3343 flow [2024-06-27 22:33:24,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:24,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:24,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-27 22:33:24,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-06-27 22:33:24,648 INFO L175 Difference]: Start difference. First operand has 198 places, 200 transitions, 2720 flow. Second operand 8 states and 168 transitions. [2024-06-27 22:33:24,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 233 transitions, 3343 flow [2024-06-27 22:33:24,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 233 transitions, 3202 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:24,779 INFO L231 Difference]: Finished difference. Result has 200 places, 207 transitions, 2839 flow [2024-06-27 22:33:24,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2579, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2839, PETRI_PLACES=200, PETRI_TRANSITIONS=207} [2024-06-27 22:33:24,780 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 158 predicate places. [2024-06-27 22:33:24,780 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 207 transitions, 2839 flow [2024-06-27 22:33:24,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:24,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:24,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:24,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:33:24,781 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:24,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:24,781 INFO L85 PathProgramCache]: Analyzing trace with hash -139401661, now seen corresponding path program 5 times [2024-06-27 22:33:24,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:24,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133625800] [2024-06-27 22:33:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:24,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:25,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:25,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133625800] [2024-06-27 22:33:25,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133625800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:25,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:25,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:25,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452754840] [2024-06-27 22:33:25,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:25,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:25,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:25,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:25,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:26,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:26,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 207 transitions, 2839 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:26,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:26,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:26,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:26,468 INFO L124 PetriNetUnfolderBase]: 716/1386 cut-off events. [2024-06-27 22:33:26,469 INFO L125 PetriNetUnfolderBase]: For 49264/49264 co-relation queries the response was YES. [2024-06-27 22:33:26,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9986 conditions, 1386 events. 716/1386 cut-off events. For 49264/49264 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7946 event pairs, 172 based on Foata normal form. 1/1312 useless extension candidates. Maximal degree in co-relation 9887. Up to 1155 conditions per place. [2024-06-27 22:33:26,482 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 173 selfloop transitions, 46 changer transitions 0/229 dead transitions. [2024-06-27 22:33:26,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 229 transitions, 3407 flow [2024-06-27 22:33:26,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:26,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:26,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:33:26,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-06-27 22:33:26,483 INFO L175 Difference]: Start difference. First operand has 200 places, 207 transitions, 2839 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:33:26,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 229 transitions, 3407 flow [2024-06-27 22:33:26,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 229 transitions, 3283 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-27 22:33:26,623 INFO L231 Difference]: Finished difference. Result has 206 places, 209 transitions, 2868 flow [2024-06-27 22:33:26,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2727, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2868, PETRI_PLACES=206, PETRI_TRANSITIONS=209} [2024-06-27 22:33:26,624 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 164 predicate places. [2024-06-27 22:33:26,625 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 209 transitions, 2868 flow [2024-06-27 22:33:26,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:26,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:26,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:26,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:33:26,625 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:26,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:26,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1544563565, now seen corresponding path program 1 times [2024-06-27 22:33:26,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:26,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524658328] [2024-06-27 22:33:26,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:26,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:27,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:27,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524658328] [2024-06-27 22:33:27,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524658328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:27,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:27,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:33:27,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141536570] [2024-06-27 22:33:27,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:27,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:33:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:27,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:33:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:33:27,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:33:27,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 209 transitions, 2868 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:27,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:27,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:33:27,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:28,342 INFO L124 PetriNetUnfolderBase]: 612/1236 cut-off events. [2024-06-27 22:33:28,342 INFO L125 PetriNetUnfolderBase]: For 46073/46083 co-relation queries the response was YES. [2024-06-27 22:33:28,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8688 conditions, 1236 events. 612/1236 cut-off events. For 46073/46083 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7280 event pairs, 175 based on Foata normal form. 1/1155 useless extension candidates. Maximal degree in co-relation 8588. Up to 1003 conditions per place. [2024-06-27 22:33:28,352 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 174 selfloop transitions, 33 changer transitions 0/222 dead transitions. [2024-06-27 22:33:28,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 222 transitions, 3342 flow [2024-06-27 22:33:28,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:33:28,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2024-06-27 22:33:28,353 INFO L175 Difference]: Start difference. First operand has 206 places, 209 transitions, 2868 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:33:28,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 222 transitions, 3342 flow [2024-06-27 22:33:28,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 222 transitions, 3064 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-27 22:33:28,488 INFO L231 Difference]: Finished difference. Result has 201 places, 211 transitions, 2699 flow [2024-06-27 22:33:28,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2590, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2699, PETRI_PLACES=201, PETRI_TRANSITIONS=211} [2024-06-27 22:33:28,489 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2024-06-27 22:33:28,489 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 211 transitions, 2699 flow [2024-06-27 22:33:28,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:28,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:28,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:28,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:33:28,489 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:28,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:28,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1544083535, now seen corresponding path program 7 times [2024-06-27 22:33:28,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:28,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976095912] [2024-06-27 22:33:28,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:28,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:29,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:29,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:29,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976095912] [2024-06-27 22:33:29,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976095912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:29,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:29,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:29,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614394737] [2024-06-27 22:33:29,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:29,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:29,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:29,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:29,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:29,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:33:29,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 211 transitions, 2699 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:29,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:29,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:33:29,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:30,185 INFO L124 PetriNetUnfolderBase]: 714/1407 cut-off events. [2024-06-27 22:33:30,185 INFO L125 PetriNetUnfolderBase]: For 51058/51058 co-relation queries the response was YES. [2024-06-27 22:33:30,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9816 conditions, 1407 events. 714/1407 cut-off events. For 51058/51058 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8311 event pairs, 167 based on Foata normal form. 2/1329 useless extension candidates. Maximal degree in co-relation 9717. Up to 1098 conditions per place. [2024-06-27 22:33:30,197 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 162 selfloop transitions, 37 changer transitions 0/231 dead transitions. [2024-06-27 22:33:30,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 231 transitions, 3261 flow [2024-06-27 22:33:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:30,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 22:33:30,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2024-06-27 22:33:30,199 INFO L175 Difference]: Start difference. First operand has 201 places, 211 transitions, 2699 flow. Second operand 8 states and 151 transitions. [2024-06-27 22:33:30,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 231 transitions, 3261 flow [2024-06-27 22:33:30,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 231 transitions, 3172 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:30,355 INFO L231 Difference]: Finished difference. Result has 202 places, 217 transitions, 2821 flow [2024-06-27 22:33:30,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2821, PETRI_PLACES=202, PETRI_TRANSITIONS=217} [2024-06-27 22:33:30,355 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 160 predicate places. [2024-06-27 22:33:30,355 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 217 transitions, 2821 flow [2024-06-27 22:33:30,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:30,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:30,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:30,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:33:30,356 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:30,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:30,356 INFO L85 PathProgramCache]: Analyzing trace with hash 974257971, now seen corresponding path program 8 times [2024-06-27 22:33:30,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:30,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870020830] [2024-06-27 22:33:30,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:30,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:31,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:31,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:31,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870020830] [2024-06-27 22:33:31,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870020830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:31,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:31,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:31,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928863828] [2024-06-27 22:33:31,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:31,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:31,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:31,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:31,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:31,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:33:31,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 217 transitions, 2821 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:31,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:31,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:33:31,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:31,925 INFO L124 PetriNetUnfolderBase]: 767/1507 cut-off events. [2024-06-27 22:33:31,926 INFO L125 PetriNetUnfolderBase]: For 56700/56700 co-relation queries the response was YES. [2024-06-27 22:33:31,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10631 conditions, 1507 events. 767/1507 cut-off events. For 56700/56700 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 9081 event pairs, 165 based on Foata normal form. 2/1423 useless extension candidates. Maximal degree in co-relation 10530. Up to 1141 conditions per place. [2024-06-27 22:33:31,940 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 177 selfloop transitions, 40 changer transitions 0/249 dead transitions. [2024-06-27 22:33:31,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 249 transitions, 3594 flow [2024-06-27 22:33:31,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:31,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:33:31,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-27 22:33:31,941 INFO L175 Difference]: Start difference. First operand has 202 places, 217 transitions, 2821 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:33:31,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 249 transitions, 3594 flow [2024-06-27 22:33:32,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 249 transitions, 3459 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:32,114 INFO L231 Difference]: Finished difference. Result has 206 places, 232 transitions, 3092 flow [2024-06-27 22:33:32,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2686, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3092, PETRI_PLACES=206, PETRI_TRANSITIONS=232} [2024-06-27 22:33:32,115 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 164 predicate places. [2024-06-27 22:33:32,115 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 232 transitions, 3092 flow [2024-06-27 22:33:32,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:32,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:32,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:32,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:33:32,116 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:32,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:32,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1286674355, now seen corresponding path program 9 times [2024-06-27 22:33:32,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:32,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857170528] [2024-06-27 22:33:32,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:32,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:33,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:33,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857170528] [2024-06-27 22:33:33,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857170528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:33,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:33,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:33,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109024389] [2024-06-27 22:33:33,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:33,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:33,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:33,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:33,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:33,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:33:33,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 232 transitions, 3092 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:33,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:33,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:33:33,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:33,942 INFO L124 PetriNetUnfolderBase]: 787/1545 cut-off events. [2024-06-27 22:33:33,942 INFO L125 PetriNetUnfolderBase]: For 60173/60173 co-relation queries the response was YES. [2024-06-27 22:33:33,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11032 conditions, 1545 events. 787/1545 cut-off events. For 60173/60173 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9372 event pairs, 188 based on Foata normal form. 2/1461 useless extension candidates. Maximal degree in co-relation 10929. Up to 1224 conditions per place. [2024-06-27 22:33:33,958 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 177 selfloop transitions, 41 changer transitions 0/250 dead transitions. [2024-06-27 22:33:33,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 250 transitions, 3682 flow [2024-06-27 22:33:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:33,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-27 22:33:33,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:33:33,959 INFO L175 Difference]: Start difference. First operand has 206 places, 232 transitions, 3092 flow. Second operand 8 states and 152 transitions. [2024-06-27 22:33:33,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 250 transitions, 3682 flow [2024-06-27 22:33:34,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 250 transitions, 3504 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:34,166 INFO L231 Difference]: Finished difference. Result has 209 places, 236 transitions, 3114 flow [2024-06-27 22:33:34,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3114, PETRI_PLACES=209, PETRI_TRANSITIONS=236} [2024-06-27 22:33:34,167 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2024-06-27 22:33:34,167 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 236 transitions, 3114 flow [2024-06-27 22:33:34,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:34,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:34,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:34,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:33:34,168 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:34,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:34,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1286680307, now seen corresponding path program 6 times [2024-06-27 22:33:34,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:34,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463839494] [2024-06-27 22:33:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:34,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:35,486 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 22:33:35,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:35,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463839494] [2024-06-27 22:33:35,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463839494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:35,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:35,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:35,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289831468] [2024-06-27 22:33:35,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:35,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:35,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:35,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:35,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:35,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:35,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 236 transitions, 3114 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:35,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:35,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:35,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:36,157 INFO L124 PetriNetUnfolderBase]: 842/1611 cut-off events. [2024-06-27 22:33:36,158 INFO L125 PetriNetUnfolderBase]: For 59352/59352 co-relation queries the response was YES. [2024-06-27 22:33:36,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11386 conditions, 1611 events. 842/1611 cut-off events. For 59352/59352 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 9592 event pairs, 197 based on Foata normal form. 1/1519 useless extension candidates. Maximal degree in co-relation 11281. Up to 1321 conditions per place. [2024-06-27 22:33:36,173 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 188 selfloop transitions, 63 changer transitions 0/261 dead transitions. [2024-06-27 22:33:36,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 261 transitions, 3916 flow [2024-06-27 22:33:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:36,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:33:36,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 22:33:36,175 INFO L175 Difference]: Start difference. First operand has 209 places, 236 transitions, 3114 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:33:36,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 261 transitions, 3916 flow [2024-06-27 22:33:36,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 261 transitions, 3754 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:36,365 INFO L231 Difference]: Finished difference. Result has 213 places, 246 transitions, 3256 flow [2024-06-27 22:33:36,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2952, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3256, PETRI_PLACES=213, PETRI_TRANSITIONS=246} [2024-06-27 22:33:36,366 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 171 predicate places. [2024-06-27 22:33:36,366 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 246 transitions, 3256 flow [2024-06-27 22:33:36,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:36,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:36,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:36,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:33:36,367 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:36,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:36,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1227196269, now seen corresponding path program 7 times [2024-06-27 22:33:36,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:36,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157081005] [2024-06-27 22:33:36,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:36,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:37,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:37,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157081005] [2024-06-27 22:33:37,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157081005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:37,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:37,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:33:37,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76501511] [2024-06-27 22:33:37,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:37,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:33:37,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:37,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:33:37,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:33:37,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:37,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 246 transitions, 3256 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:37,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:37,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:37,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:38,275 INFO L124 PetriNetUnfolderBase]: 848/1623 cut-off events. [2024-06-27 22:33:38,275 INFO L125 PetriNetUnfolderBase]: For 59079/59079 co-relation queries the response was YES. [2024-06-27 22:33:38,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11436 conditions, 1623 events. 848/1623 cut-off events. For 59079/59079 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 9695 event pairs, 197 based on Foata normal form. 1/1530 useless extension candidates. Maximal degree in co-relation 11329. Up to 1346 conditions per place. [2024-06-27 22:33:38,291 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 193 selfloop transitions, 60 changer transitions 0/263 dead transitions. [2024-06-27 22:33:38,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 263 transitions, 3980 flow [2024-06-27 22:33:38,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:38,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 22:33:38,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45526315789473687 [2024-06-27 22:33:38,292 INFO L175 Difference]: Start difference. First operand has 213 places, 246 transitions, 3256 flow. Second operand 10 states and 173 transitions. [2024-06-27 22:33:38,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 263 transitions, 3980 flow [2024-06-27 22:33:38,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 263 transitions, 3871 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:38,549 INFO L231 Difference]: Finished difference. Result has 218 places, 248 transitions, 3327 flow [2024-06-27 22:33:38,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3155, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3327, PETRI_PLACES=218, PETRI_TRANSITIONS=248} [2024-06-27 22:33:38,550 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 176 predicate places. [2024-06-27 22:33:38,550 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 248 transitions, 3327 flow [2024-06-27 22:33:38,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:38,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:38,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:38,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:33:38,551 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:38,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:38,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1294298867, now seen corresponding path program 8 times [2024-06-27 22:33:38,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:38,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617229837] [2024-06-27 22:33:38,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:38,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:39,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:39,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:39,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617229837] [2024-06-27 22:33:39,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617229837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:39,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:39,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:39,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92638861] [2024-06-27 22:33:39,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:39,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:39,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:39,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:39,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:39,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:39,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 248 transitions, 3327 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:39,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:39,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:39,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:40,224 INFO L124 PetriNetUnfolderBase]: 846/1620 cut-off events. [2024-06-27 22:33:40,224 INFO L125 PetriNetUnfolderBase]: For 58220/58220 co-relation queries the response was YES. [2024-06-27 22:33:40,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11410 conditions, 1620 events. 846/1620 cut-off events. For 58220/58220 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 9675 event pairs, 197 based on Foata normal form. 1/1527 useless extension candidates. Maximal degree in co-relation 11301. Up to 1326 conditions per place. [2024-06-27 22:33:40,237 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 179 selfloop transitions, 73 changer transitions 0/262 dead transitions. [2024-06-27 22:33:40,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 262 transitions, 3883 flow [2024-06-27 22:33:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:33:40,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2024-06-27 22:33:40,238 INFO L175 Difference]: Start difference. First operand has 218 places, 248 transitions, 3327 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:33:40,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 262 transitions, 3883 flow [2024-06-27 22:33:40,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 262 transitions, 3711 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 22:33:40,405 INFO L231 Difference]: Finished difference. Result has 219 places, 248 transitions, 3309 flow [2024-06-27 22:33:40,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3155, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3309, PETRI_PLACES=219, PETRI_TRANSITIONS=248} [2024-06-27 22:33:40,406 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 177 predicate places. [2024-06-27 22:33:40,406 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 248 transitions, 3309 flow [2024-06-27 22:33:40,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:40,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:40,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:40,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:33:40,406 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:40,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:40,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2090844111, now seen corresponding path program 10 times [2024-06-27 22:33:40,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:40,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569610861] [2024-06-27 22:33:40,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:40,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:41,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:41,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569610861] [2024-06-27 22:33:41,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569610861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:41,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:41,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:33:41,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890581463] [2024-06-27 22:33:41,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:41,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:33:41,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:41,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:33:41,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:33:41,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:33:41,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 248 transitions, 3309 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:41,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:41,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:33:41,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:42,324 INFO L124 PetriNetUnfolderBase]: 804/1574 cut-off events. [2024-06-27 22:33:42,325 INFO L125 PetriNetUnfolderBase]: For 57561/57561 co-relation queries the response was YES. [2024-06-27 22:33:42,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11017 conditions, 1574 events. 804/1574 cut-off events. For 57561/57561 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 9596 event pairs, 191 based on Foata normal form. 2/1482 useless extension candidates. Maximal degree in co-relation 10907. Up to 1222 conditions per place. [2024-06-27 22:33:42,340 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 181 selfloop transitions, 51 changer transitions 0/264 dead transitions. [2024-06-27 22:33:42,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 264 transitions, 3925 flow [2024-06-27 22:33:42,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:33:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:33:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 22:33:42,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2024-06-27 22:33:42,342 INFO L175 Difference]: Start difference. First operand has 219 places, 248 transitions, 3309 flow. Second operand 8 states and 151 transitions. [2024-06-27 22:33:42,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 264 transitions, 3925 flow [2024-06-27 22:33:42,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 264 transitions, 3771 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:33:42,537 INFO L231 Difference]: Finished difference. Result has 219 places, 250 transitions, 3364 flow [2024-06-27 22:33:42,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3155, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3364, PETRI_PLACES=219, PETRI_TRANSITIONS=250} [2024-06-27 22:33:42,538 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 177 predicate places. [2024-06-27 22:33:42,538 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 250 transitions, 3364 flow [2024-06-27 22:33:42,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:42,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:42,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:42,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:33:42,538 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:42,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:42,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2083486509, now seen corresponding path program 9 times [2024-06-27 22:33:42,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:42,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446768131] [2024-06-27 22:33:42,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:42,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:43,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:43,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:43,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446768131] [2024-06-27 22:33:43,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446768131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:43,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:43,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:43,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635545791] [2024-06-27 22:33:43,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:43,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:43,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:43,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:43,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:44,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:44,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 250 transitions, 3364 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:44,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:44,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:44,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:44,858 INFO L124 PetriNetUnfolderBase]: 865/1652 cut-off events. [2024-06-27 22:33:44,858 INFO L125 PetriNetUnfolderBase]: For 62496/62496 co-relation queries the response was YES. [2024-06-27 22:33:44,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11720 conditions, 1652 events. 865/1652 cut-off events. For 62496/62496 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9931 event pairs, 200 based on Foata normal form. 1/1555 useless extension candidates. Maximal degree in co-relation 11609. Up to 1182 conditions per place. [2024-06-27 22:33:44,873 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 165 selfloop transitions, 100 changer transitions 0/275 dead transitions. [2024-06-27 22:33:44,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 275 transitions, 4508 flow [2024-06-27 22:33:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:33:44,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 22:33:44,875 INFO L175 Difference]: Start difference. First operand has 219 places, 250 transitions, 3364 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:33:44,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 275 transitions, 4508 flow [2024-06-27 22:33:45,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 275 transitions, 4315 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 22:33:45,087 INFO L231 Difference]: Finished difference. Result has 223 places, 258 transitions, 3580 flow [2024-06-27 22:33:45,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3171, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3580, PETRI_PLACES=223, PETRI_TRANSITIONS=258} [2024-06-27 22:33:45,088 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 181 predicate places. [2024-06-27 22:33:45,088 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 258 transitions, 3580 flow [2024-06-27 22:33:45,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:45,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:45,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:45,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:33:45,089 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:45,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:45,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2083219599, now seen corresponding path program 10 times [2024-06-27 22:33:45,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:45,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109319501] [2024-06-27 22:33:45,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:45,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:46,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:46,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109319501] [2024-06-27 22:33:46,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109319501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:46,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:46,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:33:46,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750098702] [2024-06-27 22:33:46,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:46,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:33:46,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:46,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:33:46,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:33:46,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:46,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 258 transitions, 3580 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:46,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:46,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:46,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:46,803 INFO L124 PetriNetUnfolderBase]: 863/1650 cut-off events. [2024-06-27 22:33:46,803 INFO L125 PetriNetUnfolderBase]: For 60232/60232 co-relation queries the response was YES. [2024-06-27 22:33:46,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11584 conditions, 1650 events. 863/1650 cut-off events. For 60232/60232 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9939 event pairs, 194 based on Foata normal form. 1/1552 useless extension candidates. Maximal degree in co-relation 11472. Up to 1289 conditions per place. [2024-06-27 22:33:46,824 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 187 selfloop transitions, 75 changer transitions 0/272 dead transitions. [2024-06-27 22:33:46,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 272 transitions, 4158 flow [2024-06-27 22:33:46,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:46,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:33:46,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-06-27 22:33:46,829 INFO L175 Difference]: Start difference. First operand has 223 places, 258 transitions, 3580 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:33:46,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 272 transitions, 4158 flow [2024-06-27 22:33:47,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 272 transitions, 3905 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-27 22:33:47,028 INFO L231 Difference]: Finished difference. Result has 228 places, 258 transitions, 3482 flow [2024-06-27 22:33:47,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3482, PETRI_PLACES=228, PETRI_TRANSITIONS=258} [2024-06-27 22:33:47,029 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 186 predicate places. [2024-06-27 22:33:47,029 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 258 transitions, 3482 flow [2024-06-27 22:33:47,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:47,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:47,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:47,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:33:47,030 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:47,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:47,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1619964423, now seen corresponding path program 11 times [2024-06-27 22:33:47,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:47,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336046890] [2024-06-27 22:33:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:47,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:48,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:48,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336046890] [2024-06-27 22:33:48,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336046890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:48,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:48,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:48,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818138973] [2024-06-27 22:33:48,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:48,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:48,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:48,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:48,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:48,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:48,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 258 transitions, 3482 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:48,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:48,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:48,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:49,262 INFO L124 PetriNetUnfolderBase]: 861/1646 cut-off events. [2024-06-27 22:33:49,262 INFO L125 PetriNetUnfolderBase]: For 56970/56970 co-relation queries the response was YES. [2024-06-27 22:33:49,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11309 conditions, 1646 events. 861/1646 cut-off events. For 56970/56970 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9909 event pairs, 200 based on Foata normal form. 1/1549 useless extension candidates. Maximal degree in co-relation 11196. Up to 1178 conditions per place. [2024-06-27 22:33:49,276 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 160 selfloop transitions, 103 changer transitions 0/273 dead transitions. [2024-06-27 22:33:49,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 273 transitions, 4186 flow [2024-06-27 22:33:49,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:49,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:49,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:33:49,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 22:33:49,279 INFO L175 Difference]: Start difference. First operand has 228 places, 258 transitions, 3482 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:33:49,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 273 transitions, 4186 flow [2024-06-27 22:33:49,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 273 transitions, 4009 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 22:33:49,473 INFO L231 Difference]: Finished difference. Result has 229 places, 258 transitions, 3516 flow [2024-06-27 22:33:49,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3305, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3516, PETRI_PLACES=229, PETRI_TRANSITIONS=258} [2024-06-27 22:33:49,473 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 187 predicate places. [2024-06-27 22:33:49,473 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 258 transitions, 3516 flow [2024-06-27 22:33:49,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:49,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:49,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:49,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:33:49,474 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:49,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:49,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1835058221, now seen corresponding path program 12 times [2024-06-27 22:33:49,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:49,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375807310] [2024-06-27 22:33:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:49,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:50,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:50,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375807310] [2024-06-27 22:33:50,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375807310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:50,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:50,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:33:50,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912971427] [2024-06-27 22:33:50,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:50,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:33:50,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:50,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:33:50,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:33:50,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:50,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 258 transitions, 3516 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:50,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:50,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:50,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:51,211 INFO L124 PetriNetUnfolderBase]: 867/1655 cut-off events. [2024-06-27 22:33:51,212 INFO L125 PetriNetUnfolderBase]: For 58755/58755 co-relation queries the response was YES. [2024-06-27 22:33:51,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11488 conditions, 1655 events. 867/1655 cut-off events. For 58755/58755 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9942 event pairs, 200 based on Foata normal form. 1/1557 useless extension candidates. Maximal degree in co-relation 11374. Up to 1295 conditions per place. [2024-06-27 22:33:51,228 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 180 selfloop transitions, 84 changer transitions 0/274 dead transitions. [2024-06-27 22:33:51,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 274 transitions, 4146 flow [2024-06-27 22:33:51,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:51,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:51,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:33:51,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-06-27 22:33:51,229 INFO L175 Difference]: Start difference. First operand has 229 places, 258 transitions, 3516 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:33:51,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 274 transitions, 4146 flow [2024-06-27 22:33:51,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 274 transitions, 3889 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 22:33:51,413 INFO L231 Difference]: Finished difference. Result has 230 places, 260 transitions, 3484 flow [2024-06-27 22:33:51,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3269, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3484, PETRI_PLACES=230, PETRI_TRANSITIONS=260} [2024-06-27 22:33:51,414 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 188 predicate places. [2024-06-27 22:33:51,414 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 260 transitions, 3484 flow [2024-06-27 22:33:51,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:51,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:51,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:51,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:33:51,414 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:51,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:51,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1835325131, now seen corresponding path program 13 times [2024-06-27 22:33:51,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:51,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671742842] [2024-06-27 22:33:51,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:51,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:52,899 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 22:33:52,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:52,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671742842] [2024-06-27 22:33:52,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671742842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:52,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:52,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:33:52,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456938381] [2024-06-27 22:33:52,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:52,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:33:52,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:52,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:33:52,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:33:52,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:52,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 260 transitions, 3484 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:52,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:52,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:52,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:53,702 INFO L124 PetriNetUnfolderBase]: 873/1670 cut-off events. [2024-06-27 22:33:53,702 INFO L125 PetriNetUnfolderBase]: For 60041/60041 co-relation queries the response was YES. [2024-06-27 22:33:53,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11440 conditions, 1670 events. 873/1670 cut-off events. For 60041/60041 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10069 event pairs, 200 based on Foata normal form. 1/1571 useless extension candidates. Maximal degree in co-relation 11326. Up to 1192 conditions per place. [2024-06-27 22:33:53,717 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 150 selfloop transitions, 117 changer transitions 0/277 dead transitions. [2024-06-27 22:33:53,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 277 transitions, 4242 flow [2024-06-27 22:33:53,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:33:53,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2024-06-27 22:33:53,718 INFO L175 Difference]: Start difference. First operand has 230 places, 260 transitions, 3484 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:33:53,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 277 transitions, 4242 flow [2024-06-27 22:33:53,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 277 transitions, 4053 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:33:53,889 INFO L231 Difference]: Finished difference. Result has 232 places, 262 transitions, 3576 flow [2024-06-27 22:33:53,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3295, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3576, PETRI_PLACES=232, PETRI_TRANSITIONS=262} [2024-06-27 22:33:53,889 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 190 predicate places. [2024-06-27 22:33:53,890 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 262 transitions, 3576 flow [2024-06-27 22:33:53,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:53,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:53,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:53,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:33:53,890 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:53,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:53,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1521358991, now seen corresponding path program 14 times [2024-06-27 22:33:53,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:53,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468129606] [2024-06-27 22:33:53,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:53,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:55,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:55,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468129606] [2024-06-27 22:33:55,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468129606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:55,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:55,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:33:55,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174339144] [2024-06-27 22:33:55,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:55,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:33:55,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:55,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:33:55,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:33:55,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:33:55,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 262 transitions, 3576 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:55,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:55,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:33:55,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:55,720 INFO L124 PetriNetUnfolderBase]: 871/1668 cut-off events. [2024-06-27 22:33:55,720 INFO L125 PetriNetUnfolderBase]: For 58756/58756 co-relation queries the response was YES. [2024-06-27 22:33:55,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11454 conditions, 1668 events. 871/1668 cut-off events. For 58756/58756 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10052 event pairs, 176 based on Foata normal form. 1/1565 useless extension candidates. Maximal degree in co-relation 11339. Up to 1301 conditions per place. [2024-06-27 22:33:55,737 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 172 selfloop transitions, 94 changer transitions 0/276 dead transitions. [2024-06-27 22:33:55,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 276 transitions, 4162 flow [2024-06-27 22:33:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:33:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:33:55,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:33:55,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-06-27 22:33:55,738 INFO L175 Difference]: Start difference. First operand has 232 places, 262 transitions, 3576 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:33:55,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 276 transitions, 4162 flow [2024-06-27 22:33:55,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 276 transitions, 3855 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 22:33:55,960 INFO L231 Difference]: Finished difference. Result has 233 places, 262 transitions, 3462 flow [2024-06-27 22:33:55,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3269, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3462, PETRI_PLACES=233, PETRI_TRANSITIONS=262} [2024-06-27 22:33:55,961 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 191 predicate places. [2024-06-27 22:33:55,961 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 262 transitions, 3462 flow [2024-06-27 22:33:55,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:55,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:55,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:55,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:33:55,961 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:55,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:55,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1521349071, now seen corresponding path program 2 times [2024-06-27 22:33:55,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:55,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437765290] [2024-06-27 22:33:55,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:55,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:57,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:57,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:57,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437765290] [2024-06-27 22:33:57,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437765290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:57,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:57,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:33:57,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669075633] [2024-06-27 22:33:57,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:57,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:33:57,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:57,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:33:57,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:33:57,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:33:57,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 262 transitions, 3462 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:57,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:57,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:33:57,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:57,571 INFO L124 PetriNetUnfolderBase]: 722/1447 cut-off events. [2024-06-27 22:33:57,571 INFO L125 PetriNetUnfolderBase]: For 57752/57765 co-relation queries the response was YES. [2024-06-27 22:33:57,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9937 conditions, 1447 events. 722/1447 cut-off events. For 57752/57765 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8901 event pairs, 182 based on Foata normal form. 1/1342 useless extension candidates. Maximal degree in co-relation 9821. Up to 1152 conditions per place. [2024-06-27 22:33:57,586 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 207 selfloop transitions, 51 changer transitions 0/273 dead transitions. [2024-06-27 22:33:57,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 273 transitions, 4036 flow [2024-06-27 22:33:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:57,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:33:57,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-06-27 22:33:57,587 INFO L175 Difference]: Start difference. First operand has 233 places, 262 transitions, 3462 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:33:57,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 273 transitions, 4036 flow [2024-06-27 22:33:57,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 273 transitions, 3836 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 22:33:57,811 INFO L231 Difference]: Finished difference. Result has 233 places, 264 transitions, 3411 flow [2024-06-27 22:33:57,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3411, PETRI_PLACES=233, PETRI_TRANSITIONS=264} [2024-06-27 22:33:57,812 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 191 predicate places. [2024-06-27 22:33:57,812 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 264 transitions, 3411 flow [2024-06-27 22:33:57,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:57,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:57,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:57,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:33:57,813 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:57,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:57,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1835048301, now seen corresponding path program 3 times [2024-06-27 22:33:57,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:57,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268204231] [2024-06-27 22:33:57,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:57,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:33:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:33:59,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:33:59,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268204231] [2024-06-27 22:33:59,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268204231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:33:59,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:33:59,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:33:59,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632874190] [2024-06-27 22:33:59,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:33:59,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:33:59,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:33:59,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:33:59,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:33:59,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:33:59,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 264 transitions, 3411 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:59,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:33:59,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:33:59,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:33:59,582 INFO L124 PetriNetUnfolderBase]: 726/1451 cut-off events. [2024-06-27 22:33:59,583 INFO L125 PetriNetUnfolderBase]: For 59770/59780 co-relation queries the response was YES. [2024-06-27 22:33:59,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9945 conditions, 1451 events. 726/1451 cut-off events. For 59770/59780 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8915 event pairs, 204 based on Foata normal form. 1/1349 useless extension candidates. Maximal degree in co-relation 9829. Up to 1158 conditions per place. [2024-06-27 22:33:59,596 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 213 selfloop transitions, 47 changer transitions 0/275 dead transitions. [2024-06-27 22:33:59,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 275 transitions, 3993 flow [2024-06-27 22:33:59,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:33:59,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:33:59,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:33:59,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:33:59,598 INFO L175 Difference]: Start difference. First operand has 233 places, 264 transitions, 3411 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:33:59,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 275 transitions, 3993 flow [2024-06-27 22:33:59,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 275 transitions, 3864 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 22:33:59,802 INFO L231 Difference]: Finished difference. Result has 235 places, 266 transitions, 3427 flow [2024-06-27 22:33:59,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3282, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3427, PETRI_PLACES=235, PETRI_TRANSITIONS=266} [2024-06-27 22:33:59,803 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 193 predicate places. [2024-06-27 22:33:59,803 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 266 transitions, 3427 flow [2024-06-27 22:33:59,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:33:59,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:33:59,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:33:59,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:33:59,804 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:33:59,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:33:59,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1509921231, now seen corresponding path program 4 times [2024-06-27 22:33:59,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:33:59,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657172304] [2024-06-27 22:33:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:33:59,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:33:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:01,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:01,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:01,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657172304] [2024-06-27 22:34:01,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657172304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:01,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:01,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:01,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782906231] [2024-06-27 22:34:01,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:01,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:01,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:01,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:01,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:01,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:01,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 266 transitions, 3427 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:01,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:01,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:01,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:01,896 INFO L124 PetriNetUnfolderBase]: 897/1714 cut-off events. [2024-06-27 22:34:01,897 INFO L125 PetriNetUnfolderBase]: For 65219/65219 co-relation queries the response was YES. [2024-06-27 22:34:01,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11663 conditions, 1714 events. 897/1714 cut-off events. For 65219/65219 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 10370 event pairs, 294 based on Foata normal form. 1/1617 useless extension candidates. Maximal degree in co-relation 11546. Up to 1472 conditions per place. [2024-06-27 22:34:01,914 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 257 selfloop transitions, 22 changer transitions 0/289 dead transitions. [2024-06-27 22:34:01,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 289 transitions, 4283 flow [2024-06-27 22:34:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:34:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:34:01,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:34:01,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-06-27 22:34:01,915 INFO L175 Difference]: Start difference. First operand has 235 places, 266 transitions, 3427 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:34:01,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 289 transitions, 4283 flow [2024-06-27 22:34:02,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 289 transitions, 4158 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:02,151 INFO L231 Difference]: Finished difference. Result has 239 places, 270 transitions, 3447 flow [2024-06-27 22:34:02,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3302, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3447, PETRI_PLACES=239, PETRI_TRANSITIONS=270} [2024-06-27 22:34:02,152 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 197 predicate places. [2024-06-27 22:34:02,152 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 270 transitions, 3447 flow [2024-06-27 22:34:02,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:02,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:02,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:02,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:34:02,153 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:02,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:02,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2083209679, now seen corresponding path program 5 times [2024-06-27 22:34:02,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:02,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647943839] [2024-06-27 22:34:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:02,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:03,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:03,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647943839] [2024-06-27 22:34:03,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647943839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:03,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:03,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:03,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678612404] [2024-06-27 22:34:03,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:03,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:03,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:03,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:03,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:03,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:34:03,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 270 transitions, 3447 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:03,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:03,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:34:03,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:03,893 INFO L124 PetriNetUnfolderBase]: 734/1463 cut-off events. [2024-06-27 22:34:03,894 INFO L125 PetriNetUnfolderBase]: For 63073/63083 co-relation queries the response was YES. [2024-06-27 22:34:03,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10052 conditions, 1463 events. 734/1463 cut-off events. For 63073/63083 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8961 event pairs, 204 based on Foata normal form. 1/1359 useless extension candidates. Maximal degree in co-relation 9933. Up to 1170 conditions per place. [2024-06-27 22:34:03,909 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 222 selfloop transitions, 44 changer transitions 0/281 dead transitions. [2024-06-27 22:34:03,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 281 transitions, 4049 flow [2024-06-27 22:34:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:34:03,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 22:34:03,910 INFO L175 Difference]: Start difference. First operand has 239 places, 270 transitions, 3447 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:34:03,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 281 transitions, 4049 flow [2024-06-27 22:34:04,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 281 transitions, 3982 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:04,141 INFO L231 Difference]: Finished difference. Result has 241 places, 272 transitions, 3527 flow [2024-06-27 22:34:04,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3380, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3527, PETRI_PLACES=241, PETRI_TRANSITIONS=272} [2024-06-27 22:34:04,142 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 199 predicate places. [2024-06-27 22:34:04,142 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 272 transitions, 3527 flow [2024-06-27 22:34:04,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:04,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:04,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:04,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:34:04,143 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:04,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:04,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1510307181, now seen corresponding path program 6 times [2024-06-27 22:34:04,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:04,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808773423] [2024-06-27 22:34:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:04,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:05,617 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 22:34:05,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:05,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808773423] [2024-06-27 22:34:05,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808773423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:05,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:05,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:05,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279894166] [2024-06-27 22:34:05,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:05,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:05,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:05,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:05,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:05,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:05,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 272 transitions, 3527 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:05,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:05,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:05,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:06,309 INFO L124 PetriNetUnfolderBase]: 893/1708 cut-off events. [2024-06-27 22:34:06,309 INFO L125 PetriNetUnfolderBase]: For 63168/63168 co-relation queries the response was YES. [2024-06-27 22:34:06,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11494 conditions, 1708 events. 893/1708 cut-off events. For 63168/63168 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 10371 event pairs, 294 based on Foata normal form. 1/1611 useless extension candidates. Maximal degree in co-relation 11374. Up to 1477 conditions per place. [2024-06-27 22:34:06,327 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 260 selfloop transitions, 18 changer transitions 0/288 dead transitions. [2024-06-27 22:34:06,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 288 transitions, 4145 flow [2024-06-27 22:34:06,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:06,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:06,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:34:06,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-06-27 22:34:06,329 INFO L175 Difference]: Start difference. First operand has 241 places, 272 transitions, 3527 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:34:06,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 288 transitions, 4145 flow [2024-06-27 22:34:06,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 288 transitions, 3988 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:06,734 INFO L231 Difference]: Finished difference. Result has 244 places, 272 transitions, 3411 flow [2024-06-27 22:34:06,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3370, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3411, PETRI_PLACES=244, PETRI_TRANSITIONS=272} [2024-06-27 22:34:06,735 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 202 predicate places. [2024-06-27 22:34:06,735 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 272 transitions, 3411 flow [2024-06-27 22:34:06,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:06,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:06,735 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 22:34:06,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:34:06,735 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:06,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:06,736 INFO L85 PathProgramCache]: Analyzing trace with hash -813164233, now seen corresponding path program 1 times [2024-06-27 22:34:06,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:06,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416670511] [2024-06-27 22:34:06,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:06,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:08,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:08,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416670511] [2024-06-27 22:34:08,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416670511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:08,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:08,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:08,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813254744] [2024-06-27 22:34:08,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:08,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:08,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:08,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:08,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:08,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:08,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 272 transitions, 3411 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:08,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:08,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:08,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:08,726 INFO L124 PetriNetUnfolderBase]: 922/1748 cut-off events. [2024-06-27 22:34:08,727 INFO L125 PetriNetUnfolderBase]: For 72842/72842 co-relation queries the response was YES. [2024-06-27 22:34:08,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11839 conditions, 1748 events. 922/1748 cut-off events. For 72842/72842 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 10580 event pairs, 180 based on Foata normal form. 2/1650 useless extension candidates. Maximal degree in co-relation 11717. Up to 1424 conditions per place. [2024-06-27 22:34:08,744 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 243 selfloop transitions, 46 changer transitions 0/299 dead transitions. [2024-06-27 22:34:08,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 299 transitions, 4355 flow [2024-06-27 22:34:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:34:08,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 22:34:08,745 INFO L175 Difference]: Start difference. First operand has 244 places, 272 transitions, 3411 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:34:08,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 299 transitions, 4355 flow [2024-06-27 22:34:09,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 299 transitions, 4314 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:34:09,045 INFO L231 Difference]: Finished difference. Result has 245 places, 276 transitions, 3617 flow [2024-06-27 22:34:09,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3370, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3617, PETRI_PLACES=245, PETRI_TRANSITIONS=276} [2024-06-27 22:34:09,046 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-06-27 22:34:09,046 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 276 transitions, 3617 flow [2024-06-27 22:34:09,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:09,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:09,046 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 22:34:09,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:34:09,047 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:09,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1870071347, now seen corresponding path program 2 times [2024-06-27 22:34:09,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:09,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113851803] [2024-06-27 22:34:09,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:09,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:10,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:10,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113851803] [2024-06-27 22:34:10,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113851803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:10,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:10,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:10,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711152838] [2024-06-27 22:34:10,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:10,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:10,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:10,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:10,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:10,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:10,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 276 transitions, 3617 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:10,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:10,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:10,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:10,941 INFO L124 PetriNetUnfolderBase]: 919/1751 cut-off events. [2024-06-27 22:34:10,941 INFO L125 PetriNetUnfolderBase]: For 69954/69954 co-relation queries the response was YES. [2024-06-27 22:34:10,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11829 conditions, 1751 events. 919/1751 cut-off events. For 69954/69954 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 10609 event pairs, 194 based on Foata normal form. 2/1653 useless extension candidates. Maximal degree in co-relation 11706. Up to 1484 conditions per place. [2024-06-27 22:34:10,960 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 245 selfloop transitions, 41 changer transitions 0/296 dead transitions. [2024-06-27 22:34:10,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 296 transitions, 4261 flow [2024-06-27 22:34:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:34:10,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2024-06-27 22:34:10,962 INFO L175 Difference]: Start difference. First operand has 245 places, 276 transitions, 3617 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:34:10,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 296 transitions, 4261 flow [2024-06-27 22:34:11,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 296 transitions, 4085 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-06-27 22:34:11,226 INFO L231 Difference]: Finished difference. Result has 249 places, 276 transitions, 3530 flow [2024-06-27 22:34:11,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3441, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3530, PETRI_PLACES=249, PETRI_TRANSITIONS=276} [2024-06-27 22:34:11,227 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-06-27 22:34:11,227 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 276 transitions, 3530 flow [2024-06-27 22:34:11,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:11,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:11,227 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 22:34:11,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:34:11,227 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:11,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:11,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1959737297, now seen corresponding path program 3 times [2024-06-27 22:34:11,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:11,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759827534] [2024-06-27 22:34:11,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:11,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:12,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:12,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759827534] [2024-06-27 22:34:12,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759827534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:12,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:12,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:12,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697595949] [2024-06-27 22:34:12,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:12,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:12,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:12,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:12,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:12,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:12,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 276 transitions, 3530 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:12,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:12,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:12,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:12,985 INFO L124 PetriNetUnfolderBase]: 932/1770 cut-off events. [2024-06-27 22:34:12,985 INFO L125 PetriNetUnfolderBase]: For 71187/71187 co-relation queries the response was YES. [2024-06-27 22:34:12,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11889 conditions, 1770 events. 932/1770 cut-off events. For 71187/71187 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 10740 event pairs, 153 based on Foata normal form. 2/1667 useless extension candidates. Maximal degree in co-relation 11764. Up to 1415 conditions per place. [2024-06-27 22:34:13,003 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 249 selfloop transitions, 44 changer transitions 0/303 dead transitions. [2024-06-27 22:34:13,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 303 transitions, 4287 flow [2024-06-27 22:34:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:13,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:34:13,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 22:34:13,005 INFO L175 Difference]: Start difference. First operand has 249 places, 276 transitions, 3530 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:34:13,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 303 transitions, 4287 flow [2024-06-27 22:34:13,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 303 transitions, 4188 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 22:34:13,237 INFO L231 Difference]: Finished difference. Result has 250 places, 278 transitions, 3607 flow [2024-06-27 22:34:13,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3431, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3607, PETRI_PLACES=250, PETRI_TRANSITIONS=278} [2024-06-27 22:34:13,237 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 208 predicate places. [2024-06-27 22:34:13,237 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 278 transitions, 3607 flow [2024-06-27 22:34:13,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:13,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:13,240 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 22:34:13,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:34:13,240 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:13,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash -605136493, now seen corresponding path program 1 times [2024-06-27 22:34:13,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:13,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502387900] [2024-06-27 22:34:13,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:13,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:14,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:14,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502387900] [2024-06-27 22:34:14,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502387900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:14,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:14,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:14,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283627618] [2024-06-27 22:34:14,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:14,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:14,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:14,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:14,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:14,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:14,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 278 transitions, 3607 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:14,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:14,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:14,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:15,322 INFO L124 PetriNetUnfolderBase]: 938/1786 cut-off events. [2024-06-27 22:34:15,322 INFO L125 PetriNetUnfolderBase]: For 71717/71717 co-relation queries the response was YES. [2024-06-27 22:34:15,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12077 conditions, 1786 events. 938/1786 cut-off events. For 71717/71717 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 10883 event pairs, 202 based on Foata normal form. 1/1686 useless extension candidates. Maximal degree in co-relation 11951. Up to 1481 conditions per place. [2024-06-27 22:34:15,341 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 228 selfloop transitions, 66 changer transitions 0/304 dead transitions. [2024-06-27 22:34:15,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 304 transitions, 4321 flow [2024-06-27 22:34:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:34:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:34:15,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:34:15,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45933014354066987 [2024-06-27 22:34:15,342 INFO L175 Difference]: Start difference. First operand has 250 places, 278 transitions, 3607 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:34:15,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 304 transitions, 4321 flow [2024-06-27 22:34:15,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 304 transitions, 4167 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:15,626 INFO L231 Difference]: Finished difference. Result has 253 places, 280 transitions, 3639 flow [2024-06-27 22:34:15,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3453, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3639, PETRI_PLACES=253, PETRI_TRANSITIONS=280} [2024-06-27 22:34:15,627 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 211 predicate places. [2024-06-27 22:34:15,627 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 280 transitions, 3639 flow [2024-06-27 22:34:15,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:15,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:15,627 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 22:34:15,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:34:15,627 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:15,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:15,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1809178965, now seen corresponding path program 4 times [2024-06-27 22:34:15,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:15,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805663443] [2024-06-27 22:34:15,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:15,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:17,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:17,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805663443] [2024-06-27 22:34:17,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805663443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:17,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:17,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:17,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412927781] [2024-06-27 22:34:17,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:17,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:17,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:17,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:17,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:17,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:17,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 280 transitions, 3639 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:17,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:17,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:17,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:17,866 INFO L124 PetriNetUnfolderBase]: 951/1807 cut-off events. [2024-06-27 22:34:17,867 INFO L125 PetriNetUnfolderBase]: For 76084/76084 co-relation queries the response was YES. [2024-06-27 22:34:17,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12244 conditions, 1807 events. 951/1807 cut-off events. For 76084/76084 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 11032 event pairs, 197 based on Foata normal form. 2/1706 useless extension candidates. Maximal degree in co-relation 12118. Up to 1499 conditions per place. [2024-06-27 22:34:17,884 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 227 selfloop transitions, 65 changer transitions 0/302 dead transitions. [2024-06-27 22:34:17,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 302 transitions, 4377 flow [2024-06-27 22:34:17,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:17,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:17,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:34:17,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 22:34:17,885 INFO L175 Difference]: Start difference. First operand has 253 places, 280 transitions, 3639 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:34:17,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 302 transitions, 4377 flow [2024-06-27 22:34:18,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 302 transitions, 4211 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 22:34:18,240 INFO L231 Difference]: Finished difference. Result has 254 places, 282 transitions, 3693 flow [2024-06-27 22:34:18,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3473, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3693, PETRI_PLACES=254, PETRI_TRANSITIONS=282} [2024-06-27 22:34:18,241 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 212 predicate places. [2024-06-27 22:34:18,241 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 282 transitions, 3693 flow [2024-06-27 22:34:18,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:18,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:18,241 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 22:34:18,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:34:18,242 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:18,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:18,242 INFO L85 PathProgramCache]: Analyzing trace with hash 559166793, now seen corresponding path program 5 times [2024-06-27 22:34:18,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:18,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833876949] [2024-06-27 22:34:18,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:18,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:19,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:19,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833876949] [2024-06-27 22:34:19,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833876949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:19,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:19,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:19,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90080454] [2024-06-27 22:34:19,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:19,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:19,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:19,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:19,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:20,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:20,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 282 transitions, 3693 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:20,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:20,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:20,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:20,703 INFO L124 PetriNetUnfolderBase]: 964/1830 cut-off events. [2024-06-27 22:34:20,703 INFO L125 PetriNetUnfolderBase]: For 79289/79289 co-relation queries the response was YES. [2024-06-27 22:34:20,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12413 conditions, 1830 events. 964/1830 cut-off events. For 79289/79289 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11207 event pairs, 204 based on Foata normal form. 2/1728 useless extension candidates. Maximal degree in co-relation 12287. Up to 1522 conditions per place. [2024-06-27 22:34:20,723 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 234 selfloop transitions, 60 changer transitions 0/304 dead transitions. [2024-06-27 22:34:20,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 304 transitions, 4439 flow [2024-06-27 22:34:20,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:20,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:20,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 22:34:20,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2024-06-27 22:34:20,725 INFO L175 Difference]: Start difference. First operand has 254 places, 282 transitions, 3693 flow. Second operand 10 states and 176 transitions. [2024-06-27 22:34:20,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 304 transitions, 4439 flow [2024-06-27 22:34:21,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 304 transitions, 4237 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:21,031 INFO L231 Difference]: Finished difference. Result has 256 places, 284 transitions, 3705 flow [2024-06-27 22:34:21,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3491, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3705, PETRI_PLACES=256, PETRI_TRANSITIONS=284} [2024-06-27 22:34:21,031 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 214 predicate places. [2024-06-27 22:34:21,031 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 284 transitions, 3705 flow [2024-06-27 22:34:21,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:21,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:21,032 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 22:34:21,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:34:21,032 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:21,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:21,032 INFO L85 PathProgramCache]: Analyzing trace with hash -705938747, now seen corresponding path program 6 times [2024-06-27 22:34:21,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:21,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517019946] [2024-06-27 22:34:21,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:21,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:22,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:22,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517019946] [2024-06-27 22:34:22,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517019946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:22,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:22,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:22,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343686868] [2024-06-27 22:34:22,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:22,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:22,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:22,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:22,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:22,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:22,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 284 transitions, 3705 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:22,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:22,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:22,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:23,194 INFO L124 PetriNetUnfolderBase]: 977/1853 cut-off events. [2024-06-27 22:34:23,194 INFO L125 PetriNetUnfolderBase]: For 81380/81380 co-relation queries the response was YES. [2024-06-27 22:34:23,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12555 conditions, 1853 events. 977/1853 cut-off events. For 81380/81380 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 11392 event pairs, 204 based on Foata normal form. 2/1751 useless extension candidates. Maximal degree in co-relation 12428. Up to 1479 conditions per place. [2024-06-27 22:34:23,212 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 232 selfloop transitions, 66 changer transitions 0/308 dead transitions. [2024-06-27 22:34:23,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 308 transitions, 4471 flow [2024-06-27 22:34:23,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:23,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:34:23,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 22:34:23,213 INFO L175 Difference]: Start difference. First operand has 256 places, 284 transitions, 3705 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:34:23,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 308 transitions, 4471 flow [2024-06-27 22:34:23,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 308 transitions, 4275 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:23,582 INFO L231 Difference]: Finished difference. Result has 258 places, 286 transitions, 3739 flow [2024-06-27 22:34:23,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3509, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3739, PETRI_PLACES=258, PETRI_TRANSITIONS=286} [2024-06-27 22:34:23,583 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 216 predicate places. [2024-06-27 22:34:23,583 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 286 transitions, 3739 flow [2024-06-27 22:34:23,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:23,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:23,583 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 22:34:23,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:34:23,584 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:23,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:23,584 INFO L85 PathProgramCache]: Analyzing trace with hash -705754173, now seen corresponding path program 2 times [2024-06-27 22:34:23,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:23,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642694723] [2024-06-27 22:34:23,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:23,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:25,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:25,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642694723] [2024-06-27 22:34:25,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642694723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:25,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:25,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:25,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450495594] [2024-06-27 22:34:25,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:25,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:25,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:25,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:25,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:25,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:34:25,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 286 transitions, 3739 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:25,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:25,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:34:25,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:25,830 INFO L124 PetriNetUnfolderBase]: 825/1624 cut-off events. [2024-06-27 22:34:25,830 INFO L125 PetriNetUnfolderBase]: For 82809/82818 co-relation queries the response was YES. [2024-06-27 22:34:25,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11362 conditions, 1624 events. 825/1624 cut-off events. For 82809/82818 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10108 event pairs, 209 based on Foata normal form. 3/1512 useless extension candidates. Maximal degree in co-relation 11234. Up to 1241 conditions per place. [2024-06-27 22:34:25,847 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 205 selfloop transitions, 82 changer transitions 0/302 dead transitions. [2024-06-27 22:34:25,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 302 transitions, 4583 flow [2024-06-27 22:34:25,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:25,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:34:25,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-27 22:34:25,848 INFO L175 Difference]: Start difference. First operand has 258 places, 286 transitions, 3739 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:34:25,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 302 transitions, 4583 flow [2024-06-27 22:34:26,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 302 transitions, 4371 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:26,225 INFO L231 Difference]: Finished difference. Result has 259 places, 290 transitions, 3790 flow [2024-06-27 22:34:26,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3527, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3790, PETRI_PLACES=259, PETRI_TRANSITIONS=290} [2024-06-27 22:34:26,226 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 217 predicate places. [2024-06-27 22:34:26,226 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 290 transitions, 3790 flow [2024-06-27 22:34:26,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:26,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:26,226 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 22:34:26,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:34:26,227 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:26,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:26,227 INFO L85 PathProgramCache]: Analyzing trace with hash 628249649, now seen corresponding path program 3 times [2024-06-27 22:34:26,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:26,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720946995] [2024-06-27 22:34:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:26,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:27,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:27,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720946995] [2024-06-27 22:34:27,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720946995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:27,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:27,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:27,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140846415] [2024-06-27 22:34:27,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:27,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:27,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:27,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:27,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:27,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:34:27,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 290 transitions, 3790 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:27,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:27,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:34:27,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:27,997 INFO L124 PetriNetUnfolderBase]: 831/1633 cut-off events. [2024-06-27 22:34:27,997 INFO L125 PetriNetUnfolderBase]: For 84081/84090 co-relation queries the response was YES. [2024-06-27 22:34:28,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11413 conditions, 1633 events. 831/1633 cut-off events. For 84081/84090 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 10156 event pairs, 209 based on Foata normal form. 7/1523 useless extension candidates. Maximal degree in co-relation 11286. Up to 1249 conditions per place. [2024-06-27 22:34:28,015 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 198 selfloop transitions, 90 changer transitions 0/304 dead transitions. [2024-06-27 22:34:28,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 304 transitions, 4598 flow [2024-06-27 22:34:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 22:34:28,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-27 22:34:28,016 INFO L175 Difference]: Start difference. First operand has 259 places, 290 transitions, 3790 flow. Second operand 9 states and 174 transitions. [2024-06-27 22:34:28,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 304 transitions, 4598 flow [2024-06-27 22:34:28,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 304 transitions, 4474 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 22:34:28,381 INFO L231 Difference]: Finished difference. Result has 263 places, 292 transitions, 3901 flow [2024-06-27 22:34:28,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3670, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3901, PETRI_PLACES=263, PETRI_TRANSITIONS=292} [2024-06-27 22:34:28,382 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 221 predicate places. [2024-06-27 22:34:28,382 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 292 transitions, 3901 flow [2024-06-27 22:34:28,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:28,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:28,382 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 22:34:28,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:34:28,383 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:28,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:28,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1800897811, now seen corresponding path program 4 times [2024-06-27 22:34:28,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:28,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715390558] [2024-06-27 22:34:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:28,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:29,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:29,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715390558] [2024-06-27 22:34:29,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715390558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:29,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:29,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:29,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7366892] [2024-06-27 22:34:29,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:29,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:29,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:29,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:29,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:29,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:34:29,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 292 transitions, 3901 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:29,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:29,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:34:29,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:30,172 INFO L124 PetriNetUnfolderBase]: 837/1644 cut-off events. [2024-06-27 22:34:30,172 INFO L125 PetriNetUnfolderBase]: For 85827/85836 co-relation queries the response was YES. [2024-06-27 22:34:30,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11648 conditions, 1644 events. 837/1644 cut-off events. For 85827/85836 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10209 event pairs, 209 based on Foata normal form. 7/1531 useless extension candidates. Maximal degree in co-relation 11519. Up to 1257 conditions per place. [2024-06-27 22:34:30,190 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 189 selfloop transitions, 101 changer transitions 0/306 dead transitions. [2024-06-27 22:34:30,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 306 transitions, 4715 flow [2024-06-27 22:34:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:30,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 22:34:30,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058479532163743 [2024-06-27 22:34:30,191 INFO L175 Difference]: Start difference. First operand has 263 places, 292 transitions, 3901 flow. Second operand 9 states and 173 transitions. [2024-06-27 22:34:30,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 306 transitions, 4715 flow [2024-06-27 22:34:30,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 306 transitions, 4489 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:30,612 INFO L231 Difference]: Finished difference. Result has 265 places, 294 transitions, 3932 flow [2024-06-27 22:34:30,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3681, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3932, PETRI_PLACES=265, PETRI_TRANSITIONS=294} [2024-06-27 22:34:30,613 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 223 predicate places. [2024-06-27 22:34:30,613 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 294 transitions, 3932 flow [2024-06-27 22:34:30,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:30,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:30,613 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 22:34:30,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:34:30,614 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:30,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:30,614 INFO L85 PathProgramCache]: Analyzing trace with hash 636820529, now seen corresponding path program 5 times [2024-06-27 22:34:30,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:30,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929537812] [2024-06-27 22:34:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:30,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:31,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:31,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929537812] [2024-06-27 22:34:31,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929537812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:31,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:31,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:31,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290531924] [2024-06-27 22:34:31,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:31,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:31,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:31,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:31,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:31,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:34:31,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 294 transitions, 3932 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:31,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:31,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:34:31,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:32,142 INFO L124 PetriNetUnfolderBase]: 835/1641 cut-off events. [2024-06-27 22:34:32,142 INFO L125 PetriNetUnfolderBase]: For 83189/83198 co-relation queries the response was YES. [2024-06-27 22:34:32,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11498 conditions, 1641 events. 835/1641 cut-off events. For 83189/83198 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10257 event pairs, 209 based on Foata normal form. 7/1529 useless extension candidates. Maximal degree in co-relation 11368. Up to 1255 conditions per place. [2024-06-27 22:34:32,160 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 176 selfloop transitions, 113 changer transitions 0/305 dead transitions. [2024-06-27 22:34:32,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 305 transitions, 4536 flow [2024-06-27 22:34:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:32,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:32,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:34:32,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:34:32,161 INFO L175 Difference]: Start difference. First operand has 265 places, 294 transitions, 3932 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:34:32,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 305 transitions, 4536 flow [2024-06-27 22:34:32,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 305 transitions, 4273 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:32,566 INFO L231 Difference]: Finished difference. Result has 267 places, 294 transitions, 3900 flow [2024-06-27 22:34:32,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3669, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3900, PETRI_PLACES=267, PETRI_TRANSITIONS=294} [2024-06-27 22:34:32,566 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-27 22:34:32,566 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 294 transitions, 3900 flow [2024-06-27 22:34:32,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:32,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:32,567 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 22:34:32,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:34:32,567 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:32,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:32,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1348956019, now seen corresponding path program 7 times [2024-06-27 22:34:32,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:32,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255159227] [2024-06-27 22:34:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:32,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:33,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:33,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255159227] [2024-06-27 22:34:33,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255159227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:33,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:33,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:33,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768114278] [2024-06-27 22:34:33,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:33,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:33,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:33,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:33,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:33,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 294 transitions, 3900 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:33,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:33,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:33,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:34,243 INFO L124 PetriNetUnfolderBase]: 1021/1934 cut-off events. [2024-06-27 22:34:34,243 INFO L125 PetriNetUnfolderBase]: For 89479/89479 co-relation queries the response was YES. [2024-06-27 22:34:34,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13217 conditions, 1934 events. 1021/1934 cut-off events. For 89479/89479 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 12009 event pairs, 198 based on Foata normal form. 2/1827 useless extension candidates. Maximal degree in co-relation 13085. Up to 1576 conditions per place. [2024-06-27 22:34:34,264 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 271 selfloop transitions, 44 changer transitions 0/325 dead transitions. [2024-06-27 22:34:34,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 325 transitions, 4730 flow [2024-06-27 22:34:34,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:34:34,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 22:34:34,265 INFO L175 Difference]: Start difference. First operand has 267 places, 294 transitions, 3900 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:34:34,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 325 transitions, 4730 flow [2024-06-27 22:34:34,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 325 transitions, 4493 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:34,760 INFO L231 Difference]: Finished difference. Result has 269 places, 298 transitions, 3868 flow [2024-06-27 22:34:34,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3663, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3868, PETRI_PLACES=269, PETRI_TRANSITIONS=298} [2024-06-27 22:34:34,760 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 227 predicate places. [2024-06-27 22:34:34,760 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 298 transitions, 3868 flow [2024-06-27 22:34:34,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:34,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:34,761 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 22:34:34,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:34:34,761 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:34,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:34,761 INFO L85 PathProgramCache]: Analyzing trace with hash -62239219, now seen corresponding path program 8 times [2024-06-27 22:34:34,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:34,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954618779] [2024-06-27 22:34:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:34,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:35,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:35,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954618779] [2024-06-27 22:34:35,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954618779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:35,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:35,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:35,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403355796] [2024-06-27 22:34:35,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:35,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:35,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:35,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:35,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:35,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:35,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 298 transitions, 3868 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:35,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:35,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:35,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:36,446 INFO L124 PetriNetUnfolderBase]: 1041/1973 cut-off events. [2024-06-27 22:34:36,446 INFO L125 PetriNetUnfolderBase]: For 93237/93237 co-relation queries the response was YES. [2024-06-27 22:34:36,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13432 conditions, 1973 events. 1041/1973 cut-off events. For 93237/93237 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 12330 event pairs, 239 based on Foata normal form. 2/1869 useless extension candidates. Maximal degree in co-relation 13298. Up to 1688 conditions per place. [2024-06-27 22:34:36,469 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 270 selfloop transitions, 44 changer transitions 0/324 dead transitions. [2024-06-27 22:34:36,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 324 transitions, 4682 flow [2024-06-27 22:34:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:34:36,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2024-06-27 22:34:36,471 INFO L175 Difference]: Start difference. First operand has 269 places, 298 transitions, 3868 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:34:36,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 324 transitions, 4682 flow [2024-06-27 22:34:36,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 324 transitions, 4517 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:36,893 INFO L231 Difference]: Finished difference. Result has 271 places, 302 transitions, 3914 flow [2024-06-27 22:34:36,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3703, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3914, PETRI_PLACES=271, PETRI_TRANSITIONS=302} [2024-06-27 22:34:36,893 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 229 predicate places. [2024-06-27 22:34:36,893 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 302 transitions, 3914 flow [2024-06-27 22:34:36,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:36,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:36,894 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 22:34:36,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:34:36,894 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:36,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:36,894 INFO L85 PathProgramCache]: Analyzing trace with hash -31020979, now seen corresponding path program 9 times [2024-06-27 22:34:36,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:36,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133077417] [2024-06-27 22:34:36,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:36,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:37,969 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 22:34:37,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:37,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133077417] [2024-06-27 22:34:37,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133077417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:37,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:37,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:37,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133311251] [2024-06-27 22:34:37,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:37,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:37,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:37,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:37,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:38,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:38,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 302 transitions, 3914 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:38,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:38,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:38,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:38,678 INFO L124 PetriNetUnfolderBase]: 1061/2008 cut-off events. [2024-06-27 22:34:38,678 INFO L125 PetriNetUnfolderBase]: For 94867/94867 co-relation queries the response was YES. [2024-06-27 22:34:38,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13645 conditions, 2008 events. 1061/2008 cut-off events. For 94867/94867 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 12575 event pairs, 236 based on Foata normal form. 2/1906 useless extension candidates. Maximal degree in co-relation 13510. Up to 1657 conditions per place. [2024-06-27 22:34:38,701 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 269 selfloop transitions, 51 changer transitions 0/330 dead transitions. [2024-06-27 22:34:38,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 330 transitions, 4752 flow [2024-06-27 22:34:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:38,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:34:38,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-06-27 22:34:38,702 INFO L175 Difference]: Start difference. First operand has 271 places, 302 transitions, 3914 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:34:38,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 330 transitions, 4752 flow [2024-06-27 22:34:39,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 330 transitions, 4583 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:39,183 INFO L231 Difference]: Finished difference. Result has 273 places, 306 transitions, 3974 flow [2024-06-27 22:34:39,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3745, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3974, PETRI_PLACES=273, PETRI_TRANSITIONS=306} [2024-06-27 22:34:39,184 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 231 predicate places. [2024-06-27 22:34:39,184 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 306 transitions, 3974 flow [2024-06-27 22:34:39,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:39,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:39,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:34:39,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:34:39,184 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:39,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:39,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2070153971, now seen corresponding path program 10 times [2024-06-27 22:34:39,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:39,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424056829] [2024-06-27 22:34:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:39,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:40,055 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 22:34:40,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:40,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424056829] [2024-06-27 22:34:40,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424056829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:40,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:40,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:34:40,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950613437] [2024-06-27 22:34:40,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:40,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:34:40,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:40,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:34:40,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:34:40,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:34:40,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 306 transitions, 3974 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:40,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:40,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:34:40,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:40,648 INFO L124 PetriNetUnfolderBase]: 1024/1988 cut-off events. [2024-06-27 22:34:40,648 INFO L125 PetriNetUnfolderBase]: For 98459/98463 co-relation queries the response was YES. [2024-06-27 22:34:40,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13362 conditions, 1988 events. 1024/1988 cut-off events. For 98459/98463 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 12738 event pairs, 79 based on Foata normal form. 5/1901 useless extension candidates. Maximal degree in co-relation 13226. Up to 1130 conditions per place. [2024-06-27 22:34:40,671 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 189 selfloop transitions, 73 changer transitions 0/341 dead transitions. [2024-06-27 22:34:40,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 341 transitions, 4802 flow [2024-06-27 22:34:40,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-27 22:34:40,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292397660818714 [2024-06-27 22:34:40,672 INFO L175 Difference]: Start difference. First operand has 273 places, 306 transitions, 3974 flow. Second operand 9 states and 181 transitions. [2024-06-27 22:34:40,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 341 transitions, 4802 flow [2024-06-27 22:34:41,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 341 transitions, 4615 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:41,190 INFO L231 Difference]: Finished difference. Result has 274 places, 310 transitions, 4090 flow [2024-06-27 22:34:41,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3787, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4090, PETRI_PLACES=274, PETRI_TRANSITIONS=310} [2024-06-27 22:34:41,191 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 232 predicate places. [2024-06-27 22:34:41,191 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 310 transitions, 4090 flow [2024-06-27 22:34:41,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:41,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:41,191 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 22:34:41,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:34:41,192 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:41,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:41,192 INFO L85 PathProgramCache]: Analyzing trace with hash -16401579, now seen corresponding path program 1 times [2024-06-27 22:34:41,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:41,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694361603] [2024-06-27 22:34:41,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:41,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:42,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:42,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:42,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694361603] [2024-06-27 22:34:42,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694361603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:42,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:42,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:34:42,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732539015] [2024-06-27 22:34:42,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:42,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:34:42,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:42,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:34:42,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:34:42,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:34:42,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 310 transitions, 4090 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:42,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:42,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:34:42,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:43,013 INFO L124 PetriNetUnfolderBase]: 927/1822 cut-off events. [2024-06-27 22:34:43,013 INFO L125 PetriNetUnfolderBase]: For 102648/102658 co-relation queries the response was YES. [2024-06-27 22:34:43,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12858 conditions, 1822 events. 927/1822 cut-off events. For 102648/102658 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11693 event pairs, 263 based on Foata normal form. 2/1697 useless extension candidates. Maximal degree in co-relation 12722. Up to 1527 conditions per place. [2024-06-27 22:34:43,032 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 277 selfloop transitions, 34 changer transitions 0/327 dead transitions. [2024-06-27 22:34:43,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 327 transitions, 4860 flow [2024-06-27 22:34:43,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:34:43,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 22:34:43,034 INFO L175 Difference]: Start difference. First operand has 274 places, 310 transitions, 4090 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:34:43,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 327 transitions, 4860 flow [2024-06-27 22:34:43,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 327 transitions, 4665 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:43,453 INFO L231 Difference]: Finished difference. Result has 277 places, 311 transitions, 4007 flow [2024-06-27 22:34:43,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3897, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4007, PETRI_PLACES=277, PETRI_TRANSITIONS=311} [2024-06-27 22:34:43,453 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-06-27 22:34:43,453 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 311 transitions, 4007 flow [2024-06-27 22:34:43,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:43,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:43,454 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 22:34:43,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:34:43,454 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:43,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:43,454 INFO L85 PathProgramCache]: Analyzing trace with hash -621770641, now seen corresponding path program 11 times [2024-06-27 22:34:43,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:43,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530543361] [2024-06-27 22:34:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:43,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:44,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:44,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530543361] [2024-06-27 22:34:44,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530543361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:44,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:44,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:44,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935493482] [2024-06-27 22:34:44,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:44,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:44,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:44,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:44,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:44,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:44,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 311 transitions, 4007 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:44,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:44,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:44,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:45,516 INFO L124 PetriNetUnfolderBase]: 1127/2134 cut-off events. [2024-06-27 22:34:45,516 INFO L125 PetriNetUnfolderBase]: For 102720/102720 co-relation queries the response was YES. [2024-06-27 22:34:45,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14562 conditions, 2134 events. 1127/2134 cut-off events. For 102720/102720 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 13616 event pairs, 263 based on Foata normal form. 2/2020 useless extension candidates. Maximal degree in co-relation 14425. Up to 1837 conditions per place. [2024-06-27 22:34:45,541 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 280 selfloop transitions, 43 changer transitions 0/333 dead transitions. [2024-06-27 22:34:45,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 333 transitions, 4845 flow [2024-06-27 22:34:45,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:45,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 22:34:45,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 22:34:45,543 INFO L175 Difference]: Start difference. First operand has 277 places, 311 transitions, 4007 flow. Second operand 10 states and 170 transitions. [2024-06-27 22:34:45,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 333 transitions, 4845 flow [2024-06-27 22:34:46,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 333 transitions, 4761 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:46,059 INFO L231 Difference]: Finished difference. Result has 279 places, 317 transitions, 4166 flow [2024-06-27 22:34:46,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3923, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4166, PETRI_PLACES=279, PETRI_TRANSITIONS=317} [2024-06-27 22:34:46,059 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 237 predicate places. [2024-06-27 22:34:46,059 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 317 transitions, 4166 flow [2024-06-27 22:34:46,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:46,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:46,060 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 22:34:46,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:34:46,060 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:46,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash -621948271, now seen corresponding path program 12 times [2024-06-27 22:34:46,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:46,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640066930] [2024-06-27 22:34:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:46,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:47,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:47,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640066930] [2024-06-27 22:34:47,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640066930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:47,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:47,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:47,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037251208] [2024-06-27 22:34:47,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:47,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:47,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:47,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:47,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:47,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:47,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 317 transitions, 4166 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:47,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:47,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:47,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:48,214 INFO L124 PetriNetUnfolderBase]: 1154/2183 cut-off events. [2024-06-27 22:34:48,214 INFO L125 PetriNetUnfolderBase]: For 106456/106456 co-relation queries the response was YES. [2024-06-27 22:34:48,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14959 conditions, 2183 events. 1154/2183 cut-off events. For 106456/106456 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 14016 event pairs, 263 based on Foata normal form. 2/2072 useless extension candidates. Maximal degree in co-relation 14820. Up to 1814 conditions per place. [2024-06-27 22:34:48,239 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 279 selfloop transitions, 52 changer transitions 0/341 dead transitions. [2024-06-27 22:34:48,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 341 transitions, 5032 flow [2024-06-27 22:34:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:48,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:48,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 22:34:48,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2024-06-27 22:34:48,241 INFO L175 Difference]: Start difference. First operand has 279 places, 317 transitions, 4166 flow. Second operand 10 states and 174 transitions. [2024-06-27 22:34:48,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 341 transitions, 5032 flow [2024-06-27 22:34:48,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 341 transitions, 4858 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:48,775 INFO L231 Difference]: Finished difference. Result has 281 places, 323 transitions, 4257 flow [2024-06-27 22:34:48,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3992, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4257, PETRI_PLACES=281, PETRI_TRANSITIONS=323} [2024-06-27 22:34:48,775 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 239 predicate places. [2024-06-27 22:34:48,775 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 323 transitions, 4257 flow [2024-06-27 22:34:48,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:48,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:48,776 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 22:34:48,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:34:48,776 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:48,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:48,776 INFO L85 PathProgramCache]: Analyzing trace with hash -711436591, now seen corresponding path program 13 times [2024-06-27 22:34:48,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:48,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186496516] [2024-06-27 22:34:48,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:48,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:50,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:50,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:50,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186496516] [2024-06-27 22:34:50,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186496516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:50,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:50,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:50,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525143579] [2024-06-27 22:34:50,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:50,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:50,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:50,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:50,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:50,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:50,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 323 transitions, 4257 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:50,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:50,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:50,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:50,853 INFO L124 PetriNetUnfolderBase]: 1187/2243 cut-off events. [2024-06-27 22:34:50,853 INFO L125 PetriNetUnfolderBase]: For 110628/110628 co-relation queries the response was YES. [2024-06-27 22:34:50,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15416 conditions, 2243 events. 1187/2243 cut-off events. For 110628/110628 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 14477 event pairs, 253 based on Foata normal form. 2/2125 useless extension candidates. Maximal degree in co-relation 15276. Up to 1849 conditions per place. [2024-06-27 22:34:50,878 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 294 selfloop transitions, 48 changer transitions 0/352 dead transitions. [2024-06-27 22:34:50,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 352 transitions, 5202 flow [2024-06-27 22:34:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:34:50,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:34:50,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 22:34:50,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 22:34:50,880 INFO L175 Difference]: Start difference. First operand has 281 places, 323 transitions, 4257 flow. Second operand 10 states and 175 transitions. [2024-06-27 22:34:50,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 352 transitions, 5202 flow [2024-06-27 22:34:51,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 352 transitions, 5015 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:51,478 INFO L231 Difference]: Finished difference. Result has 283 places, 331 transitions, 4376 flow [2024-06-27 22:34:51,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4070, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4376, PETRI_PLACES=283, PETRI_TRANSITIONS=331} [2024-06-27 22:34:51,478 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 241 predicate places. [2024-06-27 22:34:51,479 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 331 transitions, 4376 flow [2024-06-27 22:34:51,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:51,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:51,479 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 22:34:51,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:34:51,479 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:51,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:51,480 INFO L85 PathProgramCache]: Analyzing trace with hash 611615501, now seen corresponding path program 14 times [2024-06-27 22:34:51,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:51,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418240956] [2024-06-27 22:34:51,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:51,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:52,779 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 22:34:52,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:52,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418240956] [2024-06-27 22:34:52,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418240956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:52,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:52,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:52,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522690294] [2024-06-27 22:34:52,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:52,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:52,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:52,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:52,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:52,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:52,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 331 transitions, 4376 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:52,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:52,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:52,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:53,553 INFO L124 PetriNetUnfolderBase]: 1207/2281 cut-off events. [2024-06-27 22:34:53,553 INFO L125 PetriNetUnfolderBase]: For 114842/114842 co-relation queries the response was YES. [2024-06-27 22:34:53,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15720 conditions, 2281 events. 1207/2281 cut-off events. For 114842/114842 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 14787 event pairs, 297 based on Foata normal form. 2/2163 useless extension candidates. Maximal degree in co-relation 15579. Up to 1958 conditions per place. [2024-06-27 22:34:53,579 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 284 selfloop transitions, 57 changer transitions 0/351 dead transitions. [2024-06-27 22:34:53,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 351 transitions, 5242 flow [2024-06-27 22:34:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:53,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:34:53,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-06-27 22:34:53,580 INFO L175 Difference]: Start difference. First operand has 283 places, 331 transitions, 4376 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:34:53,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 351 transitions, 5242 flow [2024-06-27 22:34:54,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 351 transitions, 5034 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-27 22:34:54,114 INFO L231 Difference]: Finished difference. Result has 284 places, 335 transitions, 4422 flow [2024-06-27 22:34:54,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4422, PETRI_PLACES=284, PETRI_TRANSITIONS=335} [2024-06-27 22:34:54,114 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 242 predicate places. [2024-06-27 22:34:54,115 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 335 transitions, 4422 flow [2024-06-27 22:34:54,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:54,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:54,115 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 22:34:54,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:34:54,115 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:54,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:54,116 INFO L85 PathProgramCache]: Analyzing trace with hash 383714351, now seen corresponding path program 15 times [2024-06-27 22:34:54,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:54,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854796399] [2024-06-27 22:34:54,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:54,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:34:55,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:55,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854796399] [2024-06-27 22:34:55,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854796399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:55,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:55,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:55,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359257995] [2024-06-27 22:34:55,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:55,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:55,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:55,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:55,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:55,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:55,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 335 transitions, 4422 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:55,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:55,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:55,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:56,302 INFO L124 PetriNetUnfolderBase]: 1227/2318 cut-off events. [2024-06-27 22:34:56,303 INFO L125 PetriNetUnfolderBase]: For 117924/117924 co-relation queries the response was YES. [2024-06-27 22:34:56,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15920 conditions, 2318 events. 1227/2318 cut-off events. For 117924/117924 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 15099 event pairs, 305 based on Foata normal form. 2/2199 useless extension candidates. Maximal degree in co-relation 15778. Up to 1994 conditions per place. [2024-06-27 22:34:56,330 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 291 selfloop transitions, 54 changer transitions 0/355 dead transitions. [2024-06-27 22:34:56,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 355 transitions, 5300 flow [2024-06-27 22:34:56,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:56,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:56,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:34:56,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:34:56,332 INFO L175 Difference]: Start difference. First operand has 284 places, 335 transitions, 4422 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:34:56,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 355 transitions, 5300 flow [2024-06-27 22:34:57,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 355 transitions, 5084 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:57,016 INFO L231 Difference]: Finished difference. Result has 286 places, 339 transitions, 4458 flow [2024-06-27 22:34:57,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4206, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4458, PETRI_PLACES=286, PETRI_TRANSITIONS=339} [2024-06-27 22:34:57,016 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 244 predicate places. [2024-06-27 22:34:57,016 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 339 transitions, 4458 flow [2024-06-27 22:34:57,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:57,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:57,017 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 22:34:57,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:34:57,017 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:57,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:57,017 INFO L85 PathProgramCache]: Analyzing trace with hash 383536721, now seen corresponding path program 16 times [2024-06-27 22:34:57,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:57,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961906345] [2024-06-27 22:34:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:57,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:34:58,397 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 22:34:58,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:34:58,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961906345] [2024-06-27 22:34:58,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961906345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:34:58,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:34:58,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:34:58,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162424581] [2024-06-27 22:34:58,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:34:58,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:34:58,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:34:58,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:34:58,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:34:58,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:34:58,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 339 transitions, 4458 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:58,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:34:58,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:34:58,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:34:59,224 INFO L124 PetriNetUnfolderBase]: 1247/2355 cut-off events. [2024-06-27 22:34:59,225 INFO L125 PetriNetUnfolderBase]: For 121523/121523 co-relation queries the response was YES. [2024-06-27 22:34:59,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16140 conditions, 2355 events. 1247/2355 cut-off events. For 121523/121523 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 15413 event pairs, 299 based on Foata normal form. 2/2239 useless extension candidates. Maximal degree in co-relation 15997. Up to 1954 conditions per place. [2024-06-27 22:34:59,248 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 287 selfloop transitions, 64 changer transitions 0/361 dead transitions. [2024-06-27 22:34:59,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 361 transitions, 5360 flow [2024-06-27 22:34:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:34:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:34:59,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:34:59,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 22:34:59,250 INFO L175 Difference]: Start difference. First operand has 286 places, 339 transitions, 4458 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:34:59,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 361 transitions, 5360 flow [2024-06-27 22:34:59,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 361 transitions, 5146 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-27 22:34:59,832 INFO L231 Difference]: Finished difference. Result has 288 places, 343 transitions, 4520 flow [2024-06-27 22:34:59,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4244, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4520, PETRI_PLACES=288, PETRI_TRANSITIONS=343} [2024-06-27 22:34:59,833 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-27 22:34:59,833 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 343 transitions, 4520 flow [2024-06-27 22:34:59,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:34:59,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:34:59,833 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 22:34:59,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 22:34:59,833 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:34:59,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:34:59,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1060510037, now seen corresponding path program 17 times [2024-06-27 22:34:59,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:34:59,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010902874] [2024-06-27 22:34:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:34:59,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:34:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:01,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:01,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010902874] [2024-06-27 22:35:01,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010902874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:01,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:01,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:01,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923103976] [2024-06-27 22:35:01,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:01,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:01,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:01,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:01,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:01,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:35:01,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 343 transitions, 4520 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:01,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:01,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:35:01,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:01,828 INFO L124 PetriNetUnfolderBase]: 1260/2377 cut-off events. [2024-06-27 22:35:01,829 INFO L125 PetriNetUnfolderBase]: For 125391/125391 co-relation queries the response was YES. [2024-06-27 22:35:01,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16381 conditions, 2377 events. 1260/2377 cut-off events. For 125391/125391 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 15599 event pairs, 316 based on Foata normal form. 2/2254 useless extension candidates. Maximal degree in co-relation 16237. Up to 1968 conditions per place. [2024-06-27 22:35:01,857 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 264 selfloop transitions, 87 changer transitions 0/361 dead transitions. [2024-06-27 22:35:01,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 361 transitions, 5412 flow [2024-06-27 22:35:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:35:01,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-06-27 22:35:01,858 INFO L175 Difference]: Start difference. First operand has 288 places, 343 transitions, 4520 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:35:01,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 361 transitions, 5412 flow [2024-06-27 22:35:02,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 361 transitions, 5174 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:02,548 INFO L231 Difference]: Finished difference. Result has 290 places, 345 transitions, 4593 flow [2024-06-27 22:35:02,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4282, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4593, PETRI_PLACES=290, PETRI_TRANSITIONS=345} [2024-06-27 22:35:02,549 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 248 predicate places. [2024-06-27 22:35:02,549 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 345 transitions, 4593 flow [2024-06-27 22:35:02,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:02,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:02,549 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 22:35:02,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 22:35:02,550 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:02,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:02,550 INFO L85 PathProgramCache]: Analyzing trace with hash -163578163, now seen corresponding path program 18 times [2024-06-27 22:35:02,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:02,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851695071] [2024-06-27 22:35:02,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:02,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:03,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:03,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851695071] [2024-06-27 22:35:03,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851695071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:03,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:03,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:03,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763031968] [2024-06-27 22:35:03,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:03,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:03,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:03,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:04,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:35:04,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 345 transitions, 4593 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:04,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:04,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:35:04,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:04,749 INFO L124 PetriNetUnfolderBase]: 1273/2398 cut-off events. [2024-06-27 22:35:04,749 INFO L125 PetriNetUnfolderBase]: For 129317/129317 co-relation queries the response was YES. [2024-06-27 22:35:04,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16598 conditions, 2398 events. 1273/2398 cut-off events. For 129317/129317 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 15707 event pairs, 317 based on Foata normal form. 2/2274 useless extension candidates. Maximal degree in co-relation 16453. Up to 1991 conditions per place. [2024-06-27 22:35:04,779 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 278 selfloop transitions, 75 changer transitions 0/363 dead transitions. [2024-06-27 22:35:04,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 363 transitions, 5493 flow [2024-06-27 22:35:04,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:35:04,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 22:35:04,780 INFO L175 Difference]: Start difference. First operand has 290 places, 345 transitions, 4593 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:35:04,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 363 transitions, 5493 flow [2024-06-27 22:35:05,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 363 transitions, 5198 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:05,563 INFO L231 Difference]: Finished difference. Result has 292 places, 347 transitions, 4589 flow [2024-06-27 22:35:05,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4298, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4589, PETRI_PLACES=292, PETRI_TRANSITIONS=347} [2024-06-27 22:35:05,564 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 250 predicate places. [2024-06-27 22:35:05,564 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 347 transitions, 4589 flow [2024-06-27 22:35:05,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:05,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:05,565 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 22:35:05,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 22:35:05,565 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:05,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:05,565 INFO L85 PathProgramCache]: Analyzing trace with hash -391479313, now seen corresponding path program 19 times [2024-06-27 22:35:05,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:05,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795175100] [2024-06-27 22:35:05,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:05,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:07,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:07,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795175100] [2024-06-27 22:35:07,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795175100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:07,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:07,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:07,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110207969] [2024-06-27 22:35:07,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:07,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:07,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:07,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:07,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:07,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:35:07,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 347 transitions, 4589 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:07,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:07,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:35:07,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:07,933 INFO L124 PetriNetUnfolderBase]: 1286/2424 cut-off events. [2024-06-27 22:35:07,933 INFO L125 PetriNetUnfolderBase]: For 133016/133016 co-relation queries the response was YES. [2024-06-27 22:35:07,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16726 conditions, 2424 events. 1286/2424 cut-off events. For 133016/133016 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 15957 event pairs, 324 based on Foata normal form. 2/2300 useless extension candidates. Maximal degree in co-relation 16580. Up to 2014 conditions per place. [2024-06-27 22:35:07,962 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 279 selfloop transitions, 76 changer transitions 0/365 dead transitions. [2024-06-27 22:35:07,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 365 transitions, 5497 flow [2024-06-27 22:35:07,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:07,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:07,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 22:35:07,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:35:07,973 INFO L175 Difference]: Start difference. First operand has 292 places, 347 transitions, 4589 flow. Second operand 9 states and 162 transitions. [2024-06-27 22:35:07,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 365 transitions, 5497 flow [2024-06-27 22:35:08,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 365 transitions, 5222 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:08,724 INFO L231 Difference]: Finished difference. Result has 294 places, 349 transitions, 4611 flow [2024-06-27 22:35:08,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4314, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4611, PETRI_PLACES=294, PETRI_TRANSITIONS=349} [2024-06-27 22:35:08,725 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-27 22:35:08,725 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 349 transitions, 4611 flow [2024-06-27 22:35:08,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:08,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:08,726 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 22:35:08,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 22:35:08,726 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:08,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash -391656943, now seen corresponding path program 20 times [2024-06-27 22:35:08,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:08,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389364104] [2024-06-27 22:35:08,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:08,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:10,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:10,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389364104] [2024-06-27 22:35:10,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389364104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:10,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:10,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:10,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559377941] [2024-06-27 22:35:10,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:10,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:10,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:10,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:10,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:10,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:35:10,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 349 transitions, 4611 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:10,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:10,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:35:10,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:10,916 INFO L124 PetriNetUnfolderBase]: 1283/2420 cut-off events. [2024-06-27 22:35:10,916 INFO L125 PetriNetUnfolderBase]: For 123626/123626 co-relation queries the response was YES. [2024-06-27 22:35:10,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16254 conditions, 2420 events. 1283/2420 cut-off events. For 123626/123626 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 15914 event pairs, 310 based on Foata normal form. 2/2298 useless extension candidates. Maximal degree in co-relation 16107. Up to 1943 conditions per place. [2024-06-27 22:35:10,947 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 276 selfloop transitions, 83 changer transitions 0/369 dead transitions. [2024-06-27 22:35:10,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 369 transitions, 5539 flow [2024-06-27 22:35:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:10,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:10,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:35:10,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 22:35:10,949 INFO L175 Difference]: Start difference. First operand has 294 places, 349 transitions, 4611 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:35:10,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 369 transitions, 5539 flow [2024-06-27 22:35:11,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 369 transitions, 5258 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:11,539 INFO L231 Difference]: Finished difference. Result has 296 places, 351 transitions, 4645 flow [2024-06-27 22:35:11,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4330, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4645, PETRI_PLACES=296, PETRI_TRANSITIONS=351} [2024-06-27 22:35:11,540 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-06-27 22:35:11,540 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 351 transitions, 4645 flow [2024-06-27 22:35:11,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:11,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:11,541 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 22:35:11,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 22:35:11,541 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:11,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:11,541 INFO L85 PathProgramCache]: Analyzing trace with hash 92640355, now seen corresponding path program 6 times [2024-06-27 22:35:11,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:11,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685050561] [2024-06-27 22:35:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:11,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:12,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:12,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685050561] [2024-06-27 22:35:12,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685050561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:12,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:12,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:12,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722048058] [2024-06-27 22:35:12,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:12,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:12,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:12,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:12,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:12,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:35:12,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 351 transitions, 4645 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:12,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:12,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:35:12,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:13,603 INFO L124 PetriNetUnfolderBase]: 1289/2439 cut-off events. [2024-06-27 22:35:13,604 INFO L125 PetriNetUnfolderBase]: For 117487/117487 co-relation queries the response was YES. [2024-06-27 22:35:13,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16157 conditions, 2439 events. 1289/2439 cut-off events. For 117487/117487 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 16053 event pairs, 457 based on Foata normal form. 1/2315 useless extension candidates. Maximal degree in co-relation 16009. Up to 2175 conditions per place. [2024-06-27 22:35:13,629 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 341 selfloop transitions, 18 changer transitions 0/369 dead transitions. [2024-06-27 22:35:13,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 369 transitions, 5473 flow [2024-06-27 22:35:13,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:13,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:35:13,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-06-27 22:35:13,630 INFO L175 Difference]: Start difference. First operand has 296 places, 351 transitions, 4645 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:35:13,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 369 transitions, 5473 flow [2024-06-27 22:35:14,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 369 transitions, 5174 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:14,329 INFO L231 Difference]: Finished difference. Result has 299 places, 353 transitions, 4439 flow [2024-06-27 22:35:14,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4346, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4439, PETRI_PLACES=299, PETRI_TRANSITIONS=353} [2024-06-27 22:35:14,330 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 257 predicate places. [2024-06-27 22:35:14,330 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 353 transitions, 4439 flow [2024-06-27 22:35:14,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:14,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:14,330 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 22:35:14,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 22:35:14,330 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:14,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:14,331 INFO L85 PathProgramCache]: Analyzing trace with hash 996150871, now seen corresponding path program 7 times [2024-06-27 22:35:14,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:14,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101785147] [2024-06-27 22:35:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:14,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:15,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:15,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101785147] [2024-06-27 22:35:15,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101785147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:15,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:15,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:15,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004352134] [2024-06-27 22:35:15,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:15,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:15,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:15,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:15,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:15,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:35:15,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 353 transitions, 4439 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:15,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:15,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:35:15,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:16,099 INFO L124 PetriNetUnfolderBase]: 1071/2080 cut-off events. [2024-06-27 22:35:16,099 INFO L125 PetriNetUnfolderBase]: For 117309/117318 co-relation queries the response was YES. [2024-06-27 22:35:16,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13966 conditions, 2080 events. 1071/2080 cut-off events. For 117309/117318 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 13858 event pairs, 309 based on Foata normal form. 7/1939 useless extension candidates. Maximal degree in co-relation 13817. Up to 1585 conditions per place. [2024-06-27 22:35:16,125 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 226 selfloop transitions, 129 changer transitions 0/370 dead transitions. [2024-06-27 22:35:16,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 370 transitions, 5713 flow [2024-06-27 22:35:16,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:16,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:16,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:35:16,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-27 22:35:16,126 INFO L175 Difference]: Start difference. First operand has 299 places, 353 transitions, 4439 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:35:16,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 370 transitions, 5713 flow [2024-06-27 22:35:16,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 370 transitions, 5640 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:16,942 INFO L231 Difference]: Finished difference. Result has 300 places, 359 transitions, 4789 flow [2024-06-27 22:35:16,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4366, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4789, PETRI_PLACES=300, PETRI_TRANSITIONS=359} [2024-06-27 22:35:16,948 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 258 predicate places. [2024-06-27 22:35:16,948 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 359 transitions, 4789 flow [2024-06-27 22:35:16,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:16,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:16,948 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 22:35:16,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 22:35:16,949 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:16,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:16,949 INFO L85 PathProgramCache]: Analyzing trace with hash 82512655, now seen corresponding path program 8 times [2024-06-27 22:35:16,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:16,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020892642] [2024-06-27 22:35:16,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:16,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:18,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:18,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020892642] [2024-06-27 22:35:18,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020892642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:18,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:18,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:18,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710057957] [2024-06-27 22:35:18,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:18,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:18,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:18,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:18,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:18,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:35:18,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 359 transitions, 4789 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:18,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:18,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:35:18,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:18,734 INFO L124 PetriNetUnfolderBase]: 1069/2075 cut-off events. [2024-06-27 22:35:18,734 INFO L125 PetriNetUnfolderBase]: For 114674/114683 co-relation queries the response was YES. [2024-06-27 22:35:18,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14103 conditions, 2075 events. 1069/2075 cut-off events. For 114674/114683 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 13812 event pairs, 309 based on Foata normal form. 7/1933 useless extension candidates. Maximal degree in co-relation 13955. Up to 1583 conditions per place. [2024-06-27 22:35:18,760 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 223 selfloop transitions, 130 changer transitions 0/369 dead transitions. [2024-06-27 22:35:18,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 369 transitions, 5711 flow [2024-06-27 22:35:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:18,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 22:35:18,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116959064327485 [2024-06-27 22:35:18,763 INFO L175 Difference]: Start difference. First operand has 300 places, 359 transitions, 4789 flow. Second operand 9 states and 175 transitions. [2024-06-27 22:35:18,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 369 transitions, 5711 flow [2024-06-27 22:35:19,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 369 transitions, 5505 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-27 22:35:19,548 INFO L231 Difference]: Finished difference. Result has 305 places, 359 transitions, 4848 flow [2024-06-27 22:35:19,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4583, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4848, PETRI_PLACES=305, PETRI_TRANSITIONS=359} [2024-06-27 22:35:19,548 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 263 predicate places. [2024-06-27 22:35:19,548 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 359 transitions, 4848 flow [2024-06-27 22:35:19,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:19,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:19,549 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 22:35:19,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 22:35:19,549 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:19,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:19,549 INFO L85 PathProgramCache]: Analyzing trace with hash -163571219, now seen corresponding path program 9 times [2024-06-27 22:35:19,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:19,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206226158] [2024-06-27 22:35:19,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:19,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:20,746 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 22:35:20,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:20,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206226158] [2024-06-27 22:35:20,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206226158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:20,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:20,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:20,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836848760] [2024-06-27 22:35:20,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:20,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:20,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:20,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:20,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:20,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:35:20,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 359 transitions, 4848 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:20,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:20,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:35:20,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:21,493 INFO L124 PetriNetUnfolderBase]: 1085/2110 cut-off events. [2024-06-27 22:35:21,493 INFO L125 PetriNetUnfolderBase]: For 125764/125773 co-relation queries the response was YES. [2024-06-27 22:35:21,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14758 conditions, 2110 events. 1085/2110 cut-off events. For 125764/125773 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 14103 event pairs, 318 based on Foata normal form. 3/1962 useless extension candidates. Maximal degree in co-relation 14608. Up to 1602 conditions per place. [2024-06-27 22:35:21,519 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 256 selfloop transitions, 105 changer transitions 0/377 dead transitions. [2024-06-27 22:35:21,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 377 transitions, 6352 flow [2024-06-27 22:35:21,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-27 22:35:21,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321637426900585 [2024-06-27 22:35:21,520 INFO L175 Difference]: Start difference. First operand has 305 places, 359 transitions, 4848 flow. Second operand 9 states and 182 transitions. [2024-06-27 22:35:21,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 377 transitions, 6352 flow [2024-06-27 22:35:22,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 377 transitions, 6075 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:22,238 INFO L231 Difference]: Finished difference. Result has 306 places, 365 transitions, 4954 flow [2024-06-27 22:35:22,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4583, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4954, PETRI_PLACES=306, PETRI_TRANSITIONS=365} [2024-06-27 22:35:22,241 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-27 22:35:22,241 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 365 transitions, 4954 flow [2024-06-27 22:35:22,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:22,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:22,241 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 22:35:22,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 22:35:22,241 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:22,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:22,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1051932213, now seen corresponding path program 10 times [2024-06-27 22:35:22,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:22,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269755684] [2024-06-27 22:35:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:22,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:23,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:23,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269755684] [2024-06-27 22:35:23,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269755684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:23,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:23,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:23,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938683376] [2024-06-27 22:35:23,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:23,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:23,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:23,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:23,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:23,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:35:23,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 365 transitions, 4954 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:23,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:23,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:35:23,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:24,192 INFO L124 PetriNetUnfolderBase]: 1089/2109 cut-off events. [2024-06-27 22:35:24,192 INFO L125 PetriNetUnfolderBase]: For 129113/129122 co-relation queries the response was YES. [2024-06-27 22:35:24,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14804 conditions, 2109 events. 1089/2109 cut-off events. For 129113/129122 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 14034 event pairs, 309 based on Foata normal form. 7/1964 useless extension candidates. Maximal degree in co-relation 14652. Up to 1607 conditions per place. [2024-06-27 22:35:24,219 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 243 selfloop transitions, 120 changer transitions 0/378 dead transitions. [2024-06-27 22:35:24,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 378 transitions, 6156 flow [2024-06-27 22:35:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 22:35:24,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-27 22:35:24,221 INFO L175 Difference]: Start difference. First operand has 306 places, 365 transitions, 4954 flow. Second operand 9 states and 170 transitions. [2024-06-27 22:35:24,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 378 transitions, 6156 flow [2024-06-27 22:35:24,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 378 transitions, 5871 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 22:35:24,947 INFO L231 Difference]: Finished difference. Result has 310 places, 367 transitions, 4970 flow [2024-06-27 22:35:24,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4675, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4970, PETRI_PLACES=310, PETRI_TRANSITIONS=367} [2024-06-27 22:35:24,948 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 268 predicate places. [2024-06-27 22:35:24,948 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 367 transitions, 4970 flow [2024-06-27 22:35:24,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:24,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:24,948 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 22:35:24,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 22:35:24,949 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:24,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1052228883, now seen corresponding path program 11 times [2024-06-27 22:35:24,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:24,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157658626] [2024-06-27 22:35:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:24,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:26,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:26,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157658626] [2024-06-27 22:35:26,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157658626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:26,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:26,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:26,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375314262] [2024-06-27 22:35:26,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:26,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:26,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:26,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:26,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:26,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:35:26,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 367 transitions, 4970 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:26,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:26,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:35:26,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:26,709 INFO L124 PetriNetUnfolderBase]: 1093/2115 cut-off events. [2024-06-27 22:35:26,709 INFO L125 PetriNetUnfolderBase]: For 130973/130982 co-relation queries the response was YES. [2024-06-27 22:35:26,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14697 conditions, 2115 events. 1093/2115 cut-off events. For 130973/130982 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 14075 event pairs, 309 based on Foata normal form. 7/1968 useless extension candidates. Maximal degree in co-relation 14546. Up to 1612 conditions per place. [2024-06-27 22:35:26,733 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 243 selfloop transitions, 121 changer transitions 0/380 dead transitions. [2024-06-27 22:35:26,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 380 transitions, 6176 flow [2024-06-27 22:35:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:26,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-27 22:35:26,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233918128654971 [2024-06-27 22:35:26,734 INFO L175 Difference]: Start difference. First operand has 310 places, 367 transitions, 4970 flow. Second operand 9 states and 179 transitions. [2024-06-27 22:35:26,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 380 transitions, 6176 flow [2024-06-27 22:35:27,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 380 transitions, 5874 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:27,447 INFO L231 Difference]: Finished difference. Result has 312 places, 369 transitions, 4969 flow [2024-06-27 22:35:27,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4676, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4969, PETRI_PLACES=312, PETRI_TRANSITIONS=369} [2024-06-27 22:35:27,448 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 270 predicate places. [2024-06-27 22:35:27,448 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 369 transitions, 4969 flow [2024-06-27 22:35:27,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:27,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:27,448 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 22:35:27,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 22:35:27,448 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:27,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:27,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1060503093, now seen corresponding path program 12 times [2024-06-27 22:35:27,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:27,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783814469] [2024-06-27 22:35:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:27,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:28,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:28,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:28,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783814469] [2024-06-27 22:35:28,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783814469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:28,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:28,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:28,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939351847] [2024-06-27 22:35:28,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:28,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:28,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:28,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:28,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:28,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:35:28,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 369 transitions, 4969 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:28,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:28,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:35:28,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:29,319 INFO L124 PetriNetUnfolderBase]: 1091/2119 cut-off events. [2024-06-27 22:35:29,319 INFO L125 PetriNetUnfolderBase]: For 126120/126129 co-relation queries the response was YES. [2024-06-27 22:35:29,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14533 conditions, 2119 events. 1091/2119 cut-off events. For 126120/126129 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 14130 event pairs, 318 based on Foata normal form. 7/1973 useless extension candidates. Maximal degree in co-relation 14381. Up to 1610 conditions per place. [2024-06-27 22:35:29,345 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 239 selfloop transitions, 124 changer transitions 0/379 dead transitions. [2024-06-27 22:35:29,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 379 transitions, 5919 flow [2024-06-27 22:35:29,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 22:35:29,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146198830409356 [2024-06-27 22:35:29,346 INFO L175 Difference]: Start difference. First operand has 312 places, 369 transitions, 4969 flow. Second operand 9 states and 176 transitions. [2024-06-27 22:35:29,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 379 transitions, 5919 flow [2024-06-27 22:35:30,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 379 transitions, 5626 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 22:35:30,020 INFO L231 Difference]: Finished difference. Result has 315 places, 369 transitions, 4929 flow [2024-06-27 22:35:30,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4676, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4929, PETRI_PLACES=315, PETRI_TRANSITIONS=369} [2024-06-27 22:35:30,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 273 predicate places. [2024-06-27 22:35:30,021 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 369 transitions, 4929 flow [2024-06-27 22:35:30,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:30,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:30,021 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 22:35:30,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 22:35:30,021 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:30,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:30,021 INFO L85 PathProgramCache]: Analyzing trace with hash -155000339, now seen corresponding path program 13 times [2024-06-27 22:35:30,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:30,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553103983] [2024-06-27 22:35:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:30,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:31,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553103983] [2024-06-27 22:35:31,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553103983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:31,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:31,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:31,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478065735] [2024-06-27 22:35:31,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:31,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:31,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:31,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:31,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:31,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:35:31,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 369 transitions, 4929 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:31,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:31,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:35:31,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:31,775 INFO L124 PetriNetUnfolderBase]: 1095/2118 cut-off events. [2024-06-27 22:35:31,775 INFO L125 PetriNetUnfolderBase]: For 128585/128594 co-relation queries the response was YES. [2024-06-27 22:35:31,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14551 conditions, 2118 events. 1095/2118 cut-off events. For 128585/128594 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 14085 event pairs, 309 based on Foata normal form. 3/1967 useless extension candidates. Maximal degree in co-relation 14397. Up to 1615 conditions per place. [2024-06-27 22:35:31,801 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 252 selfloop transitions, 114 changer transitions 0/381 dead transitions. [2024-06-27 22:35:31,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 381 transitions, 5937 flow [2024-06-27 22:35:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 22:35:31,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-27 22:35:31,802 INFO L175 Difference]: Start difference. First operand has 315 places, 369 transitions, 4929 flow. Second operand 9 states and 170 transitions. [2024-06-27 22:35:31,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 381 transitions, 5937 flow [2024-06-27 22:35:32,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 381 transitions, 5669 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:35:32,489 INFO L231 Difference]: Finished difference. Result has 315 places, 371 transitions, 4944 flow [2024-06-27 22:35:32,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4665, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4944, PETRI_PLACES=315, PETRI_TRANSITIONS=371} [2024-06-27 22:35:32,489 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 273 predicate places. [2024-06-27 22:35:32,489 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 371 transitions, 4944 flow [2024-06-27 22:35:32,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:32,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:32,490 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 22:35:32,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 22:35:32,490 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:32,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:32,492 INFO L85 PathProgramCache]: Analyzing trace with hash -155297009, now seen corresponding path program 14 times [2024-06-27 22:35:32,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:32,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343310877] [2024-06-27 22:35:32,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:32,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:33,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:33,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343310877] [2024-06-27 22:35:33,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343310877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:33,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:33,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:33,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341588953] [2024-06-27 22:35:33,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:33,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:33,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:33,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:35:33,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 371 transitions, 4944 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:33,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:33,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:35:33,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:34,311 INFO L124 PetriNetUnfolderBase]: 1093/2122 cut-off events. [2024-06-27 22:35:34,312 INFO L125 PetriNetUnfolderBase]: For 124159/124168 co-relation queries the response was YES. [2024-06-27 22:35:34,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14419 conditions, 2122 events. 1093/2122 cut-off events. For 124159/124168 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 14138 event pairs, 318 based on Foata normal form. 3/1971 useless extension candidates. Maximal degree in co-relation 14265. Up to 1613 conditions per place. [2024-06-27 22:35:34,339 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 253 selfloop transitions, 112 changer transitions 0/381 dead transitions. [2024-06-27 22:35:34,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 381 transitions, 5902 flow [2024-06-27 22:35:34,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-27 22:35:34,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233918128654971 [2024-06-27 22:35:34,340 INFO L175 Difference]: Start difference. First operand has 315 places, 371 transitions, 4944 flow. Second operand 9 states and 179 transitions. [2024-06-27 22:35:34,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 381 transitions, 5902 flow [2024-06-27 22:35:35,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 381 transitions, 5550 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:35,070 INFO L231 Difference]: Finished difference. Result has 317 places, 371 transitions, 4821 flow [2024-06-27 22:35:35,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4592, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4821, PETRI_PLACES=317, PETRI_TRANSITIONS=371} [2024-06-27 22:35:35,071 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-06-27 22:35:35,071 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 371 transitions, 4821 flow [2024-06-27 22:35:35,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:35,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:35,071 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 22:35:35,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 22:35:35,071 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:35,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:35,072 INFO L85 PathProgramCache]: Analyzing trace with hash -391472369, now seen corresponding path program 15 times [2024-06-27 22:35:35,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:35,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964722959] [2024-06-27 22:35:35,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:35,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:36,260 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 22:35:36,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:36,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964722959] [2024-06-27 22:35:36,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964722959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:36,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:36,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:35:36,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396943735] [2024-06-27 22:35:36,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:36,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:35:36,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:36,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:35:36,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:35:36,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:35:36,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 371 transitions, 4821 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:36,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:36,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:35:36,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:36,981 INFO L124 PetriNetUnfolderBase]: 1091/2112 cut-off events. [2024-06-27 22:35:36,982 INFO L125 PetriNetUnfolderBase]: For 120239/120248 co-relation queries the response was YES. [2024-06-27 22:35:37,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14177 conditions, 2112 events. 1091/2112 cut-off events. For 120239/120248 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 14040 event pairs, 309 based on Foata normal form. 3/1960 useless extension candidates. Maximal degree in co-relation 14022. Up to 1611 conditions per place. [2024-06-27 22:35:37,005 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 247 selfloop transitions, 117 changer transitions 0/380 dead transitions. [2024-06-27 22:35:37,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 380 transitions, 5569 flow [2024-06-27 22:35:37,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 22:35:37,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146198830409356 [2024-06-27 22:35:37,007 INFO L175 Difference]: Start difference. First operand has 317 places, 371 transitions, 4821 flow. Second operand 9 states and 176 transitions. [2024-06-27 22:35:37,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 380 transitions, 5569 flow [2024-06-27 22:35:37,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 380 transitions, 5320 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 22:35:37,683 INFO L231 Difference]: Finished difference. Result has 319 places, 371 transitions, 4811 flow [2024-06-27 22:35:37,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4572, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4811, PETRI_PLACES=319, PETRI_TRANSITIONS=371} [2024-06-27 22:35:37,683 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2024-06-27 22:35:37,683 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 371 transitions, 4811 flow [2024-06-27 22:35:37,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:37,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:37,684 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 22:35:37,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 22:35:37,684 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:37,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:37,684 INFO L85 PathProgramCache]: Analyzing trace with hash 425118827, now seen corresponding path program 2 times [2024-06-27 22:35:37,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:37,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437508254] [2024-06-27 22:35:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:37,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:39,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:39,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437508254] [2024-06-27 22:35:39,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437508254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:39,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:39,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:35:39,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426711086] [2024-06-27 22:35:39,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:39,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:35:39,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:39,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:35:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:35:39,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:35:39,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 371 transitions, 4811 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:39,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:39,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:35:39,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:40,431 INFO L124 PetriNetUnfolderBase]: 1348/2535 cut-off events. [2024-06-27 22:35:40,431 INFO L125 PetriNetUnfolderBase]: For 131998/131998 co-relation queries the response was YES. [2024-06-27 22:35:40,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16664 conditions, 2535 events. 1348/2535 cut-off events. For 131998/131998 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 16870 event pairs, 463 based on Foata normal form. 2/2405 useless extension candidates. Maximal degree in co-relation 16507. Up to 2252 conditions per place. [2024-06-27 22:35:40,463 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 363 selfloop transitions, 20 changer transitions 0/393 dead transitions. [2024-06-27 22:35:40,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 393 transitions, 5785 flow [2024-06-27 22:35:40,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:35:40,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:35:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:35:40,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-06-27 22:35:40,465 INFO L175 Difference]: Start difference. First operand has 319 places, 371 transitions, 4811 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:35:40,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 393 transitions, 5785 flow [2024-06-27 22:35:41,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 393 transitions, 5518 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 22:35:41,363 INFO L231 Difference]: Finished difference. Result has 320 places, 373 transitions, 4723 flow [2024-06-27 22:35:41,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4544, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4723, PETRI_PLACES=320, PETRI_TRANSITIONS=373} [2024-06-27 22:35:41,363 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 278 predicate places. [2024-06-27 22:35:41,363 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 373 transitions, 4723 flow [2024-06-27 22:35:41,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:41,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:41,364 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 22:35:41,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 22:35:41,364 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:41,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:41,364 INFO L85 PathProgramCache]: Analyzing trace with hash 437498987, now seen corresponding path program 3 times [2024-06-27 22:35:41,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:41,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458360679] [2024-06-27 22:35:41,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:41,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:43,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:43,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:43,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458360679] [2024-06-27 22:35:43,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458360679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:43,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:43,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:35:43,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263084849] [2024-06-27 22:35:43,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:43,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:35:43,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:43,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:35:43,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:35:43,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:35:43,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 373 transitions, 4723 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:43,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:43,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:35:43,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:44,216 INFO L124 PetriNetUnfolderBase]: 1385/2620 cut-off events. [2024-06-27 22:35:44,216 INFO L125 PetriNetUnfolderBase]: For 154053/154053 co-relation queries the response was YES. [2024-06-27 22:35:44,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17524 conditions, 2620 events. 1385/2620 cut-off events. For 154053/154053 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 17556 event pairs, 462 based on Foata normal form. 2/2488 useless extension candidates. Maximal degree in co-relation 17365. Up to 2231 conditions per place. [2024-06-27 22:35:44,249 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 369 selfloop transitions, 25 changer transitions 0/404 dead transitions. [2024-06-27 22:35:44,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 404 transitions, 6091 flow [2024-06-27 22:35:44,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:35:44,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:35:44,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-27 22:35:44,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 22:35:44,250 INFO L175 Difference]: Start difference. First operand has 320 places, 373 transitions, 4723 flow. Second operand 12 states and 204 transitions. [2024-06-27 22:35:44,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 404 transitions, 6091 flow [2024-06-27 22:35:45,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 404 transitions, 5928 flow, removed 63 selfloop flow, removed 9 redundant places. [2024-06-27 22:35:45,318 INFO L231 Difference]: Finished difference. Result has 323 places, 375 transitions, 4696 flow [2024-06-27 22:35:45,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4560, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4696, PETRI_PLACES=323, PETRI_TRANSITIONS=375} [2024-06-27 22:35:45,319 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 281 predicate places. [2024-06-27 22:35:45,319 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 375 transitions, 4696 flow [2024-06-27 22:35:45,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:45,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:45,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:45,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 22:35:45,319 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:45,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:45,320 INFO L85 PathProgramCache]: Analyzing trace with hash -154989427, now seen corresponding path program 4 times [2024-06-27 22:35:45,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:45,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118215301] [2024-06-27 22:35:45,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:45,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:46,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:46,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118215301] [2024-06-27 22:35:46,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118215301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:46,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:46,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:35:46,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31490260] [2024-06-27 22:35:46,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:46,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:35:46,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:46,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:35:46,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:35:46,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:35:46,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 375 transitions, 4696 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:46,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:46,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:35:46,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:47,469 INFO L124 PetriNetUnfolderBase]: 1142/2235 cut-off events. [2024-06-27 22:35:47,470 INFO L125 PetriNetUnfolderBase]: For 154762/154772 co-relation queries the response was YES. [2024-06-27 22:35:47,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15432 conditions, 2235 events. 1142/2235 cut-off events. For 154762/154772 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 15141 event pairs, 339 based on Foata normal form. 2/2079 useless extension candidates. Maximal degree in co-relation 15272. Up to 1881 conditions per place. [2024-06-27 22:35:47,498 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 328 selfloop transitions, 46 changer transitions 0/389 dead transitions. [2024-06-27 22:35:47,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 389 transitions, 5610 flow [2024-06-27 22:35:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:47,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:47,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:35:47,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:35:47,500 INFO L175 Difference]: Start difference. First operand has 323 places, 375 transitions, 4696 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:35:47,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 389 transitions, 5610 flow [2024-06-27 22:35:48,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 389 transitions, 5556 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:48,280 INFO L231 Difference]: Finished difference. Result has 325 places, 377 transitions, 4879 flow [2024-06-27 22:35:48,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4642, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4879, PETRI_PLACES=325, PETRI_TRANSITIONS=377} [2024-06-27 22:35:48,280 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 283 predicate places. [2024-06-27 22:35:48,280 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 377 transitions, 4879 flow [2024-06-27 22:35:48,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:48,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:48,281 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 22:35:48,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 22:35:48,281 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:48,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:48,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1051921301, now seen corresponding path program 5 times [2024-06-27 22:35:48,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:48,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097585666] [2024-06-27 22:35:48,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:48,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:49,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:49,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097585666] [2024-06-27 22:35:49,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097585666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:49,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:49,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:35:49,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744542245] [2024-06-27 22:35:49,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:49,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:35:49,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:49,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:35:49,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:35:49,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:35:49,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 377 transitions, 4879 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:49,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:49,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:35:49,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:50,447 INFO L124 PetriNetUnfolderBase]: 1152/2254 cut-off events. [2024-06-27 22:35:50,447 INFO L125 PetriNetUnfolderBase]: For 160607/160617 co-relation queries the response was YES. [2024-06-27 22:35:50,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15738 conditions, 2254 events. 1152/2254 cut-off events. For 160607/160617 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 15301 event pairs, 340 based on Foata normal form. 2/2097 useless extension candidates. Maximal degree in co-relation 15577. Up to 1899 conditions per place. [2024-06-27 22:35:50,475 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 327 selfloop transitions, 49 changer transitions 0/391 dead transitions. [2024-06-27 22:35:50,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 391 transitions, 5801 flow [2024-06-27 22:35:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:50,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:35:50,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 22:35:50,476 INFO L175 Difference]: Start difference. First operand has 325 places, 377 transitions, 4879 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:35:50,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 391 transitions, 5801 flow [2024-06-27 22:35:51,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 391 transitions, 5580 flow, removed 66 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:51,312 INFO L231 Difference]: Finished difference. Result has 327 places, 379 transitions, 4905 flow [2024-06-27 22:35:51,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4658, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4905, PETRI_PLACES=327, PETRI_TRANSITIONS=379} [2024-06-27 22:35:51,313 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 285 predicate places. [2024-06-27 22:35:51,313 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 379 transitions, 4905 flow [2024-06-27 22:35:51,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:51,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:51,313 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 22:35:51,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 22:35:51,313 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:51,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:51,314 INFO L85 PathProgramCache]: Analyzing trace with hash 437083277, now seen corresponding path program 6 times [2024-06-27 22:35:51,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:51,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220333008] [2024-06-27 22:35:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:51,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:53,016 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 22:35:53,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:53,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220333008] [2024-06-27 22:35:53,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220333008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:53,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:53,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:35:53,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701122449] [2024-06-27 22:35:53,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:53,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:35:53,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:53,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:35:53,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:35:53,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:35:53,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 379 transitions, 4905 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:53,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:53,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:35:53,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:53,944 INFO L124 PetriNetUnfolderBase]: 1408/2658 cut-off events. [2024-06-27 22:35:53,944 INFO L125 PetriNetUnfolderBase]: For 151476/151476 co-relation queries the response was YES. [2024-06-27 22:35:53,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17596 conditions, 2658 events. 1408/2658 cut-off events. For 151476/151476 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 17841 event pairs, 475 based on Foata normal form. 2/2520 useless extension candidates. Maximal degree in co-relation 17434. Up to 2350 conditions per place. [2024-06-27 22:35:53,979 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 369 selfloop transitions, 24 changer transitions 0/403 dead transitions. [2024-06-27 22:35:53,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 403 transitions, 5913 flow [2024-06-27 22:35:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:35:53,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:35:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-27 22:35:53,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43640350877192985 [2024-06-27 22:35:53,989 INFO L175 Difference]: Start difference. First operand has 327 places, 379 transitions, 4905 flow. Second operand 12 states and 199 transitions. [2024-06-27 22:35:53,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 403 transitions, 5913 flow [2024-06-27 22:35:55,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 403 transitions, 5650 flow, removed 84 selfloop flow, removed 8 redundant places. [2024-06-27 22:35:55,060 INFO L231 Difference]: Finished difference. Result has 331 places, 381 transitions, 4835 flow [2024-06-27 22:35:55,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4658, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4835, PETRI_PLACES=331, PETRI_TRANSITIONS=381} [2024-06-27 22:35:55,060 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 289 predicate places. [2024-06-27 22:35:55,060 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 381 transitions, 4835 flow [2024-06-27 22:35:55,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:55,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:55,061 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 22:35:55,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 22:35:55,061 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:55,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:55,061 INFO L85 PathProgramCache]: Analyzing trace with hash 82820237, now seen corresponding path program 7 times [2024-06-27 22:35:55,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:55,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494184786] [2024-06-27 22:35:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:55,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:56,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:56,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494184786] [2024-06-27 22:35:56,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494184786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:56,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:56,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:35:56,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332994928] [2024-06-27 22:35:56,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:56,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:35:56,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:56,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:35:56,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:35:56,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:35:56,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 381 transitions, 4835 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:56,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:56,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:35:56,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:57,254 INFO L124 PetriNetUnfolderBase]: 1146/2244 cut-off events. [2024-06-27 22:35:57,255 INFO L125 PetriNetUnfolderBase]: For 133857/133867 co-relation queries the response was YES. [2024-06-27 22:35:57,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14670 conditions, 2244 events. 1146/2244 cut-off events. For 133857/133867 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 15206 event pairs, 338 based on Foata normal form. 2/2086 useless extension candidates. Maximal degree in co-relation 14506. Up to 1889 conditions per place. [2024-06-27 22:35:57,284 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 327 selfloop transitions, 53 changer transitions 0/395 dead transitions. [2024-06-27 22:35:57,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 395 transitions, 5771 flow [2024-06-27 22:35:57,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:35:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:35:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:35:57,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-06-27 22:35:57,285 INFO L175 Difference]: Start difference. First operand has 331 places, 381 transitions, 4835 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:35:57,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 395 transitions, 5771 flow [2024-06-27 22:35:58,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 395 transitions, 5612 flow, removed 57 selfloop flow, removed 10 redundant places. [2024-06-27 22:35:58,188 INFO L231 Difference]: Finished difference. Result has 331 places, 383 transitions, 4937 flow [2024-06-27 22:35:58,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4676, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4937, PETRI_PLACES=331, PETRI_TRANSITIONS=383} [2024-06-27 22:35:58,188 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 289 predicate places. [2024-06-27 22:35:58,188 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 383 transitions, 4937 flow [2024-06-27 22:35:58,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:58,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:58,189 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 22:35:58,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 22:35:58,189 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:58,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:58,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1025904520, now seen corresponding path program 1 times [2024-06-27 22:35:58,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:58,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476425956] [2024-06-27 22:35:58,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:58,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:59,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:59,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476425956] [2024-06-27 22:35:59,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476425956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:59,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:59,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:35:59,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76240705] [2024-06-27 22:35:59,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:59,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:35:59,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:59,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:35:59,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:35:59,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:35:59,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 383 transitions, 4937 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:35:59,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:59,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:35:59,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:00,528 INFO L124 PetriNetUnfolderBase]: 1434/2693 cut-off events. [2024-06-27 22:36:00,528 INFO L125 PetriNetUnfolderBase]: For 153253/153253 co-relation queries the response was YES. [2024-06-27 22:36:00,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17477 conditions, 2693 events. 1434/2693 cut-off events. For 153253/153253 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 18053 event pairs, 303 based on Foata normal form. 2/2554 useless extension candidates. Maximal degree in co-relation 17313. Up to 2216 conditions per place. [2024-06-27 22:36:00,563 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 346 selfloop transitions, 58 changer transitions 0/414 dead transitions. [2024-06-27 22:36:00,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 414 transitions, 6293 flow [2024-06-27 22:36:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:00,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 22:36:00,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:36:00,564 INFO L175 Difference]: Start difference. First operand has 331 places, 383 transitions, 4937 flow. Second operand 11 states and 198 transitions. [2024-06-27 22:36:00,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 414 transitions, 6293 flow [2024-06-27 22:36:01,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 414 transitions, 6048 flow, removed 71 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:01,785 INFO L231 Difference]: Finished difference. Result has 334 places, 387 transitions, 5047 flow [2024-06-27 22:36:01,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4692, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5047, PETRI_PLACES=334, PETRI_TRANSITIONS=387} [2024-06-27 22:36:01,785 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 292 predicate places. [2024-06-27 22:36:01,786 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 387 transitions, 5047 flow [2024-06-27 22:36:01,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:01,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:01,786 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 22:36:01,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 22:36:01,786 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:01,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:01,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1579368884, now seen corresponding path program 2 times [2024-06-27 22:36:01,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:01,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385805501] [2024-06-27 22:36:01,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:01,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:03,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:03,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385805501] [2024-06-27 22:36:03,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385805501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:03,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:03,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:03,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388429257] [2024-06-27 22:36:03,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:03,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:03,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:03,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:03,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:03,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:36:03,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 387 transitions, 5047 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:03,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:03,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:36:03,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:04,166 INFO L124 PetriNetUnfolderBase]: 1447/2728 cut-off events. [2024-06-27 22:36:04,166 INFO L125 PetriNetUnfolderBase]: For 153145/153145 co-relation queries the response was YES. [2024-06-27 22:36:04,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17483 conditions, 2728 events. 1447/2728 cut-off events. For 153145/153145 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 18366 event pairs, 343 based on Foata normal form. 2/2589 useless extension candidates. Maximal degree in co-relation 17317. Up to 2398 conditions per place. [2024-06-27 22:36:04,201 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 354 selfloop transitions, 47 changer transitions 0/411 dead transitions. [2024-06-27 22:36:04,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 411 transitions, 6047 flow [2024-06-27 22:36:04,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:04,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:04,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:36:04,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215311004784686 [2024-06-27 22:36:04,203 INFO L175 Difference]: Start difference. First operand has 334 places, 387 transitions, 5047 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:36:04,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 411 transitions, 6047 flow [2024-06-27 22:36:05,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 411 transitions, 5833 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:05,479 INFO L231 Difference]: Finished difference. Result has 338 places, 389 transitions, 5056 flow [2024-06-27 22:36:05,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4855, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5056, PETRI_PLACES=338, PETRI_TRANSITIONS=389} [2024-06-27 22:36:05,480 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 296 predicate places. [2024-06-27 22:36:05,480 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 389 transitions, 5056 flow [2024-06-27 22:36:05,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:05,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:05,480 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 22:36:05,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 22:36:05,480 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:05,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:05,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1579576274, now seen corresponding path program 3 times [2024-06-27 22:36:05,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:05,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339921155] [2024-06-27 22:36:05,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:05,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:06,905 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 22:36:06,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:06,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339921155] [2024-06-27 22:36:06,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339921155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:06,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:06,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:06,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631922567] [2024-06-27 22:36:06,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:06,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:06,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:06,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:06,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:07,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:36:07,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 389 transitions, 5056 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:07,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:07,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:36:07,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:07,835 INFO L124 PetriNetUnfolderBase]: 1444/2723 cut-off events. [2024-06-27 22:36:07,836 INFO L125 PetriNetUnfolderBase]: For 139348/139348 co-relation queries the response was YES. [2024-06-27 22:36:07,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17103 conditions, 2723 events. 1444/2723 cut-off events. For 139348/139348 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 18306 event pairs, 335 based on Foata normal form. 2/2587 useless extension candidates. Maximal degree in co-relation 16935. Up to 2331 conditions per place. [2024-06-27 22:36:07,871 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 351 selfloop transitions, 52 changer transitions 0/413 dead transitions. [2024-06-27 22:36:07,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 413 transitions, 5950 flow [2024-06-27 22:36:07,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:07,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:36:07,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46172248803827753 [2024-06-27 22:36:07,872 INFO L175 Difference]: Start difference. First operand has 338 places, 389 transitions, 5056 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:36:07,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 413 transitions, 5950 flow [2024-06-27 22:36:09,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 413 transitions, 5701 flow, removed 80 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:09,053 INFO L231 Difference]: Finished difference. Result has 340 places, 389 transitions, 4918 flow [2024-06-27 22:36:09,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4807, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4918, PETRI_PLACES=340, PETRI_TRANSITIONS=389} [2024-06-27 22:36:09,054 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 298 predicate places. [2024-06-27 22:36:09,054 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 389 transitions, 4918 flow [2024-06-27 22:36:09,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:09,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:09,054 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 22:36:09,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 22:36:09,054 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:09,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:09,055 INFO L85 PathProgramCache]: Analyzing trace with hash -64253428, now seen corresponding path program 4 times [2024-06-27 22:36:09,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:09,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348731314] [2024-06-27 22:36:09,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:09,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:10,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:10,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348731314] [2024-06-27 22:36:10,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348731314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:10,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:10,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:10,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423765692] [2024-06-27 22:36:10,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:10,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:10,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:10,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:10,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:10,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:36:10,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 389 transitions, 4918 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:10,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:10,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:36:10,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:11,436 INFO L124 PetriNetUnfolderBase]: 1457/2739 cut-off events. [2024-06-27 22:36:11,437 INFO L125 PetriNetUnfolderBase]: For 140849/140849 co-relation queries the response was YES. [2024-06-27 22:36:11,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17190 conditions, 2739 events. 1457/2739 cut-off events. For 140849/140849 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 18365 event pairs, 292 based on Foata normal form. 2/2598 useless extension candidates. Maximal degree in co-relation 17021. Up to 2280 conditions per place. [2024-06-27 22:36:11,473 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 358 selfloop transitions, 52 changer transitions 0/420 dead transitions. [2024-06-27 22:36:11,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 420 transitions, 5967 flow [2024-06-27 22:36:11,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:11,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:11,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 22:36:11,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2024-06-27 22:36:11,474 INFO L175 Difference]: Start difference. First operand has 340 places, 389 transitions, 4918 flow. Second operand 11 states and 196 transitions. [2024-06-27 22:36:11,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 420 transitions, 5967 flow [2024-06-27 22:36:12,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 420 transitions, 5826 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 22:36:12,720 INFO L231 Difference]: Finished difference. Result has 341 places, 391 transitions, 5011 flow [2024-06-27 22:36:12,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4777, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5011, PETRI_PLACES=341, PETRI_TRANSITIONS=391} [2024-06-27 22:36:12,721 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 299 predicate places. [2024-06-27 22:36:12,721 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 391 transitions, 5011 flow [2024-06-27 22:36:12,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:12,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:12,721 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 22:36:12,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 22:36:12,722 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:12,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:12,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1579360948, now seen corresponding path program 1 times [2024-06-27 22:36:12,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:12,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796015477] [2024-06-27 22:36:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:12,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:14,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:14,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:14,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796015477] [2024-06-27 22:36:14,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796015477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:14,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:14,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:36:14,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107538900] [2024-06-27 22:36:14,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:14,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:36:14,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:14,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:36:14,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:36:14,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:36:14,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 391 transitions, 5011 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:14,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:14,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:36:14,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:15,562 INFO L124 PetriNetUnfolderBase]: 1464/2760 cut-off events. [2024-06-27 22:36:15,562 INFO L125 PetriNetUnfolderBase]: For 138099/138099 co-relation queries the response was YES. [2024-06-27 22:36:15,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17390 conditions, 2760 events. 1464/2760 cut-off events. For 138099/138099 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 18593 event pairs, 360 based on Foata normal form. 1/2619 useless extension candidates. Maximal degree in co-relation 17220. Up to 2393 conditions per place. [2024-06-27 22:36:15,598 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 340 selfloop transitions, 69 changer transitions 0/419 dead transitions. [2024-06-27 22:36:15,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 419 transitions, 5979 flow [2024-06-27 22:36:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:36:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:36:15,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 218 transitions. [2024-06-27 22:36:15,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44129554655870445 [2024-06-27 22:36:15,599 INFO L175 Difference]: Start difference. First operand has 341 places, 391 transitions, 5011 flow. Second operand 13 states and 218 transitions. [2024-06-27 22:36:15,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 419 transitions, 5979 flow [2024-06-27 22:36:16,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 419 transitions, 5767 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:16,916 INFO L231 Difference]: Finished difference. Result has 345 places, 393 transitions, 5002 flow [2024-06-27 22:36:16,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4799, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5002, PETRI_PLACES=345, PETRI_TRANSITIONS=393} [2024-06-27 22:36:16,917 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 303 predicate places. [2024-06-27 22:36:16,917 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 393 transitions, 5002 flow [2024-06-27 22:36:16,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:16,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:16,917 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 22:36:16,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 22:36:16,917 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:16,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:16,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1594829680, now seen corresponding path program 5 times [2024-06-27 22:36:16,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:16,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399427768] [2024-06-27 22:36:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:16,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:18,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:18,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399427768] [2024-06-27 22:36:18,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399427768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:18,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:18,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:18,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264480755] [2024-06-27 22:36:18,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:18,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:18,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:18,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:18,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:18,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:36:18,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 393 transitions, 5002 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:18,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:18,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:36:18,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:19,486 INFO L124 PetriNetUnfolderBase]: 1477/2780 cut-off events. [2024-06-27 22:36:19,487 INFO L125 PetriNetUnfolderBase]: For 146449/146449 co-relation queries the response was YES. [2024-06-27 22:36:19,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17506 conditions, 2780 events. 1477/2780 cut-off events. For 146449/146449 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 18744 event pairs, 345 based on Foata normal form. 2/2637 useless extension candidates. Maximal degree in co-relation 17335. Up to 2379 conditions per place. [2024-06-27 22:36:19,516 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 330 selfloop transitions, 77 changer transitions 0/417 dead transitions. [2024-06-27 22:36:19,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 417 transitions, 6020 flow [2024-06-27 22:36:19,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:36:19,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46172248803827753 [2024-06-27 22:36:19,518 INFO L175 Difference]: Start difference. First operand has 345 places, 393 transitions, 5002 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:36:19,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 417 transitions, 6020 flow [2024-06-27 22:36:20,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 417 transitions, 5841 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-27 22:36:20,969 INFO L231 Difference]: Finished difference. Result has 345 places, 395 transitions, 5109 flow [2024-06-27 22:36:20,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4823, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5109, PETRI_PLACES=345, PETRI_TRANSITIONS=395} [2024-06-27 22:36:20,970 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 303 predicate places. [2024-06-27 22:36:20,970 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 395 transitions, 5109 flow [2024-06-27 22:36:20,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:20,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:20,970 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 22:36:20,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 22:36:20,970 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:20,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:20,971 INFO L85 PathProgramCache]: Analyzing trace with hash -999039292, now seen corresponding path program 6 times [2024-06-27 22:36:20,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:20,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141471160] [2024-06-27 22:36:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:20,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:22,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:22,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141471160] [2024-06-27 22:36:22,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141471160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:22,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:22,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:22,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752141909] [2024-06-27 22:36:22,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:22,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:22,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:22,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:22,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:22,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:36:22,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 395 transitions, 5109 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:22,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:22,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:36:22,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:23,297 INFO L124 PetriNetUnfolderBase]: 1490/2802 cut-off events. [2024-06-27 22:36:23,297 INFO L125 PetriNetUnfolderBase]: For 152271/152271 co-relation queries the response was YES. [2024-06-27 22:36:23,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17740 conditions, 2802 events. 1490/2802 cut-off events. For 152271/152271 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 18914 event pairs, 351 based on Foata normal form. 2/2662 useless extension candidates. Maximal degree in co-relation 17568. Up to 2353 conditions per place. [2024-06-27 22:36:23,335 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 330 selfloop transitions, 81 changer transitions 0/421 dead transitions. [2024-06-27 22:36:23,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 421 transitions, 6147 flow [2024-06-27 22:36:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:23,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-27 22:36:23,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47129186602870815 [2024-06-27 22:36:23,337 INFO L175 Difference]: Start difference. First operand has 345 places, 395 transitions, 5109 flow. Second operand 11 states and 197 transitions. [2024-06-27 22:36:23,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 421 transitions, 6147 flow [2024-06-27 22:36:24,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 421 transitions, 5879 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:24,817 INFO L231 Difference]: Finished difference. Result has 347 places, 397 transitions, 5139 flow [2024-06-27 22:36:24,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4841, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5139, PETRI_PLACES=347, PETRI_TRANSITIONS=397} [2024-06-27 22:36:24,818 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 305 predicate places. [2024-06-27 22:36:24,818 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 397 transitions, 5139 flow [2024-06-27 22:36:24,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:24,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:24,818 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 22:36:24,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 22:36:24,818 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:24,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:24,819 INFO L85 PathProgramCache]: Analyzing trace with hash -479819124, now seen corresponding path program 7 times [2024-06-27 22:36:24,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:24,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927188244] [2024-06-27 22:36:24,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:24,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:26,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:26,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927188244] [2024-06-27 22:36:26,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927188244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:26,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:26,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:26,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098811663] [2024-06-27 22:36:26,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:26,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:26,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:26,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:26,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:26,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:36:26,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 397 transitions, 5139 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:26,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:26,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:36:26,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:27,160 INFO L124 PetriNetUnfolderBase]: 1519/2854 cut-off events. [2024-06-27 22:36:27,160 INFO L125 PetriNetUnfolderBase]: For 172313/172313 co-relation queries the response was YES. [2024-06-27 22:36:27,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18432 conditions, 2854 events. 1519/2854 cut-off events. For 172313/172313 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 19335 event pairs, 348 based on Foata normal form. 2/2711 useless extension candidates. Maximal degree in co-relation 18259. Up to 2259 conditions per place. [2024-06-27 22:36:27,197 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 327 selfloop transitions, 91 changer transitions 0/428 dead transitions. [2024-06-27 22:36:27,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 428 transitions, 6571 flow [2024-06-27 22:36:27,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:27,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:27,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 22:36:27,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-27 22:36:27,198 INFO L175 Difference]: Start difference. First operand has 347 places, 397 transitions, 5139 flow. Second operand 11 states and 200 transitions. [2024-06-27 22:36:27,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 428 transitions, 6571 flow [2024-06-27 22:36:28,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 428 transitions, 6291 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:28,789 INFO L231 Difference]: Finished difference. Result has 349 places, 401 transitions, 5311 flow [2024-06-27 22:36:28,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4859, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5311, PETRI_PLACES=349, PETRI_TRANSITIONS=401} [2024-06-27 22:36:28,789 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 307 predicate places. [2024-06-27 22:36:28,789 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 401 transitions, 5311 flow [2024-06-27 22:36:28,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:28,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:28,790 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 22:36:28,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 22:36:28,790 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:28,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:28,790 INFO L85 PathProgramCache]: Analyzing trace with hash -280165794, now seen corresponding path program 8 times [2024-06-27 22:36:28,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:28,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760700232] [2024-06-27 22:36:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:28,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:30,531 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 22:36:30,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:30,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760700232] [2024-06-27 22:36:30,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760700232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:30,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:30,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:30,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704737614] [2024-06-27 22:36:30,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:30,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:30,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:30,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:30,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:30,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:36:30,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 401 transitions, 5311 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:30,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:30,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:36:30,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:31,653 INFO L124 PetriNetUnfolderBase]: 1532/2877 cut-off events. [2024-06-27 22:36:31,653 INFO L125 PetriNetUnfolderBase]: For 176152/176152 co-relation queries the response was YES. [2024-06-27 22:36:31,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18640 conditions, 2877 events. 1532/2877 cut-off events. For 176152/176152 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 19498 event pairs, 374 based on Foata normal form. 2/2734 useless extension candidates. Maximal degree in co-relation 18466. Up to 2476 conditions per place. [2024-06-27 22:36:31,691 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 333 selfloop transitions, 82 changer transitions 0/425 dead transitions. [2024-06-27 22:36:31,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 425 transitions, 6357 flow [2024-06-27 22:36:31,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:31,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:36:31,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45933014354066987 [2024-06-27 22:36:31,693 INFO L175 Difference]: Start difference. First operand has 349 places, 401 transitions, 5311 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:36:31,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 425 transitions, 6357 flow [2024-06-27 22:36:33,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 425 transitions, 6078 flow, removed 91 selfloop flow, removed 7 redundant places. [2024-06-27 22:36:33,282 INFO L231 Difference]: Finished difference. Result has 353 places, 403 transitions, 5340 flow [2024-06-27 22:36:33,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5060, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5340, PETRI_PLACES=353, PETRI_TRANSITIONS=403} [2024-06-27 22:36:33,282 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 311 predicate places. [2024-06-27 22:36:33,282 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 403 transitions, 5340 flow [2024-06-27 22:36:33,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:33,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:33,283 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 22:36:33,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 22:36:33,283 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:33,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:33,283 INFO L85 PathProgramCache]: Analyzing trace with hash -249971978, now seen corresponding path program 9 times [2024-06-27 22:36:33,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:33,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344507390] [2024-06-27 22:36:33,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:33,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:34,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:34,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:34,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344507390] [2024-06-27 22:36:34,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344507390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:34,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:34,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:34,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349322826] [2024-06-27 22:36:34,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:34,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:34,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:34,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:34,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:34,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:36:34,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 403 transitions, 5340 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:34,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:34,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:36:34,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:35,834 INFO L124 PetriNetUnfolderBase]: 1545/2901 cut-off events. [2024-06-27 22:36:35,835 INFO L125 PetriNetUnfolderBase]: For 175017/175017 co-relation queries the response was YES. [2024-06-27 22:36:35,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18723 conditions, 2901 events. 1545/2901 cut-off events. For 175017/175017 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 19689 event pairs, 368 based on Foata normal form. 2/2760 useless extension candidates. Maximal degree in co-relation 18547. Up to 2430 conditions per place. [2024-06-27 22:36:35,871 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 332 selfloop transitions, 88 changer transitions 0/430 dead transitions. [2024-06-27 22:36:35,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 430 transitions, 6622 flow [2024-06-27 22:36:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:35,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 22:36:35,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2024-06-27 22:36:35,873 INFO L175 Difference]: Start difference. First operand has 353 places, 403 transitions, 5340 flow. Second operand 11 states and 196 transitions. [2024-06-27 22:36:35,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 430 transitions, 6622 flow [2024-06-27 22:36:37,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 430 transitions, 6364 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:37,457 INFO L231 Difference]: Finished difference. Result has 355 places, 405 transitions, 5374 flow [2024-06-27 22:36:37,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5082, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5374, PETRI_PLACES=355, PETRI_TRANSITIONS=405} [2024-06-27 22:36:37,457 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 313 predicate places. [2024-06-27 22:36:37,457 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 405 transitions, 5374 flow [2024-06-27 22:36:37,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:37,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:37,458 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 22:36:37,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 22:36:37,458 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:37,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:37,458 INFO L85 PathProgramCache]: Analyzing trace with hash -273015954, now seen corresponding path program 10 times [2024-06-27 22:36:37,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:37,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841272860] [2024-06-27 22:36:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:37,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:38,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:38,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841272860] [2024-06-27 22:36:38,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841272860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:38,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:38,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:38,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663957340] [2024-06-27 22:36:38,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:38,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:38,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:38,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:38,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:38,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:36:38,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 405 transitions, 5374 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:38,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:38,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:36:38,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:39,688 INFO L124 PetriNetUnfolderBase]: 1542/2896 cut-off events. [2024-06-27 22:36:39,688 INFO L125 PetriNetUnfolderBase]: For 160732/160732 co-relation queries the response was YES. [2024-06-27 22:36:39,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18393 conditions, 2896 events. 1542/2896 cut-off events. For 160732/160732 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 19660 event pairs, 374 based on Foata normal form. 2/2752 useless extension candidates. Maximal degree in co-relation 18216. Up to 2494 conditions per place. [2024-06-27 22:36:39,725 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 328 selfloop transitions, 89 changer transitions 0/427 dead transitions. [2024-06-27 22:36:39,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 427 transitions, 6290 flow [2024-06-27 22:36:39,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:39,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 22:36:39,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4569377990430622 [2024-06-27 22:36:39,727 INFO L175 Difference]: Start difference. First operand has 355 places, 405 transitions, 5374 flow. Second operand 11 states and 191 transitions. [2024-06-27 22:36:39,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 427 transitions, 6290 flow [2024-06-27 22:36:41,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 427 transitions, 5906 flow, removed 98 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:41,286 INFO L231 Difference]: Finished difference. Result has 357 places, 405 transitions, 5174 flow [2024-06-27 22:36:41,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4990, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5174, PETRI_PLACES=357, PETRI_TRANSITIONS=405} [2024-06-27 22:36:41,287 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 315 predicate places. [2024-06-27 22:36:41,287 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 405 transitions, 5174 flow [2024-06-27 22:36:41,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:41,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:41,287 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 22:36:41,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 22:36:41,287 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:41,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:41,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2142086006, now seen corresponding path program 2 times [2024-06-27 22:36:41,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:41,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34309271] [2024-06-27 22:36:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:41,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:42,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:42,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34309271] [2024-06-27 22:36:42,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34309271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:42,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:42,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:36:42,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760148252] [2024-06-27 22:36:42,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:42,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:36:42,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:42,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:36:42,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:36:43,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:36:43,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 405 transitions, 5174 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:43,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:43,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:36:43,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:43,979 INFO L124 PetriNetUnfolderBase]: 1288/2493 cut-off events. [2024-06-27 22:36:43,979 INFO L125 PetriNetUnfolderBase]: For 149738/149747 co-relation queries the response was YES. [2024-06-27 22:36:44,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16027 conditions, 2493 events. 1288/2493 cut-off events. For 149738/149747 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 17126 event pairs, 359 based on Foata normal form. 3/2321 useless extension candidates. Maximal degree in co-relation 15849. Up to 2054 conditions per place. [2024-06-27 22:36:44,014 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 315 selfloop transitions, 89 changer transitions 0/419 dead transitions. [2024-06-27 22:36:44,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 419 transitions, 6070 flow [2024-06-27 22:36:44,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:44,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:44,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:36:44,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46172248803827753 [2024-06-27 22:36:44,015 INFO L175 Difference]: Start difference. First operand has 357 places, 405 transitions, 5174 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:36:44,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 419 transitions, 6070 flow [2024-06-27 22:36:45,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 419 transitions, 5874 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 22:36:45,370 INFO L231 Difference]: Finished difference. Result has 358 places, 407 transitions, 5225 flow [2024-06-27 22:36:45,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4978, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5225, PETRI_PLACES=358, PETRI_TRANSITIONS=407} [2024-06-27 22:36:45,371 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 316 predicate places. [2024-06-27 22:36:45,371 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 407 transitions, 5225 flow [2024-06-27 22:36:45,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:45,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:45,371 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 22:36:45,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 22:36:45,371 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:45,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:45,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1999096210, now seen corresponding path program 3 times [2024-06-27 22:36:45,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:45,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677013992] [2024-06-27 22:36:45,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:45,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:47,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:47,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677013992] [2024-06-27 22:36:47,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677013992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:47,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:47,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:36:47,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871573133] [2024-06-27 22:36:47,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:47,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:36:47,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:47,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:36:47,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:36:47,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:36:47,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 407 transitions, 5225 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:47,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:47,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:36:47,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:48,089 INFO L124 PetriNetUnfolderBase]: 1296/2503 cut-off events. [2024-06-27 22:36:48,089 INFO L125 PetriNetUnfolderBase]: For 152967/152976 co-relation queries the response was YES. [2024-06-27 22:36:48,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16254 conditions, 2503 events. 1296/2503 cut-off events. For 152967/152976 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 17191 event pairs, 359 based on Foata normal form. 7/2331 useless extension candidates. Maximal degree in co-relation 16075. Up to 2065 conditions per place. [2024-06-27 22:36:48,122 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 312 selfloop transitions, 94 changer transitions 0/421 dead transitions. [2024-06-27 22:36:48,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 421 transitions, 6129 flow [2024-06-27 22:36:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:48,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:36:48,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:36:48,123 INFO L175 Difference]: Start difference. First operand has 358 places, 407 transitions, 5225 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:36:48,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 421 transitions, 6129 flow [2024-06-27 22:36:49,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 421 transitions, 5906 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 22:36:49,522 INFO L231 Difference]: Finished difference. Result has 359 places, 409 transitions, 5263 flow [2024-06-27 22:36:49,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5002, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5263, PETRI_PLACES=359, PETRI_TRANSITIONS=409} [2024-06-27 22:36:49,522 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 317 predicate places. [2024-06-27 22:36:49,522 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 409 transitions, 5263 flow [2024-06-27 22:36:49,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:49,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:49,523 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 22:36:49,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 22:36:49,523 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:49,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:49,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1742595700, now seen corresponding path program 4 times [2024-06-27 22:36:49,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:49,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470958150] [2024-06-27 22:36:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:49,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:51,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:51,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:51,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470958150] [2024-06-27 22:36:51,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470958150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:51,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:51,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:51,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624524968] [2024-06-27 22:36:51,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:51,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:51,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:51,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:51,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:51,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:36:51,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 409 transitions, 5263 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:51,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:51,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:36:51,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:51,954 INFO L124 PetriNetUnfolderBase]: 1304/2514 cut-off events. [2024-06-27 22:36:51,955 INFO L125 PetriNetUnfolderBase]: For 155070/155079 co-relation queries the response was YES. [2024-06-27 22:36:51,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16362 conditions, 2514 events. 1304/2514 cut-off events. For 155070/155079 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 17264 event pairs, 359 based on Foata normal form. 7/2338 useless extension candidates. Maximal degree in co-relation 16184. Up to 2076 conditions per place. [2024-06-27 22:36:51,989 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 304 selfloop transitions, 103 changer transitions 0/423 dead transitions. [2024-06-27 22:36:51,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 423 transitions, 6173 flow [2024-06-27 22:36:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:51,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 22:36:51,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-06-27 22:36:51,990 INFO L175 Difference]: Start difference. First operand has 359 places, 409 transitions, 5263 flow. Second operand 10 states and 188 transitions. [2024-06-27 22:36:51,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 423 transitions, 6173 flow [2024-06-27 22:36:53,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 423 transitions, 5936 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:53,348 INFO L231 Difference]: Finished difference. Result has 361 places, 411 transitions, 5309 flow [2024-06-27 22:36:53,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5026, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5309, PETRI_PLACES=361, PETRI_TRANSITIONS=411} [2024-06-27 22:36:53,348 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 319 predicate places. [2024-06-27 22:36:53,349 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 411 transitions, 5309 flow [2024-06-27 22:36:53,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:53,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:53,349 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 22:36:53,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 22:36:53,349 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:53,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:53,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1733398930, now seen corresponding path program 5 times [2024-06-27 22:36:53,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:53,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478799246] [2024-06-27 22:36:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:53,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:54,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:54,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478799246] [2024-06-27 22:36:54,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478799246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:54,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:54,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:36:54,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824143489] [2024-06-27 22:36:54,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:54,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:36:54,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:54,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:36:54,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:36:54,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:36:54,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 411 transitions, 5309 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:54,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:54,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:36:54,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:55,395 INFO L124 PetriNetUnfolderBase]: 1312/2528 cut-off events. [2024-06-27 22:36:55,396 INFO L125 PetriNetUnfolderBase]: For 157290/157299 co-relation queries the response was YES. [2024-06-27 22:36:55,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16480 conditions, 2528 events. 1312/2528 cut-off events. For 157290/157299 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 17400 event pairs, 359 based on Foata normal form. 7/2348 useless extension candidates. Maximal degree in co-relation 16301. Up to 2087 conditions per place. [2024-06-27 22:36:55,432 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 294 selfloop transitions, 115 changer transitions 0/425 dead transitions. [2024-06-27 22:36:55,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 425 transitions, 6227 flow [2024-06-27 22:36:55,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:55,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:55,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 22:36:55,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-27 22:36:55,433 INFO L175 Difference]: Start difference. First operand has 361 places, 411 transitions, 5309 flow. Second operand 10 states and 187 transitions. [2024-06-27 22:36:55,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 425 transitions, 6227 flow [2024-06-27 22:36:56,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 425 transitions, 5968 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 22:36:56,875 INFO L231 Difference]: Finished difference. Result has 363 places, 413 transitions, 5361 flow [2024-06-27 22:36:56,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5050, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5361, PETRI_PLACES=363, PETRI_TRANSITIONS=413} [2024-06-27 22:36:56,875 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 321 predicate places. [2024-06-27 22:36:56,875 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 413 transitions, 5361 flow [2024-06-27 22:36:56,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:56,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:56,876 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 22:36:56,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 22:36:56,876 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:56,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:56,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1733389630, now seen corresponding path program 6 times [2024-06-27 22:36:56,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:56,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988578980] [2024-06-27 22:36:56,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:56,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:36:58,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:58,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988578980] [2024-06-27 22:36:58,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988578980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:58,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:58,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:36:58,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381816790] [2024-06-27 22:36:58,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:58,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:36:58,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:58,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:36:58,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:36:58,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:36:58,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 413 transitions, 5361 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:58,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:58,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:36:58,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:59,205 INFO L124 PetriNetUnfolderBase]: 1317/2537 cut-off events. [2024-06-27 22:36:59,205 INFO L125 PetriNetUnfolderBase]: For 158917/158926 co-relation queries the response was YES. [2024-06-27 22:36:59,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16523 conditions, 2537 events. 1317/2537 cut-off events. For 158917/158926 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 17422 event pairs, 359 based on Foata normal form. 7/2355 useless extension candidates. Maximal degree in co-relation 16342. Up to 2070 conditions per place. [2024-06-27 22:36:59,236 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 285 selfloop transitions, 127 changer transitions 0/427 dead transitions. [2024-06-27 22:36:59,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 427 transitions, 6289 flow [2024-06-27 22:36:59,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:59,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:59,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 22:36:59,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4569377990430622 [2024-06-27 22:36:59,237 INFO L175 Difference]: Start difference. First operand has 363 places, 413 transitions, 5361 flow. Second operand 11 states and 191 transitions. [2024-06-27 22:36:59,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 427 transitions, 6289 flow [2024-06-27 22:37:00,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 427 transitions, 6002 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 22:37:00,745 INFO L231 Difference]: Finished difference. Result has 366 places, 415 transitions, 5413 flow [2024-06-27 22:37:00,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5074, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5413, PETRI_PLACES=366, PETRI_TRANSITIONS=415} [2024-06-27 22:37:00,745 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-06-27 22:37:00,745 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 415 transitions, 5413 flow [2024-06-27 22:37:00,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:00,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:00,746 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 22:37:00,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 22:37:00,746 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:00,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:00,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1132035282, now seen corresponding path program 11 times [2024-06-27 22:37:00,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:00,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222700015] [2024-06-27 22:37:00,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:00,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:01,899 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 22:37:01,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:01,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222700015] [2024-06-27 22:37:01,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222700015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:01,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:01,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:01,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046985343] [2024-06-27 22:37:01,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:01,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:01,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:01,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:01,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:02,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:37:02,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 415 transitions, 5413 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:02,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:02,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:37:02,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:02,902 INFO L124 PetriNetUnfolderBase]: 1597/2990 cut-off events. [2024-06-27 22:37:02,902 INFO L125 PetriNetUnfolderBase]: For 171869/171869 co-relation queries the response was YES. [2024-06-27 22:37:02,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19024 conditions, 2990 events. 1597/2990 cut-off events. For 171869/171869 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 20348 event pairs, 358 based on Foata normal form. 2/2836 useless extension candidates. Maximal degree in co-relation 18841. Up to 2533 conditions per place. [2024-06-27 22:37:02,943 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 390 selfloop transitions, 50 changer transitions 0/450 dead transitions. [2024-06-27 22:37:02,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 450 transitions, 6551 flow [2024-06-27 22:37:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:02,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 22:37:02,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2024-06-27 22:37:02,944 INFO L175 Difference]: Start difference. First operand has 366 places, 415 transitions, 5413 flow. Second operand 11 states and 196 transitions. [2024-06-27 22:37:02,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 450 transitions, 6551 flow [2024-06-27 22:37:04,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 450 transitions, 6236 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:04,769 INFO L231 Difference]: Finished difference. Result has 368 places, 419 transitions, 5357 flow [2024-06-27 22:37:04,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5098, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5357, PETRI_PLACES=368, PETRI_TRANSITIONS=419} [2024-06-27 22:37:04,769 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 326 predicate places. [2024-06-27 22:37:04,769 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 419 transitions, 5357 flow [2024-06-27 22:37:04,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:04,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:04,770 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 22:37:04,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 22:37:04,770 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:04,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:04,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1934921230, now seen corresponding path program 12 times [2024-06-27 22:37:04,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:04,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568042367] [2024-06-27 22:37:04,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:04,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:05,990 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 22:37:05,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:05,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568042367] [2024-06-27 22:37:05,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568042367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:05,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:05,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:05,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311957573] [2024-06-27 22:37:05,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:05,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:05,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:05,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:05,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:06,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:37:06,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 419 transitions, 5357 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:06,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:06,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:37:06,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:07,097 INFO L124 PetriNetUnfolderBase]: 1647/3082 cut-off events. [2024-06-27 22:37:07,098 INFO L125 PetriNetUnfolderBase]: For 195009/195009 co-relation queries the response was YES. [2024-06-27 22:37:07,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19775 conditions, 3082 events. 1647/3082 cut-off events. For 195009/195009 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 21109 event pairs, 393 based on Foata normal form. 2/2934 useless extension candidates. Maximal degree in co-relation 19591. Up to 2566 conditions per place. [2024-06-27 22:37:07,137 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 383 selfloop transitions, 65 changer transitions 0/458 dead transitions. [2024-06-27 22:37:07,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 458 transitions, 6921 flow [2024-06-27 22:37:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:07,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 22:37:07,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:37:07,139 INFO L175 Difference]: Start difference. First operand has 368 places, 419 transitions, 5357 flow. Second operand 11 states and 198 transitions. [2024-06-27 22:37:07,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 458 transitions, 6921 flow [2024-06-27 22:37:08,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 458 transitions, 6702 flow, removed 63 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:08,903 INFO L231 Difference]: Finished difference. Result has 371 places, 429 transitions, 5623 flow [2024-06-27 22:37:08,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5138, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5623, PETRI_PLACES=371, PETRI_TRANSITIONS=429} [2024-06-27 22:37:08,904 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 329 predicate places. [2024-06-27 22:37:08,904 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 429 transitions, 5623 flow [2024-06-27 22:37:08,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:08,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:08,904 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 22:37:08,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 22:37:08,904 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:08,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:08,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1647614748, now seen corresponding path program 13 times [2024-06-27 22:37:08,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:08,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651495382] [2024-06-27 22:37:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:08,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:10,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:10,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:10,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651495382] [2024-06-27 22:37:10,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651495382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:10,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:10,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:10,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442004345] [2024-06-27 22:37:10,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:10,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:10,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:10,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:10,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:10,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:37:10,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 429 transitions, 5623 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:10,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:10,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:37:10,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:11,163 INFO L124 PetriNetUnfolderBase]: 1660/3107 cut-off events. [2024-06-27 22:37:11,163 INFO L125 PetriNetUnfolderBase]: For 199033/199033 co-relation queries the response was YES. [2024-06-27 22:37:11,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20113 conditions, 3107 events. 1660/3107 cut-off events. For 199033/199033 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 21368 event pairs, 445 based on Foata normal form. 2/2955 useless extension candidates. Maximal degree in co-relation 19927. Up to 2758 conditions per place. [2024-06-27 22:37:11,207 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 395 selfloop transitions, 50 changer transitions 0/455 dead transitions. [2024-06-27 22:37:11,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 455 transitions, 6745 flow [2024-06-27 22:37:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:37:11,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215311004784686 [2024-06-27 22:37:11,209 INFO L175 Difference]: Start difference. First operand has 371 places, 429 transitions, 5623 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:37:11,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 455 transitions, 6745 flow [2024-06-27 22:37:13,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 455 transitions, 6501 flow, removed 91 selfloop flow, removed 7 redundant places. [2024-06-27 22:37:13,173 INFO L231 Difference]: Finished difference. Result has 375 places, 431 transitions, 5636 flow [2024-06-27 22:37:13,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5405, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5636, PETRI_PLACES=375, PETRI_TRANSITIONS=431} [2024-06-27 22:37:13,174 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 333 predicate places. [2024-06-27 22:37:13,174 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 431 transitions, 5636 flow [2024-06-27 22:37:13,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:13,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:13,174 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 22:37:13,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 22:37:13,175 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:13,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:13,175 INFO L85 PathProgramCache]: Analyzing trace with hash -789793630, now seen corresponding path program 14 times [2024-06-27 22:37:13,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:13,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525274886] [2024-06-27 22:37:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:13,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:14,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:14,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525274886] [2024-06-27 22:37:14,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525274886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:14,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:14,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:14,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177094386] [2024-06-27 22:37:14,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:14,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:14,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:14,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:14,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:14,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:37:14,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 431 transitions, 5636 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:14,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:14,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:37:14,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:15,460 INFO L124 PetriNetUnfolderBase]: 1657/3101 cut-off events. [2024-06-27 22:37:15,461 INFO L125 PetriNetUnfolderBase]: For 178968/178968 co-relation queries the response was YES. [2024-06-27 22:37:15,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19615 conditions, 3101 events. 1657/3101 cut-off events. For 178968/178968 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 21276 event pairs, 426 based on Foata normal form. 2/2951 useless extension candidates. Maximal degree in co-relation 19427. Up to 2686 conditions per place. [2024-06-27 22:37:15,502 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 390 selfloop transitions, 57 changer transitions 0/457 dead transitions. [2024-06-27 22:37:15,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 457 transitions, 6626 flow [2024-06-27 22:37:15,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:15,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:15,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:37:15,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46172248803827753 [2024-06-27 22:37:15,503 INFO L175 Difference]: Start difference. First operand has 375 places, 431 transitions, 5636 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:37:15,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 457 transitions, 6626 flow [2024-06-27 22:37:17,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 457 transitions, 6341 flow, removed 96 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:17,121 INFO L231 Difference]: Finished difference. Result has 377 places, 431 transitions, 5474 flow [2024-06-27 22:37:17,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5351, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5474, PETRI_PLACES=377, PETRI_TRANSITIONS=431} [2024-06-27 22:37:17,122 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-27 22:37:17,122 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 431 transitions, 5474 flow [2024-06-27 22:37:17,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:17,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:17,122 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 22:37:17,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 22:37:17,122 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:17,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:17,123 INFO L85 PathProgramCache]: Analyzing trace with hash 249737428, now seen corresponding path program 15 times [2024-06-27 22:37:17,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:17,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712951836] [2024-06-27 22:37:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:17,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:18,211 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 22:37:18,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:18,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712951836] [2024-06-27 22:37:18,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712951836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:18,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:18,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:18,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131650284] [2024-06-27 22:37:18,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:18,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:18,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:18,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:18,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:18,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:37:18,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 431 transitions, 5474 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:18,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:18,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:37:18,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:19,164 INFO L124 PetriNetUnfolderBase]: 1592/3059 cut-off events. [2024-06-27 22:37:19,165 INFO L125 PetriNetUnfolderBase]: For 184306/184310 co-relation queries the response was YES. [2024-06-27 22:37:19,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19027 conditions, 3059 events. 1592/3059 cut-off events. For 184306/184310 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 21528 event pairs, 175 based on Foata normal form. 5/2944 useless extension candidates. Maximal degree in co-relation 18838. Up to 1861 conditions per place. [2024-06-27 22:37:19,209 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 266 selfloop transitions, 104 changer transitions 0/471 dead transitions. [2024-06-27 22:37:19,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 471 transitions, 6618 flow [2024-06-27 22:37:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:19,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:19,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-06-27 22:37:19,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289473684210526 [2024-06-27 22:37:19,210 INFO L175 Difference]: Start difference. First operand has 377 places, 431 transitions, 5474 flow. Second operand 10 states and 201 transitions. [2024-06-27 22:37:19,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 471 transitions, 6618 flow [2024-06-27 22:37:20,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 471 transitions, 6465 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 22:37:20,792 INFO L231 Difference]: Finished difference. Result has 377 places, 435 transitions, 5731 flow [2024-06-27 22:37:20,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5321, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5731, PETRI_PLACES=377, PETRI_TRANSITIONS=435} [2024-06-27 22:37:20,793 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-27 22:37:20,793 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 435 transitions, 5731 flow [2024-06-27 22:37:20,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:20,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:20,793 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 22:37:20,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 22:37:20,793 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:20,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:20,794 INFO L85 PathProgramCache]: Analyzing trace with hash 992621768, now seen corresponding path program 16 times [2024-06-27 22:37:20,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:20,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625466268] [2024-06-27 22:37:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:20,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:22,240 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 22:37:22,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:22,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625466268] [2024-06-27 22:37:22,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625466268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:22,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:22,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:22,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964793429] [2024-06-27 22:37:22,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:22,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:22,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:22,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:22,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:22,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:37:22,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 435 transitions, 5731 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:22,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:22,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:37:22,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:23,379 INFO L124 PetriNetUnfolderBase]: 1736/3241 cut-off events. [2024-06-27 22:37:23,379 INFO L125 PetriNetUnfolderBase]: For 210379/210379 co-relation queries the response was YES. [2024-06-27 22:37:23,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21331 conditions, 3241 events. 1736/3241 cut-off events. For 210379/210379 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 22503 event pairs, 436 based on Foata normal form. 2/3087 useless extension candidates. Maximal degree in co-relation 21141. Up to 2814 conditions per place. [2024-06-27 22:37:23,422 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 400 selfloop transitions, 58 changer transitions 0/468 dead transitions. [2024-06-27 22:37:23,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 468 transitions, 7351 flow [2024-06-27 22:37:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:23,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:37:23,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:37:23,423 INFO L175 Difference]: Start difference. First operand has 377 places, 435 transitions, 5731 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:37:23,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 468 transitions, 7351 flow [2024-06-27 22:37:25,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 468 transitions, 7021 flow, removed 69 selfloop flow, removed 10 redundant places. [2024-06-27 22:37:25,538 INFO L231 Difference]: Finished difference. Result has 379 places, 447 transitions, 5936 flow [2024-06-27 22:37:25,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5423, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5936, PETRI_PLACES=379, PETRI_TRANSITIONS=447} [2024-06-27 22:37:25,552 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 337 predicate places. [2024-06-27 22:37:25,552 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 447 transitions, 5936 flow [2024-06-27 22:37:25,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:25,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:25,552 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 22:37:25,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 22:37:25,553 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:25,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:25,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2094812208, now seen corresponding path program 17 times [2024-06-27 22:37:25,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:25,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501583712] [2024-06-27 22:37:25,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:25,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:27,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:27,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:27,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501583712] [2024-06-27 22:37:27,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501583712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:27,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:27,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:27,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163335819] [2024-06-27 22:37:27,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:27,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:27,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:27,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:27,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:27,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:37:27,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 447 transitions, 5936 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:27,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:27,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:37:27,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:28,188 INFO L124 PetriNetUnfolderBase]: 1733/3236 cut-off events. [2024-06-27 22:37:28,189 INFO L125 PetriNetUnfolderBase]: For 185947/185947 co-relation queries the response was YES. [2024-06-27 22:37:28,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20708 conditions, 3236 events. 1733/3236 cut-off events. For 185947/185947 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 22447 event pairs, 452 based on Foata normal form. 2/3079 useless extension candidates. Maximal degree in co-relation 20518. Up to 2884 conditions per place. [2024-06-27 22:37:28,237 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 406 selfloop transitions, 49 changer transitions 0/465 dead transitions. [2024-06-27 22:37:28,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 465 transitions, 6912 flow [2024-06-27 22:37:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:37:28,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 22:37:28,238 INFO L175 Difference]: Start difference. First operand has 379 places, 447 transitions, 5936 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:37:28,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 465 transitions, 6912 flow [2024-06-27 22:37:30,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 465 transitions, 6627 flow, removed 122 selfloop flow, removed 6 redundant places. [2024-06-27 22:37:30,511 INFO L231 Difference]: Finished difference. Result has 384 places, 447 transitions, 5760 flow [2024-06-27 22:37:30,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5651, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5760, PETRI_PLACES=384, PETRI_TRANSITIONS=447} [2024-06-27 22:37:30,512 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 342 predicate places. [2024-06-27 22:37:30,512 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 447 transitions, 5760 flow [2024-06-27 22:37:30,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:30,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:30,512 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 22:37:30,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 22:37:30,512 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:30,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:30,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2100526128, now seen corresponding path program 18 times [2024-06-27 22:37:30,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:30,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244150052] [2024-06-27 22:37:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:30,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:31,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:31,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244150052] [2024-06-27 22:37:31,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244150052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:31,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:31,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:31,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184605845] [2024-06-27 22:37:31,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:31,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:31,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:31,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:31,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:32,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:37:32,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 447 transitions, 5760 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:32,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:32,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:37:32,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:33,103 INFO L124 PetriNetUnfolderBase]: 1760/3285 cut-off events. [2024-06-27 22:37:33,104 INFO L125 PetriNetUnfolderBase]: For 183960/183960 co-relation queries the response was YES. [2024-06-27 22:37:33,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20886 conditions, 3285 events. 1760/3285 cut-off events. For 183960/183960 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 22872 event pairs, 435 based on Foata normal form. 2/3134 useless extension candidates. Maximal degree in co-relation 20694. Up to 2746 conditions per place. [2024-06-27 22:37:33,152 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 395 selfloop transitions, 70 changer transitions 0/475 dead transitions. [2024-06-27 22:37:33,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 475 transitions, 6950 flow [2024-06-27 22:37:33,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:33,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:33,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:37:33,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46172248803827753 [2024-06-27 22:37:33,154 INFO L175 Difference]: Start difference. First operand has 384 places, 447 transitions, 5760 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:37:33,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 475 transitions, 6950 flow [2024-06-27 22:37:34,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 475 transitions, 6823 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 22:37:34,743 INFO L231 Difference]: Finished difference. Result has 385 places, 453 transitions, 5974 flow [2024-06-27 22:37:34,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5633, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5974, PETRI_PLACES=385, PETRI_TRANSITIONS=453} [2024-06-27 22:37:34,744 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 343 predicate places. [2024-06-27 22:37:34,744 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 453 transitions, 5974 flow [2024-06-27 22:37:34,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:34,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:34,745 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 22:37:34,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 22:37:34,745 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:34,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:34,745 INFO L85 PathProgramCache]: Analyzing trace with hash -579696752, now seen corresponding path program 19 times [2024-06-27 22:37:34,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:34,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885111121] [2024-06-27 22:37:34,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:34,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:36,055 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 22:37:36,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:36,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885111121] [2024-06-27 22:37:36,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885111121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:36,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:36,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:36,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609006365] [2024-06-27 22:37:36,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:36,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:36,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:36,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:36,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:36,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:37:36,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 453 transitions, 5974 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:36,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:36,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:37:36,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:37,226 INFO L124 PetriNetUnfolderBase]: 1793/3345 cut-off events. [2024-06-27 22:37:37,226 INFO L125 PetriNetUnfolderBase]: For 192308/192308 co-relation queries the response was YES. [2024-06-27 22:37:37,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21559 conditions, 3345 events. 1793/3345 cut-off events. For 192308/192308 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 23422 event pairs, 421 based on Foata normal form. 2/3184 useless extension candidates. Maximal degree in co-relation 21366. Up to 2852 conditions per place. [2024-06-27 22:37:37,275 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 420 selfloop transitions, 56 changer transitions 0/486 dead transitions. [2024-06-27 22:37:37,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 486 transitions, 7237 flow [2024-06-27 22:37:37,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:37:37,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45933014354066987 [2024-06-27 22:37:37,276 INFO L175 Difference]: Start difference. First operand has 385 places, 453 transitions, 5974 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:37:37,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 486 transitions, 7237 flow [2024-06-27 22:37:38,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 486 transitions, 6976 flow, removed 65 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:38,874 INFO L231 Difference]: Finished difference. Result has 387 places, 461 transitions, 6069 flow [2024-06-27 22:37:38,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5713, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6069, PETRI_PLACES=387, PETRI_TRANSITIONS=461} [2024-06-27 22:37:38,875 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 345 predicate places. [2024-06-27 22:37:38,875 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 461 transitions, 6069 flow [2024-06-27 22:37:38,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:38,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:38,875 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 22:37:38,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 22:37:38,875 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:38,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:38,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2036920336, now seen corresponding path program 20 times [2024-06-27 22:37:38,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:38,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028803376] [2024-06-27 22:37:38,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:38,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:40,324 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 22:37:40,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:40,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028803376] [2024-06-27 22:37:40,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028803376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:40,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:40,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:40,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036260152] [2024-06-27 22:37:40,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:40,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:40,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:40,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:40,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:40,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:37:40,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 461 transitions, 6069 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:40,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:40,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:37:40,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:41,421 INFO L124 PetriNetUnfolderBase]: 1813/3383 cut-off events. [2024-06-27 22:37:41,421 INFO L125 PetriNetUnfolderBase]: For 197315/197315 co-relation queries the response was YES. [2024-06-27 22:37:41,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21828 conditions, 3383 events. 1813/3383 cut-off events. For 197315/197315 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 23694 event pairs, 486 based on Foata normal form. 2/3222 useless extension candidates. Maximal degree in co-relation 21634. Up to 2981 conditions per place. [2024-06-27 22:37:41,470 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 396 selfloop transitions, 77 changer transitions 0/483 dead transitions. [2024-06-27 22:37:41,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 483 transitions, 7247 flow [2024-06-27 22:37:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 22:37:41,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-06-27 22:37:41,472 INFO L175 Difference]: Start difference. First operand has 387 places, 461 transitions, 6069 flow. Second operand 10 states and 177 transitions. [2024-06-27 22:37:41,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 483 transitions, 7247 flow [2024-06-27 22:37:43,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 483 transitions, 6989 flow, removed 79 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:43,132 INFO L231 Difference]: Finished difference. Result has 388 places, 465 transitions, 6145 flow [2024-06-27 22:37:43,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5811, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6145, PETRI_PLACES=388, PETRI_TRANSITIONS=465} [2024-06-27 22:37:43,132 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 346 predicate places. [2024-06-27 22:37:43,132 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 465 transitions, 6145 flow [2024-06-27 22:37:43,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:43,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:43,133 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 22:37:43,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 22:37:43,133 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:43,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:43,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1780419826, now seen corresponding path program 21 times [2024-06-27 22:37:43,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:43,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578448121] [2024-06-27 22:37:43,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:43,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:44,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:44,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578448121] [2024-06-27 22:37:44,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578448121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:44,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:44,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:44,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003454788] [2024-06-27 22:37:44,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:44,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:44,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:44,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:44,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:44,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:37:44,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 465 transitions, 6145 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:44,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:44,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:37:44,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:45,754 INFO L124 PetriNetUnfolderBase]: 1833/3420 cut-off events. [2024-06-27 22:37:45,755 INFO L125 PetriNetUnfolderBase]: For 201106/201106 co-relation queries the response was YES. [2024-06-27 22:37:45,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22050 conditions, 3420 events. 1833/3420 cut-off events. For 201106/201106 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 24095 event pairs, 494 based on Foata normal form. 2/3258 useless extension candidates. Maximal degree in co-relation 21855. Up to 3017 conditions per place. [2024-06-27 22:37:45,796 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 405 selfloop transitions, 72 changer transitions 0/487 dead transitions. [2024-06-27 22:37:45,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 487 transitions, 7335 flow [2024-06-27 22:37:45,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:45,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 22:37:45,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215311004784686 [2024-06-27 22:37:45,797 INFO L175 Difference]: Start difference. First operand has 388 places, 465 transitions, 6145 flow. Second operand 11 states and 189 transitions. [2024-06-27 22:37:45,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 487 transitions, 7335 flow [2024-06-27 22:37:47,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 487 transitions, 7041 flow, removed 73 selfloop flow, removed 8 redundant places. [2024-06-27 22:37:47,497 INFO L231 Difference]: Finished difference. Result has 391 places, 469 transitions, 6179 flow [2024-06-27 22:37:47,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5851, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6179, PETRI_PLACES=391, PETRI_TRANSITIONS=469} [2024-06-27 22:37:47,497 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 349 predicate places. [2024-06-27 22:37:47,497 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 469 transitions, 6179 flow [2024-06-27 22:37:47,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:47,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:47,498 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 22:37:47,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 22:37:47,498 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:47,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1780212436, now seen corresponding path program 22 times [2024-06-27 22:37:47,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:47,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960576170] [2024-06-27 22:37:47,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:47,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:48,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:48,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960576170] [2024-06-27 22:37:48,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960576170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:48,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:48,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:48,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223342560] [2024-06-27 22:37:48,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:48,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:48,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:48,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:48,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:49,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:37:49,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 469 transitions, 6179 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:49,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:49,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:37:49,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:50,211 INFO L124 PetriNetUnfolderBase]: 1853/3456 cut-off events. [2024-06-27 22:37:50,212 INFO L125 PetriNetUnfolderBase]: For 204649/204649 co-relation queries the response was YES. [2024-06-27 22:37:50,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22265 conditions, 3456 events. 1853/3456 cut-off events. For 204649/204649 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 24418 event pairs, 494 based on Foata normal form. 2/3298 useless extension candidates. Maximal degree in co-relation 22069. Up to 2977 conditions per place. [2024-06-27 22:37:50,264 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 401 selfloop transitions, 82 changer transitions 0/493 dead transitions. [2024-06-27 22:37:50,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 493 transitions, 7393 flow [2024-06-27 22:37:50,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:37:50,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:37:50,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:37:50,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45933014354066987 [2024-06-27 22:37:50,266 INFO L175 Difference]: Start difference. First operand has 391 places, 469 transitions, 6179 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:37:50,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 493 transitions, 7393 flow [2024-06-27 22:37:52,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 493 transitions, 7105 flow, removed 75 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:52,288 INFO L231 Difference]: Finished difference. Result has 393 places, 473 transitions, 6243 flow [2024-06-27 22:37:52,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5891, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6243, PETRI_PLACES=393, PETRI_TRANSITIONS=473} [2024-06-27 22:37:52,289 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 351 predicate places. [2024-06-27 22:37:52,289 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 473 transitions, 6243 flow [2024-06-27 22:37:52,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:52,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:52,289 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 22:37:52,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 22:37:52,289 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:52,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:52,290 INFO L85 PathProgramCache]: Analyzing trace with hash -450985676, now seen corresponding path program 23 times [2024-06-27 22:37:52,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:52,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444943230] [2024-06-27 22:37:52,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:52,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:54,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:54,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:54,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444943230] [2024-06-27 22:37:54,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444943230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:54,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:54,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:54,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137421284] [2024-06-27 22:37:54,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:54,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:54,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:54,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:54,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:54,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:37:54,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 473 transitions, 6243 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:54,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:54,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:37:54,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:55,586 INFO L124 PetriNetUnfolderBase]: 1896/3535 cut-off events. [2024-06-27 22:37:55,586 INFO L125 PetriNetUnfolderBase]: For 232642/232642 co-relation queries the response was YES. [2024-06-27 22:37:55,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23273 conditions, 3535 events. 1896/3535 cut-off events. For 232642/232642 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 25113 event pairs, 509 based on Foata normal form. 2/3373 useless extension candidates. Maximal degree in co-relation 23076. Up to 3073 conditions per place. [2024-06-27 22:37:55,641 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 417 selfloop transitions, 75 changer transitions 0/502 dead transitions. [2024-06-27 22:37:55,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 502 transitions, 7929 flow [2024-06-27 22:37:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:55,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:55,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:37:55,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 22:37:55,642 INFO L175 Difference]: Start difference. First operand has 393 places, 473 transitions, 6243 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:37:55,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 502 transitions, 7929 flow [2024-06-27 22:37:57,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 502 transitions, 7617 flow, removed 77 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:57,938 INFO L231 Difference]: Finished difference. Result has 395 places, 481 transitions, 6465 flow [2024-06-27 22:37:57,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5931, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6465, PETRI_PLACES=395, PETRI_TRANSITIONS=481} [2024-06-27 22:37:57,939 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 353 predicate places. [2024-06-27 22:37:57,939 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 481 transitions, 6465 flow [2024-06-27 22:37:57,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:57,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:57,939 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 22:37:57,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 22:37:57,940 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:57,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:57,940 INFO L85 PathProgramCache]: Analyzing trace with hash -989750338, now seen corresponding path program 24 times [2024-06-27 22:37:57,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:57,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930389289] [2024-06-27 22:37:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:57,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:37:59,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:59,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930389289] [2024-06-27 22:37:59,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930389289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:59,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:59,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:37:59,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159401970] [2024-06-27 22:37:59,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:59,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:37:59,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:59,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:37:59,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:37:59,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:37:59,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 481 transitions, 6465 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:59,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:59,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:37:59,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:00,930 INFO L124 PetriNetUnfolderBase]: 1893/3530 cut-off events. [2024-06-27 22:38:00,930 INFO L125 PetriNetUnfolderBase]: For 213385/213385 co-relation queries the response was YES. [2024-06-27 22:38:00,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22799 conditions, 3530 events. 1893/3530 cut-off events. For 213385/213385 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 25007 event pairs, 520 based on Foata normal form. 2/3366 useless extension candidates. Maximal degree in co-relation 22600. Up to 3125 conditions per place. [2024-06-27 22:38:00,977 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 420 selfloop transitions, 69 changer transitions 0/499 dead transitions. [2024-06-27 22:38:00,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 499 transitions, 7511 flow [2024-06-27 22:38:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:38:00,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:38:00,978 INFO L175 Difference]: Start difference. First operand has 395 places, 481 transitions, 6465 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:38:00,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 499 transitions, 7511 flow [2024-06-27 22:38:02,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 499 transitions, 7126 flow, removed 152 selfloop flow, removed 6 redundant places. [2024-06-27 22:38:02,930 INFO L231 Difference]: Finished difference. Result has 400 places, 481 transitions, 6226 flow [2024-06-27 22:38:02,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6080, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6226, PETRI_PLACES=400, PETRI_TRANSITIONS=481} [2024-06-27 22:38:02,936 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 358 predicate places. [2024-06-27 22:38:02,936 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 481 transitions, 6226 flow [2024-06-27 22:38:02,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:02,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:02,936 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 22:38:02,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 22:38:02,936 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:02,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:02,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1762285618, now seen corresponding path program 25 times [2024-06-27 22:38:02,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:02,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381033127] [2024-06-27 22:38:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:02,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:04,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:04,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:04,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381033127] [2024-06-27 22:38:04,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381033127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:04,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:04,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:04,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121945041] [2024-06-27 22:38:04,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:04,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:04,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:04,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:04,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:04,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:38:04,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 481 transitions, 6226 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:04,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:04,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:38:04,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:05,658 INFO L124 PetriNetUnfolderBase]: 1913/3567 cut-off events. [2024-06-27 22:38:05,658 INFO L125 PetriNetUnfolderBase]: For 210360/210360 co-relation queries the response was YES. [2024-06-27 22:38:05,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22835 conditions, 3567 events. 1913/3567 cut-off events. For 210360/210360 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 25389 event pairs, 502 based on Foata normal form. 2/3412 useless extension candidates. Maximal degree in co-relation 22634. Up to 2923 conditions per place. [2024-06-27 22:38:05,715 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 400 selfloop transitions, 97 changer transitions 0/507 dead transitions. [2024-06-27 22:38:05,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 507 transitions, 7484 flow [2024-06-27 22:38:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:05,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:38:05,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-27 22:38:05,717 INFO L175 Difference]: Start difference. First operand has 400 places, 481 transitions, 6226 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:38:05,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 507 transitions, 7484 flow [2024-06-27 22:38:08,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 507 transitions, 7336 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 22:38:08,172 INFO L231 Difference]: Finished difference. Result has 400 places, 485 transitions, 6468 flow [2024-06-27 22:38:08,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6078, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6468, PETRI_PLACES=400, PETRI_TRANSITIONS=485} [2024-06-27 22:38:08,172 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 358 predicate places. [2024-06-27 22:38:08,172 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 485 transitions, 6468 flow [2024-06-27 22:38:08,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:08,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:08,173 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 22:38:08,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 22:38:08,173 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:08,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:08,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1737081776, now seen corresponding path program 26 times [2024-06-27 22:38:08,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:08,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264496799] [2024-06-27 22:38:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:08,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:09,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:09,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264496799] [2024-06-27 22:38:09,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264496799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:09,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:09,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:09,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344867357] [2024-06-27 22:38:09,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:09,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:09,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:09,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:09,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:09,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:38:09,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 485 transitions, 6468 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:09,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:09,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:38:09,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:10,968 INFO L124 PetriNetUnfolderBase]: 1926/3589 cut-off events. [2024-06-27 22:38:10,969 INFO L125 PetriNetUnfolderBase]: For 220882/220882 co-relation queries the response was YES. [2024-06-27 22:38:11,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23431 conditions, 3589 events. 1926/3589 cut-off events. For 220882/220882 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 25560 event pairs, 531 based on Foata normal form. 2/3421 useless extension candidates. Maximal degree in co-relation 23229. Up to 3018 conditions per place. [2024-06-27 22:38:11,025 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 359 selfloop transitions, 136 changer transitions 0/505 dead transitions. [2024-06-27 22:38:11,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 505 transitions, 7702 flow [2024-06-27 22:38:11,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:11,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:11,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:38:11,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-06-27 22:38:11,027 INFO L175 Difference]: Start difference. First operand has 400 places, 485 transitions, 6468 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:38:11,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 505 transitions, 7702 flow [2024-06-27 22:38:13,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 505 transitions, 7352 flow, removed 81 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:13,532 INFO L231 Difference]: Finished difference. Result has 402 places, 487 transitions, 6573 flow [2024-06-27 22:38:13,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6118, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6573, PETRI_PLACES=402, PETRI_TRANSITIONS=487} [2024-06-27 22:38:13,533 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 360 predicate places. [2024-06-27 22:38:13,533 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 487 transitions, 6573 flow [2024-06-27 22:38:13,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:13,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:13,533 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 22:38:13,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 22:38:13,533 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:13,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:13,534 INFO L85 PathProgramCache]: Analyzing trace with hash -411857822, now seen corresponding path program 27 times [2024-06-27 22:38:13,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:13,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679716273] [2024-06-27 22:38:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:13,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:14,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:14,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679716273] [2024-06-27 22:38:14,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679716273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:14,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:14,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:14,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018481593] [2024-06-27 22:38:14,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:14,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:14,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:14,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:14,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:15,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:38:15,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 487 transitions, 6573 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:15,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:15,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:38:15,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:16,147 INFO L124 PetriNetUnfolderBase]: 1939/3613 cut-off events. [2024-06-27 22:38:16,147 INFO L125 PetriNetUnfolderBase]: For 225575/225575 co-relation queries the response was YES. [2024-06-27 22:38:16,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23664 conditions, 3613 events. 1939/3613 cut-off events. For 225575/225575 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 25791 event pairs, 532 based on Foata normal form. 2/3444 useless extension candidates. Maximal degree in co-relation 23461. Up to 3041 conditions per place. [2024-06-27 22:38:16,204 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 379 selfloop transitions, 118 changer transitions 0/507 dead transitions. [2024-06-27 22:38:16,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 507 transitions, 7815 flow [2024-06-27 22:38:16,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:16,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:16,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:38:16,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:38:16,205 INFO L175 Difference]: Start difference. First operand has 402 places, 487 transitions, 6573 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:38:16,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 507 transitions, 7815 flow [2024-06-27 22:38:18,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 507 transitions, 7376 flow, removed 85 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:18,627 INFO L231 Difference]: Finished difference. Result has 404 places, 489 transitions, 6557 flow [2024-06-27 22:38:18,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6134, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6557, PETRI_PLACES=404, PETRI_TRANSITIONS=489} [2024-06-27 22:38:18,627 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 362 predicate places. [2024-06-27 22:38:18,628 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 489 transitions, 6557 flow [2024-06-27 22:38:18,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:18,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:18,628 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 22:38:18,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 22:38:18,628 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:18,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:18,629 INFO L85 PathProgramCache]: Analyzing trace with hash -668560142, now seen corresponding path program 28 times [2024-06-27 22:38:18,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:18,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482976419] [2024-06-27 22:38:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:18,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:20,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:20,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482976419] [2024-06-27 22:38:20,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482976419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:20,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:20,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:20,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141112987] [2024-06-27 22:38:20,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:20,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:20,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:20,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:20,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:20,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:38:20,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 489 transitions, 6557 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:20,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:20,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:38:20,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:21,610 INFO L124 PetriNetUnfolderBase]: 1952/3636 cut-off events. [2024-06-27 22:38:21,610 INFO L125 PetriNetUnfolderBase]: For 230430/230430 co-relation queries the response was YES. [2024-06-27 22:38:21,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23766 conditions, 3636 events. 1952/3636 cut-off events. For 230430/230430 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 26024 event pairs, 539 based on Foata normal form. 2/3467 useless extension candidates. Maximal degree in co-relation 23562. Up to 3064 conditions per place. [2024-06-27 22:38:21,665 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 380 selfloop transitions, 119 changer transitions 0/509 dead transitions. [2024-06-27 22:38:21,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 509 transitions, 7807 flow [2024-06-27 22:38:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:38:21,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 22:38:21,667 INFO L175 Difference]: Start difference. First operand has 404 places, 489 transitions, 6557 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:38:21,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 509 transitions, 7807 flow [2024-06-27 22:38:23,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 509 transitions, 7400 flow, removed 87 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:23,744 INFO L231 Difference]: Finished difference. Result has 406 places, 491 transitions, 6579 flow [2024-06-27 22:38:23,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6150, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6579, PETRI_PLACES=406, PETRI_TRANSITIONS=491} [2024-06-27 22:38:23,744 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 364 predicate places. [2024-06-27 22:38:23,745 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 491 transitions, 6579 flow [2024-06-27 22:38:23,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:23,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:23,745 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 22:38:23,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 22:38:23,745 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:23,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:23,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1483928310, now seen corresponding path program 29 times [2024-06-27 22:38:23,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:23,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101479371] [2024-06-27 22:38:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:23,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:25,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:25,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101479371] [2024-06-27 22:38:25,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101479371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:25,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:25,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:25,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410569972] [2024-06-27 22:38:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:25,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:25,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:25,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:25,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:25,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:38:25,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 491 transitions, 6579 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:25,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:25,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:38:25,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:26,402 INFO L124 PetriNetUnfolderBase]: 1965/3657 cut-off events. [2024-06-27 22:38:26,402 INFO L125 PetriNetUnfolderBase]: For 234405/234405 co-relation queries the response was YES. [2024-06-27 22:38:26,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23912 conditions, 3657 events. 1965/3657 cut-off events. For 234405/234405 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 26132 event pairs, 533 based on Foata normal form. 2/3490 useless extension candidates. Maximal degree in co-relation 23707. Up to 3021 conditions per place. [2024-06-27 22:38:26,460 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 377 selfloop transitions, 126 changer transitions 0/513 dead transitions. [2024-06-27 22:38:26,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 513 transitions, 7849 flow [2024-06-27 22:38:26,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:38:26,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-06-27 22:38:26,467 INFO L175 Difference]: Start difference. First operand has 406 places, 491 transitions, 6579 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:38:26,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 513 transitions, 7849 flow [2024-06-27 22:38:29,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 513 transitions, 7436 flow, removed 89 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:29,223 INFO L231 Difference]: Finished difference. Result has 408 places, 493 transitions, 6613 flow [2024-06-27 22:38:29,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6166, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6613, PETRI_PLACES=408, PETRI_TRANSITIONS=493} [2024-06-27 22:38:29,237 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 366 predicate places. [2024-06-27 22:38:29,237 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 493 transitions, 6613 flow [2024-06-27 22:38:29,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:29,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:29,237 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 22:38:29,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 22:38:29,237 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:29,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:29,238 INFO L85 PathProgramCache]: Analyzing trace with hash -775747278, now seen corresponding path program 30 times [2024-06-27 22:38:29,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:29,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875102868] [2024-06-27 22:38:29,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:29,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:30,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:30,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875102868] [2024-06-27 22:38:30,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875102868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:30,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:30,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:30,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013053532] [2024-06-27 22:38:30,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:30,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:30,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:30,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:30,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:30,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:38:30,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 493 transitions, 6613 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:30,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:30,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:38:30,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:32,153 INFO L124 PetriNetUnfolderBase]: 1978/3680 cut-off events. [2024-06-27 22:38:32,153 INFO L125 PetriNetUnfolderBase]: For 239044/239044 co-relation queries the response was YES. [2024-06-27 22:38:32,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24101 conditions, 3680 events. 1978/3680 cut-off events. For 239044/239044 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 26351 event pairs, 547 based on Foata normal form. 2/3510 useless extension candidates. Maximal degree in co-relation 23895. Up to 3110 conditions per place. [2024-06-27 22:38:32,204 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 397 selfloop transitions, 106 changer transitions 0/513 dead transitions. [2024-06-27 22:38:32,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 513 transitions, 7879 flow [2024-06-27 22:38:32,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 22:38:32,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-06-27 22:38:32,205 INFO L175 Difference]: Start difference. First operand has 408 places, 493 transitions, 6613 flow. Second operand 10 states and 182 transitions. [2024-06-27 22:38:32,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 513 transitions, 7879 flow [2024-06-27 22:38:34,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 513 transitions, 7448 flow, removed 91 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:34,700 INFO L231 Difference]: Finished difference. Result has 410 places, 495 transitions, 6593 flow [2024-06-27 22:38:34,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6182, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6593, PETRI_PLACES=410, PETRI_TRANSITIONS=495} [2024-06-27 22:38:34,701 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 368 predicate places. [2024-06-27 22:38:34,701 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 495 transitions, 6593 flow [2024-06-27 22:38:34,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:34,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:34,701 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 22:38:34,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 22:38:34,701 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:34,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:34,702 INFO L85 PathProgramCache]: Analyzing trace with hash 942983684, now seen corresponding path program 31 times [2024-06-27 22:38:34,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:34,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125595083] [2024-06-27 22:38:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:34,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:36,240 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 22:38:36,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:36,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125595083] [2024-06-27 22:38:36,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125595083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:36,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:36,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:36,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995245661] [2024-06-27 22:38:36,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:36,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:36,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:36,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:36,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:36,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:38:36,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 495 transitions, 6593 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:36,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:36,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:38:36,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:37,519 INFO L124 PetriNetUnfolderBase]: 2007/3735 cut-off events. [2024-06-27 22:38:37,519 INFO L125 PetriNetUnfolderBase]: For 272369/272369 co-relation queries the response was YES. [2024-06-27 22:38:37,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24974 conditions, 3735 events. 2007/3735 cut-off events. For 272369/272369 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 26853 event pairs, 549 based on Foata normal form. 2/3566 useless extension candidates. Maximal degree in co-relation 24767. Up to 3107 conditions per place. [2024-06-27 22:38:37,581 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 399 selfloop transitions, 111 changer transitions 0/520 dead transitions. [2024-06-27 22:38:37,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 520 transitions, 8369 flow [2024-06-27 22:38:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:37,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 22:38:37,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-27 22:38:37,582 INFO L175 Difference]: Start difference. First operand has 410 places, 495 transitions, 6593 flow. Second operand 10 states and 186 transitions. [2024-06-27 22:38:37,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 520 transitions, 8369 flow [2024-06-27 22:38:40,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 520 transitions, 7974 flow, removed 93 selfloop flow, removed 8 redundant places. [2024-06-27 22:38:40,695 INFO L231 Difference]: Finished difference. Result has 412 places, 499 transitions, 6817 flow [2024-06-27 22:38:40,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6198, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6817, PETRI_PLACES=412, PETRI_TRANSITIONS=499} [2024-06-27 22:38:40,697 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 370 predicate places. [2024-06-27 22:38:40,697 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 499 transitions, 6817 flow [2024-06-27 22:38:40,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:40,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:40,697 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 22:38:40,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 22:38:40,697 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:40,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash -519246768, now seen corresponding path program 32 times [2024-06-27 22:38:40,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:40,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276998601] [2024-06-27 22:38:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:40,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:42,106 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 22:38:42,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:42,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276998601] [2024-06-27 22:38:42,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276998601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:42,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:42,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:42,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982388107] [2024-06-27 22:38:42,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:42,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:42,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:42,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:42,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:42,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:38:42,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 499 transitions, 6817 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:42,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:42,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:38:42,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:43,432 INFO L124 PetriNetUnfolderBase]: 2004/3730 cut-off events. [2024-06-27 22:38:43,432 INFO L125 PetriNetUnfolderBase]: For 248044/248044 co-relation queries the response was YES. [2024-06-27 22:38:43,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24347 conditions, 3730 events. 2004/3730 cut-off events. For 248044/248044 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 26826 event pairs, 555 based on Foata normal form. 2/3559 useless extension candidates. Maximal degree in co-relation 24139. Up to 3156 conditions per place. [2024-06-27 22:38:43,493 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 400 selfloop transitions, 107 changer transitions 0/517 dead transitions. [2024-06-27 22:38:43,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 517 transitions, 7901 flow [2024-06-27 22:38:43,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:43,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:43,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 22:38:43,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 22:38:43,495 INFO L175 Difference]: Start difference. First operand has 412 places, 499 transitions, 6817 flow. Second operand 10 states and 181 transitions. [2024-06-27 22:38:43,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 517 transitions, 7901 flow [2024-06-27 22:38:46,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 517 transitions, 7403 flow, removed 187 selfloop flow, removed 6 redundant places. [2024-06-27 22:38:46,518 INFO L231 Difference]: Finished difference. Result has 416 places, 499 transitions, 6538 flow [2024-06-27 22:38:46,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6319, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6538, PETRI_PLACES=416, PETRI_TRANSITIONS=499} [2024-06-27 22:38:46,519 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 374 predicate places. [2024-06-27 22:38:46,519 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 499 transitions, 6538 flow [2024-06-27 22:38:46,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:46,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:46,519 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 22:38:46,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 22:38:46,520 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:46,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:46,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1748607926, now seen corresponding path program 33 times [2024-06-27 22:38:46,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:46,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172762378] [2024-06-27 22:38:46,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:46,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:48,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:48,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:48,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172762378] [2024-06-27 22:38:48,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172762378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:48,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:48,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:48,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126572357] [2024-06-27 22:38:48,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:48,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:48,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:48,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:48,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:48,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:38:48,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 499 transitions, 6538 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:48,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:48,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:38:48,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:49,444 INFO L124 PetriNetUnfolderBase]: 2033/3782 cut-off events. [2024-06-27 22:38:49,444 INFO L125 PetriNetUnfolderBase]: For 271924/271924 co-relation queries the response was YES. [2024-06-27 22:38:49,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25141 conditions, 3782 events. 2033/3782 cut-off events. For 271924/271924 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 27285 event pairs, 557 based on Foata normal form. 2/3611 useless extension candidates. Maximal degree in co-relation 24931. Up to 3168 conditions per place. [2024-06-27 22:38:49,503 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 402 selfloop transitions, 112 changer transitions 0/524 dead transitions. [2024-06-27 22:38:49,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 524 transitions, 8334 flow [2024-06-27 22:38:49,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:49,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:49,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 22:38:49,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2024-06-27 22:38:49,505 INFO L175 Difference]: Start difference. First operand has 416 places, 499 transitions, 6538 flow. Second operand 11 states and 196 transitions. [2024-06-27 22:38:49,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 524 transitions, 8334 flow [2024-06-27 22:38:52,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 524 transitions, 8108 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 22:38:52,243 INFO L231 Difference]: Finished difference. Result has 418 places, 503 transitions, 6941 flow [2024-06-27 22:38:52,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6312, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6941, PETRI_PLACES=418, PETRI_TRANSITIONS=503} [2024-06-27 22:38:52,243 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 376 predicate places. [2024-06-27 22:38:52,243 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 503 transitions, 6941 flow [2024-06-27 22:38:52,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:52,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:52,244 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 22:38:52,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 22:38:52,244 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:52,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:52,244 INFO L85 PathProgramCache]: Analyzing trace with hash 749251664, now seen corresponding path program 34 times [2024-06-27 22:38:52,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:52,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826566086] [2024-06-27 22:38:52,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:52,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:53,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:53,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826566086] [2024-06-27 22:38:53,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826566086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:53,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:53,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:53,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544261173] [2024-06-27 22:38:53,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:53,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:53,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:53,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:53,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:53,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:38:53,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 503 transitions, 6941 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:53,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:53,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:38:53,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:55,044 INFO L124 PetriNetUnfolderBase]: 2030/3774 cut-off events. [2024-06-27 22:38:55,044 INFO L125 PetriNetUnfolderBase]: For 254869/254869 co-relation queries the response was YES. [2024-06-27 22:38:55,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24851 conditions, 3774 events. 2030/3774 cut-off events. For 254869/254869 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 27151 event pairs, 563 based on Foata normal form. 2/3602 useless extension candidates. Maximal degree in co-relation 24640. Up to 3202 conditions per place. [2024-06-27 22:38:55,109 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 402 selfloop transitions, 109 changer transitions 0/521 dead transitions. [2024-06-27 22:38:55,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 521 transitions, 8033 flow [2024-06-27 22:38:55,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:38:55,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:38:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 22:38:55,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:38:55,111 INFO L175 Difference]: Start difference. First operand has 418 places, 503 transitions, 6941 flow. Second operand 10 states and 180 transitions. [2024-06-27 22:38:55,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 521 transitions, 8033 flow [2024-06-27 22:38:57,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 521 transitions, 7517 flow, removed 193 selfloop flow, removed 7 redundant places. [2024-06-27 22:38:57,586 INFO L231 Difference]: Finished difference. Result has 421 places, 503 transitions, 6648 flow [2024-06-27 22:38:57,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6425, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6648, PETRI_PLACES=421, PETRI_TRANSITIONS=503} [2024-06-27 22:38:57,586 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 379 predicate places. [2024-06-27 22:38:57,587 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 503 transitions, 6648 flow [2024-06-27 22:38:57,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:57,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:57,587 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 22:38:57,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 22:38:57,587 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:57,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash 743537744, now seen corresponding path program 35 times [2024-06-27 22:38:57,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:57,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754437] [2024-06-27 22:38:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:57,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:59,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:59,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754437] [2024-06-27 22:38:59,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:59,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:59,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:38:59,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56448718] [2024-06-27 22:38:59,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:59,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:38:59,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:59,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:38:59,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:38:59,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:38:59,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 503 transitions, 6648 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:59,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:59,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:38:59,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:00,450 INFO L124 PetriNetUnfolderBase]: 2027/3772 cut-off events. [2024-06-27 22:39:00,450 INFO L125 PetriNetUnfolderBase]: For 218320/218320 co-relation queries the response was YES. [2024-06-27 22:39:00,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23981 conditions, 3772 events. 2027/3772 cut-off events. For 218320/218320 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 27202 event pairs, 548 based on Foata normal form. 2/3609 useless extension candidates. Maximal degree in co-relation 23768. Up to 2957 conditions per place. [2024-06-27 22:39:00,509 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 385 selfloop transitions, 132 changer transitions 0/527 dead transitions. [2024-06-27 22:39:00,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 527 transitions, 7970 flow [2024-06-27 22:39:00,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:00,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-27 22:39:00,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47129186602870815 [2024-06-27 22:39:00,511 INFO L175 Difference]: Start difference. First operand has 421 places, 503 transitions, 6648 flow. Second operand 11 states and 197 transitions. [2024-06-27 22:39:00,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 527 transitions, 7970 flow [2024-06-27 22:39:02,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 527 transitions, 7747 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 22:39:02,727 INFO L231 Difference]: Finished difference. Result has 423 places, 505 transitions, 6900 flow [2024-06-27 22:39:02,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6425, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6900, PETRI_PLACES=423, PETRI_TRANSITIONS=505} [2024-06-27 22:39:02,728 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 381 predicate places. [2024-06-27 22:39:02,728 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 505 transitions, 6900 flow [2024-06-27 22:39:02,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:02,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:02,728 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 22:39:02,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 22:39:02,729 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:02,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:02,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1660495438, now seen corresponding path program 7 times [2024-06-27 22:39:02,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:02,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616673177] [2024-06-27 22:39:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:02,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:04,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:04,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616673177] [2024-06-27 22:39:04,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616673177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:04,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:04,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:04,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498293808] [2024-06-27 22:39:04,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:04,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:04,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:04,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:04,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:04,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:39:04,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 505 transitions, 6900 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:04,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:04,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:39:04,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:05,014 INFO L124 PetriNetUnfolderBase]: 1678/3205 cut-off events. [2024-06-27 22:39:05,015 INFO L125 PetriNetUnfolderBase]: For 220570/220579 co-relation queries the response was YES. [2024-06-27 22:39:05,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21342 conditions, 3205 events. 1678/3205 cut-off events. For 220570/220579 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 23340 event pairs, 525 based on Foata normal form. 7/2992 useless extension candidates. Maximal degree in co-relation 21129. Up to 2638 conditions per place. [2024-06-27 22:39:05,062 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 375 selfloop transitions, 129 changer transitions 0/520 dead transitions. [2024-06-27 22:39:05,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 520 transitions, 8390 flow [2024-06-27 22:39:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:05,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:05,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 22:39:05,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-27 22:39:05,063 INFO L175 Difference]: Start difference. First operand has 423 places, 505 transitions, 6900 flow. Second operand 10 states and 194 transitions. [2024-06-27 22:39:05,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 520 transitions, 8390 flow [2024-06-27 22:39:07,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 520 transitions, 7931 flow, removed 99 selfloop flow, removed 9 redundant places. [2024-06-27 22:39:07,269 INFO L231 Difference]: Finished difference. Result has 424 places, 509 transitions, 6868 flow [2024-06-27 22:39:07,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6441, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6868, PETRI_PLACES=424, PETRI_TRANSITIONS=509} [2024-06-27 22:39:07,269 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 382 predicate places. [2024-06-27 22:39:07,269 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 509 transitions, 6868 flow [2024-06-27 22:39:07,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:07,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:07,270 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 22:39:07,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 22:39:07,270 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:07,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:07,270 INFO L85 PathProgramCache]: Analyzing trace with hash 439459386, now seen corresponding path program 8 times [2024-06-27 22:39:07,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:07,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144463795] [2024-06-27 22:39:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:07,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:08,703 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 22:39:08,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:08,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144463795] [2024-06-27 22:39:08,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144463795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:08,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:08,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:08,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045829949] [2024-06-27 22:39:08,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:08,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:08,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:08,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:08,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:08,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:39:08,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 509 transitions, 6868 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:08,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:08,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:39:08,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:10,007 INFO L124 PetriNetUnfolderBase]: 2059/3832 cut-off events. [2024-06-27 22:39:10,008 INFO L125 PetriNetUnfolderBase]: For 233235/233235 co-relation queries the response was YES. [2024-06-27 22:39:10,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24856 conditions, 3832 events. 2059/3832 cut-off events. For 233235/233235 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 27696 event pairs, 758 based on Foata normal form. 1/3651 useless extension candidates. Maximal degree in co-relation 24642. Up to 3496 conditions per place. [2024-06-27 22:39:10,069 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 499 selfloop transitions, 23 changer transitions 0/532 dead transitions. [2024-06-27 22:39:10,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 532 transitions, 8452 flow [2024-06-27 22:39:10,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:10,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 22:39:10,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-06-27 22:39:10,071 INFO L175 Difference]: Start difference. First operand has 424 places, 509 transitions, 6868 flow. Second operand 11 states and 184 transitions. [2024-06-27 22:39:10,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 532 transitions, 8452 flow [2024-06-27 22:39:12,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 532 transitions, 8216 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 22:39:12,822 INFO L231 Difference]: Finished difference. Result has 429 places, 513 transitions, 6855 flow [2024-06-27 22:39:12,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6632, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6855, PETRI_PLACES=429, PETRI_TRANSITIONS=513} [2024-06-27 22:39:12,822 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 387 predicate places. [2024-06-27 22:39:12,823 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 513 transitions, 6855 flow [2024-06-27 22:39:12,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:12,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:12,823 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 22:39:12,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 22:39:12,823 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:12,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:12,824 INFO L85 PathProgramCache]: Analyzing trace with hash 664669008, now seen corresponding path program 9 times [2024-06-27 22:39:12,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:12,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147007105] [2024-06-27 22:39:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:12,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:14,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:14,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147007105] [2024-06-27 22:39:14,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147007105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:14,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:14,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:14,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841319622] [2024-06-27 22:39:14,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:14,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:14,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:14,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:14,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:14,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:39:14,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 513 transitions, 6855 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:14,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:14,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:39:14,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:15,869 INFO L124 PetriNetUnfolderBase]: 2066/3845 cut-off events. [2024-06-27 22:39:15,869 INFO L125 PetriNetUnfolderBase]: For 233785/233785 co-relation queries the response was YES. [2024-06-27 22:39:15,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24905 conditions, 3845 events. 2066/3845 cut-off events. For 233785/233785 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 27806 event pairs, 758 based on Foata normal form. 1/3662 useless extension candidates. Maximal degree in co-relation 24688. Up to 3491 conditions per place. [2024-06-27 22:39:15,936 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 498 selfloop transitions, 28 changer transitions 0/536 dead transitions. [2024-06-27 22:39:15,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 536 transitions, 8377 flow [2024-06-27 22:39:15,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:39:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:39:15,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-27 22:39:15,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2024-06-27 22:39:15,938 INFO L175 Difference]: Start difference. First operand has 429 places, 513 transitions, 6855 flow. Second operand 12 states and 200 transitions. [2024-06-27 22:39:15,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 536 transitions, 8377 flow [2024-06-27 22:39:18,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 536 transitions, 8267 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 22:39:18,993 INFO L231 Difference]: Finished difference. Result has 434 places, 515 transitions, 6898 flow [2024-06-27 22:39:18,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6745, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6898, PETRI_PLACES=434, PETRI_TRANSITIONS=515} [2024-06-27 22:39:18,994 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 392 predicate places. [2024-06-27 22:39:18,994 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 515 transitions, 6898 flow [2024-06-27 22:39:18,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:18,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:18,994 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 22:39:18,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 22:39:18,995 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:18,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:18,995 INFO L85 PathProgramCache]: Analyzing trace with hash 293444628, now seen corresponding path program 10 times [2024-06-27 22:39:18,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:18,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642142432] [2024-06-27 22:39:18,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:18,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:20,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:20,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642142432] [2024-06-27 22:39:20,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642142432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:20,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:20,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:20,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844666668] [2024-06-27 22:39:20,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:20,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:20,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:20,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:20,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:20,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:39:20,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 515 transitions, 6898 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:20,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:20,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:39:20,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:22,020 INFO L124 PetriNetUnfolderBase]: 2064/3839 cut-off events. [2024-06-27 22:39:22,020 INFO L125 PetriNetUnfolderBase]: For 222287/222287 co-relation queries the response was YES. [2024-06-27 22:39:22,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24633 conditions, 3839 events. 2064/3839 cut-off events. For 222287/222287 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 27787 event pairs, 758 based on Foata normal form. 1/3656 useless extension candidates. Maximal degree in co-relation 24414. Up to 3514 conditions per place. [2024-06-27 22:39:22,081 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 503 selfloop transitions, 20 changer transitions 0/533 dead transitions. [2024-06-27 22:39:22,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 533 transitions, 8014 flow [2024-06-27 22:39:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:22,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:22,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:39:22,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43301435406698563 [2024-06-27 22:39:22,083 INFO L175 Difference]: Start difference. First operand has 434 places, 515 transitions, 6898 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:39:22,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 533 transitions, 8014 flow [2024-06-27 22:39:24,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 533 transitions, 7829 flow, removed 66 selfloop flow, removed 10 redundant places. [2024-06-27 22:39:24,669 INFO L231 Difference]: Finished difference. Result has 435 places, 515 transitions, 6758 flow [2024-06-27 22:39:24,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6713, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6758, PETRI_PLACES=435, PETRI_TRANSITIONS=515} [2024-06-27 22:39:24,670 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 393 predicate places. [2024-06-27 22:39:24,670 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 515 transitions, 6758 flow [2024-06-27 22:39:24,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:24,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:24,670 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 22:39:24,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 22:39:24,671 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:24,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:24,671 INFO L85 PathProgramCache]: Analyzing trace with hash -775739342, now seen corresponding path program 11 times [2024-06-27 22:39:24,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:24,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414793596] [2024-06-27 22:39:24,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:24,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:26,178 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 22:39:26,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:26,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414793596] [2024-06-27 22:39:26,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414793596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:26,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:26,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:26,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907528719] [2024-06-27 22:39:26,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:26,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:26,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:26,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:26,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:26,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:39:26,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 515 transitions, 6758 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:26,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:26,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:39:26,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:27,317 INFO L124 PetriNetUnfolderBase]: 1698/3237 cut-off events. [2024-06-27 22:39:27,318 INFO L125 PetriNetUnfolderBase]: For 219691/219700 co-relation queries the response was YES. [2024-06-27 22:39:27,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21184 conditions, 3237 events. 1698/3237 cut-off events. For 219691/219700 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 23539 event pairs, 525 based on Foata normal form. 3/3012 useless extension candidates. Maximal degree in co-relation 20965. Up to 2677 conditions per place. [2024-06-27 22:39:27,376 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 398 selfloop transitions, 113 changer transitions 0/527 dead transitions. [2024-06-27 22:39:27,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 527 transitions, 7894 flow [2024-06-27 22:39:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:27,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 22:39:27,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-06-27 22:39:27,377 INFO L175 Difference]: Start difference. First operand has 435 places, 515 transitions, 6758 flow. Second operand 10 states and 195 transitions. [2024-06-27 22:39:27,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 527 transitions, 7894 flow [2024-06-27 22:39:29,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 527 transitions, 7849 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 22:39:29,986 INFO L231 Difference]: Finished difference. Result has 435 places, 517 transitions, 7040 flow [2024-06-27 22:39:29,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6713, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7040, PETRI_PLACES=435, PETRI_TRANSITIONS=517} [2024-06-27 22:39:29,986 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 393 predicate places. [2024-06-27 22:39:29,986 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 517 transitions, 7040 flow [2024-06-27 22:39:29,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:29,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:29,987 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 22:39:29,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 22:39:29,987 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:29,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:29,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1749840916, now seen corresponding path program 12 times [2024-06-27 22:39:29,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:29,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367749601] [2024-06-27 22:39:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:29,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:31,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:31,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:31,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367749601] [2024-06-27 22:39:31,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367749601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:31,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:31,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:31,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281267317] [2024-06-27 22:39:31,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:31,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:31,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:31,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:31,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:31,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:39:31,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 517 transitions, 7040 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:31,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:31,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:39:31,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:32,765 INFO L124 PetriNetUnfolderBase]: 2078/3854 cut-off events. [2024-06-27 22:39:32,766 INFO L125 PetriNetUnfolderBase]: For 227642/227642 co-relation queries the response was YES. [2024-06-27 22:39:32,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25039 conditions, 3854 events. 2078/3854 cut-off events. For 227642/227642 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 27793 event pairs, 562 based on Foata normal form. 1/3666 useless extension candidates. Maximal degree in co-relation 24819. Up to 3150 conditions per place. [2024-06-27 22:39:32,825 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 400 selfloop transitions, 127 changer transitions 0/537 dead transitions. [2024-06-27 22:39:32,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 537 transitions, 8236 flow [2024-06-27 22:39:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:32,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:32,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 22:39:32,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46172248803827753 [2024-06-27 22:39:32,826 INFO L175 Difference]: Start difference. First operand has 435 places, 517 transitions, 7040 flow. Second operand 11 states and 193 transitions. [2024-06-27 22:39:32,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 537 transitions, 8236 flow [2024-06-27 22:39:35,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 537 transitions, 7933 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-27 22:39:35,734 INFO L231 Difference]: Finished difference. Result has 438 places, 519 transitions, 7072 flow [2024-06-27 22:39:35,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6737, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7072, PETRI_PLACES=438, PETRI_TRANSITIONS=519} [2024-06-27 22:39:35,735 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 396 predicate places. [2024-06-27 22:39:35,735 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 519 transitions, 7072 flow [2024-06-27 22:39:35,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:35,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:35,735 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 22:39:35,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 22:39:35,735 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:35,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:35,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1740644146, now seen corresponding path program 13 times [2024-06-27 22:39:35,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:35,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990595826] [2024-06-27 22:39:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:35,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:37,158 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 22:39:37,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:37,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990595826] [2024-06-27 22:39:37,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990595826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:37,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:37,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:37,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054136983] [2024-06-27 22:39:37,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:37,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:37,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:37,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:37,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:37,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:39:37,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 519 transitions, 7072 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:37,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:37,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:39:37,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:38,159 INFO L124 PetriNetUnfolderBase]: 1708/3251 cut-off events. [2024-06-27 22:39:38,159 INFO L125 PetriNetUnfolderBase]: For 225755/225764 co-relation queries the response was YES. [2024-06-27 22:39:38,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21629 conditions, 3251 events. 1708/3251 cut-off events. For 225755/225764 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 23630 event pairs, 525 based on Foata normal form. 7/3026 useless extension candidates. Maximal degree in co-relation 21408. Up to 2691 conditions per place. [2024-06-27 22:39:38,216 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 390 selfloop transitions, 125 changer transitions 0/531 dead transitions. [2024-06-27 22:39:38,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 531 transitions, 8200 flow [2024-06-27 22:39:38,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:38,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 22:39:38,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078947368421053 [2024-06-27 22:39:38,217 INFO L175 Difference]: Start difference. First operand has 438 places, 519 transitions, 7072 flow. Second operand 10 states and 193 transitions. [2024-06-27 22:39:38,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 531 transitions, 8200 flow [2024-06-27 22:39:41,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 531 transitions, 7893 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 22:39:41,104 INFO L231 Difference]: Finished difference. Result has 439 places, 521 transitions, 7100 flow [2024-06-27 22:39:41,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6765, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7100, PETRI_PLACES=439, PETRI_TRANSITIONS=521} [2024-06-27 22:39:41,105 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 397 predicate places. [2024-06-27 22:39:41,105 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 521 transitions, 7100 flow [2024-06-27 22:39:41,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:41,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:41,105 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 22:39:41,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 22:39:41,105 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:41,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:41,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1484143636, now seen corresponding path program 14 times [2024-06-27 22:39:41,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:41,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563699229] [2024-06-27 22:39:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:41,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:42,672 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 22:39:42,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:42,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563699229] [2024-06-27 22:39:42,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563699229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:42,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:42,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:42,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560278212] [2024-06-27 22:39:42,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:42,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:42,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:42,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:42,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:42,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:39:42,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 521 transitions, 7100 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:42,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:42,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:39:42,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:43,783 INFO L124 PetriNetUnfolderBase]: 1706/3248 cut-off events. [2024-06-27 22:39:43,783 INFO L125 PetriNetUnfolderBase]: For 214481/214490 co-relation queries the response was YES. [2024-06-27 22:39:43,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21371 conditions, 3248 events. 1706/3248 cut-off events. For 214481/214490 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 23607 event pairs, 525 based on Foata normal form. 7/3023 useless extension candidates. Maximal degree in co-relation 21150. Up to 2688 conditions per place. [2024-06-27 22:39:43,836 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 387 selfloop transitions, 128 changer transitions 0/531 dead transitions. [2024-06-27 22:39:43,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 531 transitions, 8152 flow [2024-06-27 22:39:43,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:43,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:43,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 22:39:43,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026315789473684 [2024-06-27 22:39:43,837 INFO L175 Difference]: Start difference. First operand has 439 places, 521 transitions, 7100 flow. Second operand 10 states and 191 transitions. [2024-06-27 22:39:43,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 531 transitions, 8152 flow [2024-06-27 22:39:46,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 531 transitions, 7791 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-06-27 22:39:46,371 INFO L231 Difference]: Finished difference. Result has 441 places, 521 transitions, 7000 flow [2024-06-27 22:39:46,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6739, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7000, PETRI_PLACES=441, PETRI_TRANSITIONS=521} [2024-06-27 22:39:46,371 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 399 predicate places. [2024-06-27 22:39:46,371 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 521 transitions, 7000 flow [2024-06-27 22:39:46,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:46,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:46,372 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 22:39:46,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 22:39:46,372 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:46,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:46,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1727550640, now seen corresponding path program 15 times [2024-06-27 22:39:46,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:46,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470350084] [2024-06-27 22:39:46,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:46,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:47,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:47,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470350084] [2024-06-27 22:39:47,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470350084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:47,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:47,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:39:47,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641978708] [2024-06-27 22:39:47,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:47,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:39:47,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:47,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:39:47,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:39:47,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:39:47,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 521 transitions, 7000 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:47,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:47,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:39:47,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:48,782 INFO L124 PetriNetUnfolderBase]: 1718/3265 cut-off events. [2024-06-27 22:39:48,782 INFO L125 PetriNetUnfolderBase]: For 230261/230270 co-relation queries the response was YES. [2024-06-27 22:39:48,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21739 conditions, 3265 events. 1718/3265 cut-off events. For 230261/230270 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 23757 event pairs, 525 based on Foata normal form. 7/3036 useless extension candidates. Maximal degree in co-relation 21517. Up to 2696 conditions per place. [2024-06-27 22:39:48,836 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 374 selfloop transitions, 146 changer transitions 0/536 dead transitions. [2024-06-27 22:39:48,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 536 transitions, 8570 flow [2024-06-27 22:39:48,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:48,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:48,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 22:39:48,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078947368421053 [2024-06-27 22:39:48,837 INFO L175 Difference]: Start difference. First operand has 441 places, 521 transitions, 7000 flow. Second operand 10 states and 193 transitions. [2024-06-27 22:39:48,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 536 transitions, 8570 flow [2024-06-27 22:39:51,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 536 transitions, 8295 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 22:39:51,712 INFO L231 Difference]: Finished difference. Result has 442 places, 525 transitions, 7218 flow [2024-06-27 22:39:51,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6725, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7218, PETRI_PLACES=442, PETRI_TRANSITIONS=525} [2024-06-27 22:39:51,712 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 400 predicate places. [2024-06-27 22:39:51,712 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 525 transitions, 7218 flow [2024-06-27 22:39:51,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:51,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:51,713 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 22:39:51,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 22:39:51,713 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:51,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:51,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1727877070, now seen corresponding path program 16 times [2024-06-27 22:39:51,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:51,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915285083] [2024-06-27 22:39:51,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:51,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:53,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:53,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915285083] [2024-06-27 22:39:53,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915285083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:53,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:53,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:53,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839072897] [2024-06-27 22:39:53,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:53,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:53,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:53,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:53,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:53,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:39:53,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 525 transitions, 7218 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:53,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:53,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:39:53,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:54,658 INFO L124 PetriNetUnfolderBase]: 2106/3894 cut-off events. [2024-06-27 22:39:54,659 INFO L125 PetriNetUnfolderBase]: For 238041/238041 co-relation queries the response was YES. [2024-06-27 22:39:54,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25515 conditions, 3894 events. 2106/3894 cut-off events. For 238041/238041 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 28062 event pairs, 562 based on Foata normal form. 1/3698 useless extension candidates. Maximal degree in co-relation 25291. Up to 3190 conditions per place. [2024-06-27 22:39:54,724 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 391 selfloop transitions, 144 changer transitions 0/545 dead transitions. [2024-06-27 22:39:54,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 545 transitions, 8458 flow [2024-06-27 22:39:54,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:39:54,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:39:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:39:54,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45933014354066987 [2024-06-27 22:39:54,725 INFO L175 Difference]: Start difference. First operand has 442 places, 525 transitions, 7218 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:39:54,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 545 transitions, 8458 flow [2024-06-27 22:39:57,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 545 transitions, 8144 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-27 22:39:57,925 INFO L231 Difference]: Finished difference. Result has 447 places, 527 transitions, 7301 flow [2024-06-27 22:39:57,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6924, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7301, PETRI_PLACES=447, PETRI_TRANSITIONS=527} [2024-06-27 22:39:57,926 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 405 predicate places. [2024-06-27 22:39:57,926 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 527 transitions, 7301 flow [2024-06-27 22:39:57,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:57,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:57,926 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 22:39:57,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 22:39:57,927 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:57,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:57,927 INFO L85 PathProgramCache]: Analyzing trace with hash -510042062, now seen corresponding path program 17 times [2024-06-27 22:39:57,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:57,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264272448] [2024-06-27 22:39:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:57,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:59,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:59,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264272448] [2024-06-27 22:39:59,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264272448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:59,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:59,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:39:59,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15306765] [2024-06-27 22:39:59,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:59,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:39:59,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:59,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:39:59,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:39:59,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:39:59,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 527 transitions, 7301 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:59,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:59,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:39:59,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:00,926 INFO L124 PetriNetUnfolderBase]: 2113/3907 cut-off events. [2024-06-27 22:40:00,926 INFO L125 PetriNetUnfolderBase]: For 238565/238565 co-relation queries the response was YES. [2024-06-27 22:40:00,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25818 conditions, 3907 events. 2113/3907 cut-off events. For 238565/238565 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 28145 event pairs, 562 based on Foata normal form. 1/3709 useless extension candidates. Maximal degree in co-relation 25591. Up to 3200 conditions per place. [2024-06-27 22:40:00,992 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 420 selfloop transitions, 117 changer transitions 0/547 dead transitions. [2024-06-27 22:40:00,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 547 transitions, 8545 flow [2024-06-27 22:40:00,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:00,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 22:40:00,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46411483253588515 [2024-06-27 22:40:00,993 INFO L175 Difference]: Start difference. First operand has 447 places, 527 transitions, 7301 flow. Second operand 11 states and 194 transitions. [2024-06-27 22:40:00,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 547 transitions, 8545 flow [2024-06-27 22:40:04,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 547 transitions, 8196 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 22:40:04,555 INFO L231 Difference]: Finished difference. Result has 449 places, 529 transitions, 7295 flow [2024-06-27 22:40:04,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6952, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7295, PETRI_PLACES=449, PETRI_TRANSITIONS=529} [2024-06-27 22:40:04,556 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 407 predicate places. [2024-06-27 22:40:04,556 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 529 transitions, 7295 flow [2024-06-27 22:40:04,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:04,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:04,556 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 22:40:04,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 22:40:04,557 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:04,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:04,557 INFO L85 PathProgramCache]: Analyzing trace with hash -413039178, now seen corresponding path program 18 times [2024-06-27 22:40:04,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:04,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136656902] [2024-06-27 22:40:04,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:04,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:06,166 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 22:40:06,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:06,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136656902] [2024-06-27 22:40:06,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136656902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:06,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:06,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:06,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587860799] [2024-06-27 22:40:06,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:06,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:06,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:06,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:06,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:40:06,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 529 transitions, 7295 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:06,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:06,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:40:06,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:07,311 INFO L124 PetriNetUnfolderBase]: 1726/3278 cut-off events. [2024-06-27 22:40:07,311 INFO L125 PetriNetUnfolderBase]: For 223144/223153 co-relation queries the response was YES. [2024-06-27 22:40:07,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21871 conditions, 3278 events. 1726/3278 cut-off events. For 223144/223153 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 23762 event pairs, 525 based on Foata normal form. 7/3045 useless extension candidates. Maximal degree in co-relation 21644. Up to 2716 conditions per place. [2024-06-27 22:40:07,367 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 379 selfloop transitions, 144 changer transitions 0/539 dead transitions. [2024-06-27 22:40:07,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 539 transitions, 8363 flow [2024-06-27 22:40:07,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:07,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:07,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 22:40:07,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:40:07,368 INFO L175 Difference]: Start difference. First operand has 449 places, 529 transitions, 7295 flow. Second operand 10 states and 190 transitions. [2024-06-27 22:40:07,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 539 transitions, 8363 flow [2024-06-27 22:40:09,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 539 transitions, 7982 flow, removed 75 selfloop flow, removed 9 redundant places. [2024-06-27 22:40:09,948 INFO L231 Difference]: Finished difference. Result has 450 places, 529 transitions, 7207 flow [2024-06-27 22:40:09,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6914, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7207, PETRI_PLACES=450, PETRI_TRANSITIONS=529} [2024-06-27 22:40:09,949 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 408 predicate places. [2024-06-27 22:40:09,949 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 529 transitions, 7207 flow [2024-06-27 22:40:09,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:09,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:09,949 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 22:40:09,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 22:40:09,950 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:09,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:09,950 INFO L85 PathProgramCache]: Analyzing trace with hash -509715632, now seen corresponding path program 19 times [2024-06-27 22:40:09,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:09,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393433797] [2024-06-27 22:40:09,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:09,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:11,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:11,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393433797] [2024-06-27 22:40:11,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393433797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:11,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:11,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:11,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644518581] [2024-06-27 22:40:11,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:11,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:11,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:11,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:11,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:11,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:40:11,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 529 transitions, 7207 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:11,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:11,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:40:11,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:12,392 INFO L124 PetriNetUnfolderBase]: 1731/3285 cut-off events. [2024-06-27 22:40:12,392 INFO L125 PetriNetUnfolderBase]: For 224372/224381 co-relation queries the response was YES. [2024-06-27 22:40:12,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21874 conditions, 3285 events. 1731/3285 cut-off events. For 224372/224381 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 23860 event pairs, 525 based on Foata normal form. 3/3046 useless extension candidates. Maximal degree in co-relation 21647. Up to 2708 conditions per place. [2024-06-27 22:40:12,448 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 403 selfloop transitions, 123 changer transitions 0/542 dead transitions. [2024-06-27 22:40:12,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 542 transitions, 8709 flow [2024-06-27 22:40:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:12,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:12,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 22:40:12,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-06-27 22:40:12,449 INFO L175 Difference]: Start difference. First operand has 450 places, 529 transitions, 7207 flow. Second operand 10 states and 195 transitions. [2024-06-27 22:40:12,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 542 transitions, 8709 flow [2024-06-27 22:40:15,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 542 transitions, 8409 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 22:40:15,127 INFO L231 Difference]: Finished difference. Result has 451 places, 531 transitions, 7262 flow [2024-06-27 22:40:15,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6907, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7262, PETRI_PLACES=451, PETRI_TRANSITIONS=531} [2024-06-27 22:40:15,127 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 409 predicate places. [2024-06-27 22:40:15,127 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 531 transitions, 7262 flow [2024-06-27 22:40:15,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:15,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:15,127 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 22:40:15,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 22:40:15,128 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:15,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:15,128 INFO L85 PathProgramCache]: Analyzing trace with hash 950348850, now seen corresponding path program 20 times [2024-06-27 22:40:15,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:15,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496822777] [2024-06-27 22:40:15,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:15,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:16,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:16,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496822777] [2024-06-27 22:40:16,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496822777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:16,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:16,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:40:16,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710926213] [2024-06-27 22:40:16,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:16,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:40:16,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:16,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:40:16,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:40:16,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:40:16,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 531 transitions, 7262 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:16,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:16,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:40:16,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:17,778 INFO L124 PetriNetUnfolderBase]: 1736/3292 cut-off events. [2024-06-27 22:40:17,779 INFO L125 PetriNetUnfolderBase]: For 227731/227740 co-relation queries the response was YES. [2024-06-27 22:40:17,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22027 conditions, 3292 events. 1736/3292 cut-off events. For 227731/227740 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 23886 event pairs, 525 based on Foata normal form. 3/3051 useless extension candidates. Maximal degree in co-relation 21799. Up to 2730 conditions per place. [2024-06-27 22:40:17,835 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 413 selfloop transitions, 114 changer transitions 0/543 dead transitions. [2024-06-27 22:40:17,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 543 transitions, 8446 flow [2024-06-27 22:40:17,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:40:17,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:40:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 22:40:17,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-27 22:40:17,836 INFO L175 Difference]: Start difference. First operand has 451 places, 531 transitions, 7262 flow. Second operand 10 states and 194 transitions. [2024-06-27 22:40:17,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 543 transitions, 8446 flow [2024-06-27 22:40:20,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 543 transitions, 7754 flow, removed 70 selfloop flow, removed 11 redundant places. [2024-06-27 22:40:20,415 INFO L231 Difference]: Finished difference. Result has 450 places, 533 transitions, 6915 flow [2024-06-27 22:40:20,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6598, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6915, PETRI_PLACES=450, PETRI_TRANSITIONS=533} [2024-06-27 22:40:20,415 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 408 predicate places. [2024-06-27 22:40:20,416 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 533 transitions, 6915 flow [2024-06-27 22:40:20,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:20,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:20,416 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 22:40:20,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 22:40:20,416 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:20,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:20,417 INFO L85 PathProgramCache]: Analyzing trace with hash 749259600, now seen corresponding path program 21 times [2024-06-27 22:40:20,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:20,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867376107] [2024-06-27 22:40:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:20,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:22,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:22,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867376107] [2024-06-27 22:40:22,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867376107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:22,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:22,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:40:22,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053416960] [2024-06-27 22:40:22,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:22,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:40:22,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:22,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:40:22,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:40:22,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:40:22,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 533 transitions, 6915 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:22,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:22,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:40:22,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:24,109 INFO L124 PetriNetUnfolderBase]: 1734/3289 cut-off events. [2024-06-27 22:40:24,109 INFO L125 PetriNetUnfolderBase]: For 211958/211967 co-relation queries the response was YES. [2024-06-27 22:40:24,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21036 conditions, 3289 events. 1734/3289 cut-off events. For 211958/211967 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 23820 event pairs, 525 based on Foata normal form. 3/3048 useless extension candidates. Maximal degree in co-relation 20810. Up to 2727 conditions per place. [2024-06-27 22:40:24,165 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 408 selfloop transitions, 120 changer transitions 0/543 dead transitions. [2024-06-27 22:40:24,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 543 transitions, 7993 flow [2024-06-27 22:40:24,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:24,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 22:40:24,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4665071770334928 [2024-06-27 22:40:24,167 INFO L175 Difference]: Start difference. First operand has 450 places, 533 transitions, 6915 flow. Second operand 11 states and 195 transitions. [2024-06-27 22:40:24,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 543 transitions, 7993 flow [2024-06-27 22:40:27,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 543 transitions, 7619 flow, removed 64 selfloop flow, removed 10 redundant places. [2024-06-27 22:40:27,101 INFO L231 Difference]: Finished difference. Result has 451 places, 533 transitions, 6786 flow [2024-06-27 22:40:27,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6541, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6786, PETRI_PLACES=451, PETRI_TRANSITIONS=533} [2024-06-27 22:40:27,102 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 409 predicate places. [2024-06-27 22:40:27,102 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 533 transitions, 6786 flow [2024-06-27 22:40:27,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:27,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:27,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:27,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 22:40:27,102 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:27,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:27,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1629154672, now seen corresponding path program 1 times [2024-06-27 22:40:27,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:27,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012017829] [2024-06-27 22:40:27,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:27,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:28,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:28,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012017829] [2024-06-27 22:40:28,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012017829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:28,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:28,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:40:28,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728719438] [2024-06-27 22:40:28,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:28,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:40:28,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:28,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:40:28,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:40:28,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:40:28,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 533 transitions, 6786 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:28,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:28,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:40:28,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:30,489 INFO L124 PetriNetUnfolderBase]: 2180/4098 cut-off events. [2024-06-27 22:40:30,489 INFO L125 PetriNetUnfolderBase]: For 271503/271503 co-relation queries the response was YES. [2024-06-27 22:40:30,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25833 conditions, 4098 events. 2180/4098 cut-off events. For 271503/271503 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 29878 event pairs, 494 based on Foata normal form. 2/3885 useless extension candidates. Maximal degree in co-relation 25606. Up to 2853 conditions per place. [2024-06-27 22:40:30,558 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 500 selfloop transitions, 71 changer transitions 0/581 dead transitions. [2024-06-27 22:40:30,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 581 transitions, 8982 flow [2024-06-27 22:40:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:40:30,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:40:30,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 226 transitions. [2024-06-27 22:40:30,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956140350877193 [2024-06-27 22:40:30,559 INFO L175 Difference]: Start difference. First operand has 451 places, 533 transitions, 6786 flow. Second operand 12 states and 226 transitions. [2024-06-27 22:40:30,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 581 transitions, 8982 flow [2024-06-27 22:40:34,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 581 transitions, 8716 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 22:40:34,070 INFO L231 Difference]: Finished difference. Result has 456 places, 538 transitions, 6919 flow [2024-06-27 22:40:34,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6520, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6919, PETRI_PLACES=456, PETRI_TRANSITIONS=538} [2024-06-27 22:40:34,070 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 414 predicate places. [2024-06-27 22:40:34,071 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 538 transitions, 6919 flow [2024-06-27 22:40:34,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:34,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:34,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:34,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 22:40:34,071 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:34,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:34,071 INFO L85 PathProgramCache]: Analyzing trace with hash 46588772, now seen corresponding path program 2 times [2024-06-27 22:40:34,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:34,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023555002] [2024-06-27 22:40:34,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:34,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:35,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:35,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023555002] [2024-06-27 22:40:35,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023555002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:35,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:35,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:40:35,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491312924] [2024-06-27 22:40:35,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:35,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:40:35,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:35,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:40:35,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:40:35,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:40:35,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 538 transitions, 6919 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:35,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:35,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:40:35,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:36,982 INFO L124 PetriNetUnfolderBase]: 2197/4132 cut-off events. [2024-06-27 22:40:36,983 INFO L125 PetriNetUnfolderBase]: For 280041/280041 co-relation queries the response was YES. [2024-06-27 22:40:37,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26296 conditions, 4132 events. 2197/4132 cut-off events. For 280041/280041 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 30239 event pairs, 616 based on Foata normal form. 2/3920 useless extension candidates. Maximal degree in co-relation 26066. Up to 3646 conditions per place. [2024-06-27 22:40:37,056 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 491 selfloop transitions, 68 changer transitions 0/569 dead transitions. [2024-06-27 22:40:37,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 569 transitions, 8306 flow [2024-06-27 22:40:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:40:37,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:40:37,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 221 transitions. [2024-06-27 22:40:37,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 22:40:37,057 INFO L175 Difference]: Start difference. First operand has 456 places, 538 transitions, 6919 flow. Second operand 13 states and 221 transitions. [2024-06-27 22:40:37,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 569 transitions, 8306 flow [2024-06-27 22:40:39,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 569 transitions, 8130 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-27 22:40:39,960 INFO L231 Difference]: Finished difference. Result has 463 places, 539 transitions, 6902 flow [2024-06-27 22:40:39,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6747, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6902, PETRI_PLACES=463, PETRI_TRANSITIONS=539} [2024-06-27 22:40:39,960 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 421 predicate places. [2024-06-27 22:40:39,961 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 539 transitions, 6902 flow [2024-06-27 22:40:39,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:39,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:39,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:39,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 22:40:39,961 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:39,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:39,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1722223118, now seen corresponding path program 3 times [2024-06-27 22:40:39,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:39,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931148892] [2024-06-27 22:40:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:39,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:41,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:41,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931148892] [2024-06-27 22:40:41,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931148892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:41,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:41,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:40:41,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116060324] [2024-06-27 22:40:41,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:41,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:40:41,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:41,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:40:41,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:40:41,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:40:41,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 539 transitions, 6902 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:41,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:41,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:40:41,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:43,009 INFO L124 PetriNetUnfolderBase]: 2218/4185 cut-off events. [2024-06-27 22:40:43,009 INFO L125 PetriNetUnfolderBase]: For 286138/286138 co-relation queries the response was YES. [2024-06-27 22:40:43,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26635 conditions, 4185 events. 2218/4185 cut-off events. For 286138/286138 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 30725 event pairs, 572 based on Foata normal form. 2/3979 useless extension candidates. Maximal degree in co-relation 26402. Up to 3264 conditions per place. [2024-06-27 22:40:43,085 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 499 selfloop transitions, 72 changer transitions 0/581 dead transitions. [2024-06-27 22:40:43,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 581 transitions, 8987 flow [2024-06-27 22:40:43,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:40:43,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:40:43,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 232 transitions. [2024-06-27 22:40:43,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46963562753036436 [2024-06-27 22:40:43,086 INFO L175 Difference]: Start difference. First operand has 463 places, 539 transitions, 6902 flow. Second operand 13 states and 232 transitions. [2024-06-27 22:40:43,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 581 transitions, 8987 flow [2024-06-27 22:40:46,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 581 transitions, 8849 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 22:40:46,715 INFO L231 Difference]: Finished difference. Result has 467 places, 542 transitions, 7087 flow [2024-06-27 22:40:46,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6764, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7087, PETRI_PLACES=467, PETRI_TRANSITIONS=542} [2024-06-27 22:40:46,715 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 425 predicate places. [2024-06-27 22:40:46,715 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 542 transitions, 7087 flow [2024-06-27 22:40:46,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:46,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:46,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:46,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 22:40:46,716 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:46,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:46,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1715794028, now seen corresponding path program 4 times [2024-06-27 22:40:46,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:46,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120228765] [2024-06-27 22:40:46,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:46,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:48,197 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 22:40:48,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:48,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120228765] [2024-06-27 22:40:48,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120228765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:48,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:48,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:40:48,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922755372] [2024-06-27 22:40:48,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:48,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:40:48,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:48,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:40:48,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:40:48,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:40:48,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 542 transitions, 7087 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:48,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:48,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:40:48,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:49,799 INFO L124 PetriNetUnfolderBase]: 2215/4181 cut-off events. [2024-06-27 22:40:49,799 INFO L125 PetriNetUnfolderBase]: For 261872/261872 co-relation queries the response was YES. [2024-06-27 22:40:49,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26536 conditions, 4181 events. 2215/4181 cut-off events. For 261872/261872 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 30676 event pairs, 615 based on Foata normal form. 2/3970 useless extension candidates. Maximal degree in co-relation 26300. Up to 3529 conditions per place. [2024-06-27 22:40:49,870 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 498 selfloop transitions, 69 changer transitions 0/577 dead transitions. [2024-06-27 22:40:49,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 577 transitions, 8693 flow [2024-06-27 22:40:49,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:40:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:40:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 215 transitions. [2024-06-27 22:40:49,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47149122807017546 [2024-06-27 22:40:49,872 INFO L175 Difference]: Start difference. First operand has 467 places, 542 transitions, 7087 flow. Second operand 12 states and 215 transitions. [2024-06-27 22:40:49,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 577 transitions, 8693 flow [2024-06-27 22:40:53,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 577 transitions, 8513 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 22:40:53,736 INFO L231 Difference]: Finished difference. Result has 471 places, 543 transitions, 7134 flow [2024-06-27 22:40:53,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6907, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7134, PETRI_PLACES=471, PETRI_TRANSITIONS=543} [2024-06-27 22:40:53,737 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 429 predicate places. [2024-06-27 22:40:53,737 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 543 transitions, 7134 flow [2024-06-27 22:40:53,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:53,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:53,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:53,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 22:40:53,737 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:53,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:53,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1991855148, now seen corresponding path program 5 times [2024-06-27 22:40:53,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:53,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138795194] [2024-06-27 22:40:53,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:53,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:55,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:55,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:55,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138795194] [2024-06-27 22:40:55,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138795194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:55,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:55,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:40:55,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275841018] [2024-06-27 22:40:55,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:55,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:40:55,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:55,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:40:55,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:40:55,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:40:55,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 543 transitions, 7134 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:55,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:55,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:40:55,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:56,792 INFO L124 PetriNetUnfolderBase]: 2244/4240 cut-off events. [2024-06-27 22:40:56,792 INFO L125 PetriNetUnfolderBase]: For 272128/272128 co-relation queries the response was YES. [2024-06-27 22:40:56,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27197 conditions, 4240 events. 2244/4240 cut-off events. For 272128/272128 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 31156 event pairs, 421 based on Foata normal form. 2/4020 useless extension candidates. Maximal degree in co-relation 26960. Up to 3168 conditions per place. [2024-06-27 22:40:56,871 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 507 selfloop transitions, 76 changer transitions 0/593 dead transitions. [2024-06-27 22:40:56,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 593 transitions, 9007 flow [2024-06-27 22:40:56,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:40:56,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:40:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 232 transitions. [2024-06-27 22:40:56,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46963562753036436 [2024-06-27 22:40:56,872 INFO L175 Difference]: Start difference. First operand has 471 places, 543 transitions, 7134 flow. Second operand 13 states and 232 transitions. [2024-06-27 22:40:56,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 593 transitions, 9007 flow [2024-06-27 22:41:00,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 593 transitions, 8882 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 22:41:00,924 INFO L231 Difference]: Finished difference. Result has 479 places, 552 transitions, 7691 flow [2024-06-27 22:41:00,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7009, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7691, PETRI_PLACES=479, PETRI_TRANSITIONS=552} [2024-06-27 22:41:00,925 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 437 predicate places. [2024-06-27 22:41:00,925 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 552 transitions, 7691 flow [2024-06-27 22:41:00,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:00,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:00,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:00,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 22:41:00,925 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:00,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:00,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1835524692, now seen corresponding path program 1 times [2024-06-27 22:41:00,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:00,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803403875] [2024-06-27 22:41:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:00,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:02,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:02,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803403875] [2024-06-27 22:41:02,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803403875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:02,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:02,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:41:02,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377650431] [2024-06-27 22:41:02,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:02,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:41:02,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:02,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:41:02,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:41:02,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:41:02,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 552 transitions, 7691 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:02,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:02,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:41:02,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:04,125 INFO L124 PetriNetUnfolderBase]: 1902/3751 cut-off events. [2024-06-27 22:41:04,125 INFO L125 PetriNetUnfolderBase]: For 384423/384435 co-relation queries the response was YES. [2024-06-27 22:41:04,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25392 conditions, 3751 events. 1902/3751 cut-off events. For 384423/384435 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 28254 event pairs, 627 based on Foata normal form. 14/3489 useless extension candidates. Maximal degree in co-relation 25149. Up to 3135 conditions per place. [2024-06-27 22:41:04,192 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 494 selfloop transitions, 65 changer transitions 0/574 dead transitions. [2024-06-27 22:41:04,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 574 transitions, 9041 flow [2024-06-27 22:41:04,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:41:04,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:41:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-27 22:41:04,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-06-27 22:41:04,194 INFO L175 Difference]: Start difference. First operand has 479 places, 552 transitions, 7691 flow. Second operand 12 states and 208 transitions. [2024-06-27 22:41:04,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 574 transitions, 9041 flow [2024-06-27 22:41:08,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 574 transitions, 8692 flow, removed 145 selfloop flow, removed 7 redundant places. [2024-06-27 22:41:08,686 INFO L231 Difference]: Finished difference. Result has 484 places, 552 transitions, 7476 flow [2024-06-27 22:41:08,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7342, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7476, PETRI_PLACES=484, PETRI_TRANSITIONS=552} [2024-06-27 22:41:08,687 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 442 predicate places. [2024-06-27 22:41:08,687 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 552 transitions, 7476 flow [2024-06-27 22:41:08,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:08,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:08,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:08,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 22:41:08,687 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:08,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:08,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1984848206, now seen corresponding path program 6 times [2024-06-27 22:41:08,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:08,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646413513] [2024-06-27 22:41:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:08,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:10,393 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 22:41:10,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:10,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646413513] [2024-06-27 22:41:10,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646413513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:10,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:10,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:10,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041773792] [2024-06-27 22:41:10,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:10,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:10,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:10,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:10,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:10,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:41:10,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 552 transitions, 7476 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:10,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:10,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:41:10,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:11,871 INFO L124 PetriNetUnfolderBase]: 1942/3844 cut-off events. [2024-06-27 22:41:11,871 INFO L125 PetriNetUnfolderBase]: For 332818/332830 co-relation queries the response was YES. [2024-06-27 22:41:11,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26149 conditions, 3844 events. 1942/3844 cut-off events. For 332818/332830 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 29094 event pairs, 620 based on Foata normal form. 4/3567 useless extension candidates. Maximal degree in co-relation 25906. Up to 3127 conditions per place. [2024-06-27 22:41:11,937 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 471 selfloop transitions, 89 changer transitions 0/576 dead transitions. [2024-06-27 22:41:11,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 576 transitions, 9388 flow [2024-06-27 22:41:11,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:11,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-27 22:41:11,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236842105263158 [2024-06-27 22:41:11,939 INFO L175 Difference]: Start difference. First operand has 484 places, 552 transitions, 7476 flow. Second operand 10 states and 199 transitions. [2024-06-27 22:41:11,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 576 transitions, 9388 flow [2024-06-27 22:41:16,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 576 transitions, 9260 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:41:16,313 INFO L231 Difference]: Finished difference. Result has 485 places, 555 transitions, 7648 flow [2024-06-27 22:41:16,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7348, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7648, PETRI_PLACES=485, PETRI_TRANSITIONS=555} [2024-06-27 22:41:16,313 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 443 predicate places. [2024-06-27 22:41:16,313 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 555 transitions, 7648 flow [2024-06-27 22:41:16,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:16,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:16,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:16,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 22:41:16,314 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:16,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:16,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1812121166, now seen corresponding path program 7 times [2024-06-27 22:41:16,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:16,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530104589] [2024-06-27 22:41:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:16,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:17,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:17,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530104589] [2024-06-27 22:41:17,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530104589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:17,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:17,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:41:17,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758606005] [2024-06-27 22:41:17,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:17,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:41:17,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:17,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:41:17,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:41:18,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:41:18,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 555 transitions, 7648 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:18,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:18,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:41:18,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:19,471 INFO L124 PetriNetUnfolderBase]: 1939/3839 cut-off events. [2024-06-27 22:41:19,471 INFO L125 PetriNetUnfolderBase]: For 307372/307384 co-relation queries the response was YES. [2024-06-27 22:41:19,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25996 conditions, 3839 events. 1939/3839 cut-off events. For 307372/307384 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 29035 event pairs, 628 based on Foata normal form. 4/3561 useless extension candidates. Maximal degree in co-relation 25751. Up to 3207 conditions per place. [2024-06-27 22:41:19,548 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 469 selfloop transitions, 87 changer transitions 0/571 dead transitions. [2024-06-27 22:41:19,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 571 transitions, 8948 flow [2024-06-27 22:41:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:41:19,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-27 22:41:19,549 INFO L175 Difference]: Start difference. First operand has 485 places, 555 transitions, 7648 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:41:19,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 571 transitions, 8948 flow [2024-06-27 22:41:24,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 571 transitions, 8802 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 22:41:24,106 INFO L231 Difference]: Finished difference. Result has 489 places, 555 transitions, 7680 flow [2024-06-27 22:41:24,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7502, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7680, PETRI_PLACES=489, PETRI_TRANSITIONS=555} [2024-06-27 22:41:24,106 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 447 predicate places. [2024-06-27 22:41:24,107 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 555 transitions, 7680 flow [2024-06-27 22:41:24,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:24,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:24,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:24,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 22:41:24,107 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:24,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:24,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1818787406, now seen corresponding path program 8 times [2024-06-27 22:41:24,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:24,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370606546] [2024-06-27 22:41:24,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:24,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:25,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:25,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370606546] [2024-06-27 22:41:25,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370606546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:25,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:25,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:41:25,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693020591] [2024-06-27 22:41:25,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:25,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:41:25,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:25,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:41:25,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:41:25,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:41:25,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 555 transitions, 7680 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:25,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:25,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:41:25,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:27,025 INFO L124 PetriNetUnfolderBase]: 1964/3910 cut-off events. [2024-06-27 22:41:27,025 INFO L125 PetriNetUnfolderBase]: For 316771/316783 co-relation queries the response was YES. [2024-06-27 22:41:27,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26653 conditions, 3910 events. 1964/3910 cut-off events. For 316771/316783 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 29794 event pairs, 613 based on Foata normal form. 4/3630 useless extension candidates. Maximal degree in co-relation 26406. Up to 3033 conditions per place. [2024-06-27 22:41:27,097 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 475 selfloop transitions, 91 changer transitions 0/581 dead transitions. [2024-06-27 22:41:27,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 581 transitions, 9316 flow [2024-06-27 22:41:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:27,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 22:41:27,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-27 22:41:27,104 INFO L175 Difference]: Start difference. First operand has 489 places, 555 transitions, 7680 flow. Second operand 10 states and 194 transitions. [2024-06-27 22:41:27,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 581 transitions, 9316 flow [2024-06-27 22:41:31,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 581 transitions, 9144 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 22:41:31,258 INFO L231 Difference]: Finished difference. Result has 493 places, 558 transitions, 7870 flow [2024-06-27 22:41:31,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7508, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7870, PETRI_PLACES=493, PETRI_TRANSITIONS=558} [2024-06-27 22:41:31,259 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 451 predicate places. [2024-06-27 22:41:31,259 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 558 transitions, 7870 flow [2024-06-27 22:41:31,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:31,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:31,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:31,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 22:41:31,260 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:31,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:31,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1989489836, now seen corresponding path program 9 times [2024-06-27 22:41:31,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:31,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435441661] [2024-06-27 22:41:31,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:31,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:33,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:33,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435441661] [2024-06-27 22:41:33,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435441661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:33,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:33,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:41:33,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921730498] [2024-06-27 22:41:33,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:33,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:41:33,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:33,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:41:33,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:41:33,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:41:33,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 558 transitions, 7870 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:33,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:33,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:41:33,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:34,587 INFO L124 PetriNetUnfolderBase]: 2017/4069 cut-off events. [2024-06-27 22:41:34,587 INFO L125 PetriNetUnfolderBase]: For 371648/371660 co-relation queries the response was YES. [2024-06-27 22:41:34,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28651 conditions, 4069 events. 2017/4069 cut-off events. For 371648/371660 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 31524 event pairs, 611 based on Foata normal form. 4/3777 useless extension candidates. Maximal degree in co-relation 28401. Up to 2668 conditions per place. [2024-06-27 22:41:34,662 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 482 selfloop transitions, 95 changer transitions 0/592 dead transitions. [2024-06-27 22:41:34,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 592 transitions, 10094 flow [2024-06-27 22:41:34,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:41:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:41:34,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-27 22:41:34,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:41:34,663 INFO L175 Difference]: Start difference. First operand has 493 places, 558 transitions, 7870 flow. Second operand 11 states and 209 transitions. [2024-06-27 22:41:34,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 592 transitions, 10094 flow [2024-06-27 22:41:39,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 592 transitions, 9852 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 22:41:39,736 INFO L231 Difference]: Finished difference. Result has 501 places, 563 transitions, 8103 flow [2024-06-27 22:41:39,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7628, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8103, PETRI_PLACES=501, PETRI_TRANSITIONS=563} [2024-06-27 22:41:39,737 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 459 predicate places. [2024-06-27 22:41:39,737 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 563 transitions, 8103 flow [2024-06-27 22:41:39,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:39,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:39,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:39,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 22:41:39,737 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:39,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:39,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2099200272, now seen corresponding path program 10 times [2024-06-27 22:41:39,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:39,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660693348] [2024-06-27 22:41:39,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:39,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:41,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:41,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660693348] [2024-06-27 22:41:41,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660693348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:41,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:41,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:41,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81196227] [2024-06-27 22:41:41,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:41,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:41,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:41,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:41,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:41,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:41:41,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 563 transitions, 8103 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:41,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:41,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:41:41,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:42,401 INFO L124 PetriNetUnfolderBase]: 2034/4109 cut-off events. [2024-06-27 22:41:42,401 INFO L125 PetriNetUnfolderBase]: For 378970/378982 co-relation queries the response was YES. [2024-06-27 22:41:42,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29129 conditions, 4109 events. 2034/4109 cut-off events. For 378970/378982 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 31924 event pairs, 666 based on Foata normal form. 8/3809 useless extension candidates. Maximal degree in co-relation 28875. Up to 3385 conditions per place. [2024-06-27 22:41:42,486 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 450 selfloop transitions, 114 changer transitions 0/580 dead transitions. [2024-06-27 22:41:42,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 580 transitions, 9444 flow [2024-06-27 22:41:42,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:42,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 22:41:42,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:41:42,487 INFO L175 Difference]: Start difference. First operand has 501 places, 563 transitions, 8103 flow. Second operand 10 states and 190 transitions. [2024-06-27 22:41:42,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 580 transitions, 9444 flow [2024-06-27 22:41:47,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 580 transitions, 9186 flow, removed 79 selfloop flow, removed 5 redundant places. [2024-06-27 22:41:47,812 INFO L231 Difference]: Finished difference. Result has 506 places, 564 transitions, 8104 flow [2024-06-27 22:41:47,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7851, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8104, PETRI_PLACES=506, PETRI_TRANSITIONS=564} [2024-06-27 22:41:47,812 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 464 predicate places. [2024-06-27 22:41:47,812 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 564 transitions, 8104 flow [2024-06-27 22:41:47,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:47,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:47,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:47,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 22:41:47,813 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:47,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:47,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2092017714, now seen corresponding path program 11 times [2024-06-27 22:41:47,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:47,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168506516] [2024-06-27 22:41:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:47,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:49,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:49,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168506516] [2024-06-27 22:41:49,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168506516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:49,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:49,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:49,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835693295] [2024-06-27 22:41:49,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:49,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:49,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:49,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:49,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:49,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:41:49,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 564 transitions, 8104 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:49,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:49,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:41:49,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:50,794 INFO L124 PetriNetUnfolderBase]: 2074/4208 cut-off events. [2024-06-27 22:41:50,795 INFO L125 PetriNetUnfolderBase]: For 419272/419284 co-relation queries the response was YES. [2024-06-27 22:41:50,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30203 conditions, 4208 events. 2074/4208 cut-off events. For 419272/419284 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 32904 event pairs, 672 based on Foata normal form. 8/3903 useless extension candidates. Maximal degree in co-relation 29948. Up to 3373 conditions per place. [2024-06-27 22:41:50,875 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 477 selfloop transitions, 95 changer transitions 0/588 dead transitions. [2024-06-27 22:41:50,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 588 transitions, 10062 flow [2024-06-27 22:41:50,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:50,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-27 22:41:50,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210526315789473 [2024-06-27 22:41:50,876 INFO L175 Difference]: Start difference. First operand has 506 places, 564 transitions, 8104 flow. Second operand 10 states and 198 transitions. [2024-06-27 22:41:50,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 588 transitions, 10062 flow [2024-06-27 22:41:56,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 588 transitions, 9826 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 22:41:56,690 INFO L231 Difference]: Finished difference. Result has 509 places, 567 transitions, 8192 flow [2024-06-27 22:41:56,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7868, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8192, PETRI_PLACES=509, PETRI_TRANSITIONS=567} [2024-06-27 22:41:56,691 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 467 predicate places. [2024-06-27 22:41:56,691 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 567 transitions, 8192 flow [2024-06-27 22:41:56,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:56,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:56,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:56,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 22:41:56,692 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:56,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:56,693 INFO L85 PathProgramCache]: Analyzing trace with hash 847470634, now seen corresponding path program 12 times [2024-06-27 22:41:56,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:56,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662789283] [2024-06-27 22:41:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:56,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:58,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:58,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662789283] [2024-06-27 22:41:58,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662789283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:58,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:58,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:41:58,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825839302] [2024-06-27 22:41:58,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:58,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:41:58,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:58,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:41:58,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:41:58,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:41:58,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 567 transitions, 8192 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:58,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:58,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:41:58,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:59,702 INFO L124 PetriNetUnfolderBase]: 2071/4202 cut-off events. [2024-06-27 22:41:59,702 INFO L125 PetriNetUnfolderBase]: For 392331/392343 co-relation queries the response was YES. [2024-06-27 22:41:59,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29850 conditions, 4202 events. 2071/4202 cut-off events. For 392331/392343 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 32868 event pairs, 681 based on Foata normal form. 8/3896 useless extension candidates. Maximal degree in co-relation 29593. Up to 3453 conditions per place. [2024-06-27 22:41:59,782 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 474 selfloop transitions, 93 changer transitions 0/583 dead transitions. [2024-06-27 22:41:59,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 583 transitions, 9514 flow [2024-06-27 22:41:59,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:59,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 22:41:59,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-06-27 22:41:59,783 INFO L175 Difference]: Start difference. First operand has 509 places, 567 transitions, 8192 flow. Second operand 10 states and 192 transitions. [2024-06-27 22:41:59,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 583 transitions, 9514 flow [2024-06-27 22:42:05,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 583 transitions, 9350 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 22:42:05,484 INFO L231 Difference]: Finished difference. Result has 513 places, 567 transitions, 8218 flow [2024-06-27 22:42:05,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8028, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8218, PETRI_PLACES=513, PETRI_TRANSITIONS=567} [2024-06-27 22:42:05,484 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 471 predicate places. [2024-06-27 22:42:05,484 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 567 transitions, 8218 flow [2024-06-27 22:42:05,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:05,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:05,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:05,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 22:42:05,485 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:05,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:05,485 INFO L85 PathProgramCache]: Analyzing trace with hash -604330122, now seen corresponding path program 13 times [2024-06-27 22:42:05,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:05,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205056172] [2024-06-27 22:42:05,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:05,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:06,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:06,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205056172] [2024-06-27 22:42:06,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205056172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:06,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:06,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:42:06,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977906057] [2024-06-27 22:42:06,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:06,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:42:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:06,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:42:06,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:42:07,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:42:07,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 567 transitions, 8218 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:07,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:07,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:42:07,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:08,550 INFO L124 PetriNetUnfolderBase]: 2091/4257 cut-off events. [2024-06-27 22:42:08,550 INFO L125 PetriNetUnfolderBase]: For 401326/401338 co-relation queries the response was YES. [2024-06-27 22:42:08,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30398 conditions, 4257 events. 2091/4257 cut-off events. For 401326/401338 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 33386 event pairs, 658 based on Foata normal form. 8/3951 useless extension candidates. Maximal degree in co-relation 30138. Up to 3161 conditions per place. [2024-06-27 22:42:08,633 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 481 selfloop transitions, 99 changer transitions 0/595 dead transitions. [2024-06-27 22:42:08,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 595 transitions, 10325 flow [2024-06-27 22:42:08,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:08,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 22:42:08,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-06-27 22:42:08,634 INFO L175 Difference]: Start difference. First operand has 513 places, 567 transitions, 8218 flow. Second operand 10 states and 192 transitions. [2024-06-27 22:42:08,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 595 transitions, 10325 flow [2024-06-27 22:42:14,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 595 transitions, 10141 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 22:42:14,636 INFO L231 Difference]: Finished difference. Result has 517 places, 570 transitions, 8430 flow [2024-06-27 22:42:14,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8034, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8430, PETRI_PLACES=517, PETRI_TRANSITIONS=570} [2024-06-27 22:42:14,637 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 475 predicate places. [2024-06-27 22:42:14,637 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 570 transitions, 8430 flow [2024-06-27 22:42:14,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:14,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:14,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:14,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 22:42:14,637 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:14,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:14,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1814100402, now seen corresponding path program 14 times [2024-06-27 22:42:14,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:14,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128638153] [2024-06-27 22:42:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:14,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:16,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:16,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128638153] [2024-06-27 22:42:16,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128638153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:16,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:16,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:16,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210790918] [2024-06-27 22:42:16,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:16,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:16,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:16,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:16,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:16,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:42:16,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 570 transitions, 8430 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:16,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:16,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:42:16,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:17,711 INFO L124 PetriNetUnfolderBase]: 2108/4296 cut-off events. [2024-06-27 22:42:17,712 INFO L125 PetriNetUnfolderBase]: For 411558/411570 co-relation queries the response was YES. [2024-06-27 22:42:17,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31061 conditions, 4296 events. 2108/4296 cut-off events. For 411558/411570 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 33812 event pairs, 695 based on Foata normal form. 8/3981 useless extension candidates. Maximal degree in co-relation 30799. Up to 3521 conditions per place. [2024-06-27 22:42:17,798 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 469 selfloop transitions, 102 changer transitions 0/587 dead transitions. [2024-06-27 22:42:17,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 587 transitions, 9786 flow [2024-06-27 22:42:17,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:17,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:17,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 22:42:17,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026315789473684 [2024-06-27 22:42:17,812 INFO L175 Difference]: Start difference. First operand has 517 places, 570 transitions, 8430 flow. Second operand 10 states and 191 transitions. [2024-06-27 22:42:17,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 587 transitions, 9786 flow [2024-06-27 22:42:24,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 587 transitions, 9470 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-27 22:42:24,106 INFO L231 Difference]: Finished difference. Result has 520 places, 571 transitions, 8350 flow [2024-06-27 22:42:24,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8117, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8350, PETRI_PLACES=520, PETRI_TRANSITIONS=571} [2024-06-27 22:42:24,107 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 478 predicate places. [2024-06-27 22:42:24,107 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 571 transitions, 8350 flow [2024-06-27 22:42:24,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:24,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:24,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:24,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 22:42:24,108 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:24,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:24,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1813863252, now seen corresponding path program 15 times [2024-06-27 22:42:24,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:24,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671756404] [2024-06-27 22:42:24,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:24,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:25,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:25,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671756404] [2024-06-27 22:42:25,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671756404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:25,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:25,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:25,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580499298] [2024-06-27 22:42:25,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:25,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:25,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:25,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:25,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:25,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:42:25,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 571 transitions, 8350 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:25,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:25,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:42:25,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:26,945 INFO L124 PetriNetUnfolderBase]: 2105/4291 cut-off events. [2024-06-27 22:42:26,946 INFO L125 PetriNetUnfolderBase]: For 377931/377943 co-relation queries the response was YES. [2024-06-27 22:42:27,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30243 conditions, 4291 events. 2105/4291 cut-off events. For 377931/377943 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 33751 event pairs, 685 based on Foata normal form. 8/3979 useless extension candidates. Maximal degree in co-relation 29981. Up to 3414 conditions per place. [2024-06-27 22:42:27,031 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 471 selfloop transitions, 105 changer transitions 0/592 dead transitions. [2024-06-27 22:42:27,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 592 transitions, 9926 flow [2024-06-27 22:42:27,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:27,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 22:42:27,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-06-27 22:42:27,033 INFO L175 Difference]: Start difference. First operand has 520 places, 571 transitions, 8350 flow. Second operand 10 states and 195 transitions. [2024-06-27 22:42:27,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 592 transitions, 9926 flow [2024-06-27 22:42:32,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 592 transitions, 9686 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 22:42:32,373 INFO L231 Difference]: Finished difference. Result has 523 places, 572 transitions, 8416 flow [2024-06-27 22:42:32,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8110, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8416, PETRI_PLACES=523, PETRI_TRANSITIONS=572} [2024-06-27 22:42:32,373 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 481 predicate places. [2024-06-27 22:42:32,373 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 572 transitions, 8416 flow [2024-06-27 22:42:32,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:32,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:32,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:32,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 22:42:32,374 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:32,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:32,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1842439184, now seen corresponding path program 2 times [2024-06-27 22:42:32,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:32,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417700771] [2024-06-27 22:42:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:32,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:34,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:34,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417700771] [2024-06-27 22:42:34,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417700771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:34,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:34,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:42:34,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389340489] [2024-06-27 22:42:34,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:34,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:42:34,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:34,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:42:34,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:42:34,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:42:34,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 572 transitions, 8416 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:34,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:34,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:42:34,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:36,110 INFO L124 PetriNetUnfolderBase]: 2153/4429 cut-off events. [2024-06-27 22:42:36,110 INFO L125 PetriNetUnfolderBase]: For 499988/500003 co-relation queries the response was YES. [2024-06-27 22:42:36,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31268 conditions, 4429 events. 2153/4429 cut-off events. For 499988/500003 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 35179 event pairs, 726 based on Foata normal form. 14/4110 useless extension candidates. Maximal degree in co-relation 31003. Up to 3522 conditions per place. [2024-06-27 22:42:36,189 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 483 selfloop transitions, 94 changer transitions 0/592 dead transitions. [2024-06-27 22:42:36,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 592 transitions, 9796 flow [2024-06-27 22:42:36,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:42:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:42:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 22:42:36,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-06-27 22:42:36,190 INFO L175 Difference]: Start difference. First operand has 523 places, 572 transitions, 8416 flow. Second operand 11 states and 200 transitions. [2024-06-27 22:42:36,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 592 transitions, 9796 flow [2024-06-27 22:42:42,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 592 transitions, 9520 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 22:42:42,345 INFO L231 Difference]: Finished difference. Result has 526 places, 572 transitions, 8332 flow [2024-06-27 22:42:42,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8140, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8332, PETRI_PLACES=526, PETRI_TRANSITIONS=572} [2024-06-27 22:42:42,346 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 484 predicate places. [2024-06-27 22:42:42,346 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 572 transitions, 8332 flow [2024-06-27 22:42:42,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:42,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:42,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:42,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 22:42:42,347 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:42,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1567516420, now seen corresponding path program 3 times [2024-06-27 22:42:42,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:42,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422699478] [2024-06-27 22:42:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:42,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:44,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:44,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422699478] [2024-06-27 22:42:44,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422699478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:44,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:44,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 22:42:44,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701690770] [2024-06-27 22:42:44,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:44,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 22:42:44,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:44,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 22:42:44,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 22:42:44,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:42:44,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 572 transitions, 8332 flow. Second operand has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 13 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:44,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:44,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:42:44,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:46,189 INFO L124 PetriNetUnfolderBase]: 2201/4551 cut-off events. [2024-06-27 22:42:46,190 INFO L125 PetriNetUnfolderBase]: For 524746/524764 co-relation queries the response was YES. [2024-06-27 22:42:46,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32040 conditions, 4551 events. 2201/4551 cut-off events. For 524746/524764 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 36610 event pairs, 758 based on Foata normal form. 14/4225 useless extension candidates. Maximal degree in co-relation 31775. Up to 3624 conditions per place. [2024-06-27 22:42:46,283 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 473 selfloop transitions, 104 changer transitions 0/592 dead transitions. [2024-06-27 22:42:46,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 592 transitions, 9712 flow [2024-06-27 22:42:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:42:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:42:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 211 transitions. [2024-06-27 22:42:46,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46271929824561403 [2024-06-27 22:42:46,284 INFO L175 Difference]: Start difference. First operand has 526 places, 572 transitions, 8332 flow. Second operand 12 states and 211 transitions. [2024-06-27 22:42:46,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 592 transitions, 9712 flow [2024-06-27 22:42:53,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 592 transitions, 9526 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:42:53,280 INFO L231 Difference]: Finished difference. Result has 529 places, 572 transitions, 8358 flow [2024-06-27 22:42:53,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8146, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8358, PETRI_PLACES=529, PETRI_TRANSITIONS=572} [2024-06-27 22:42:53,280 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 487 predicate places. [2024-06-27 22:42:53,280 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 572 transitions, 8358 flow [2024-06-27 22:42:53,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.23076923076923) internal successors, (172), 13 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:53,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:53,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:53,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 22:42:53,281 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:53,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:53,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2099209200, now seen corresponding path program 4 times [2024-06-27 22:42:53,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:53,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040871590] [2024-06-27 22:42:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:53,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:54,911 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 22:42:54,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:54,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040871590] [2024-06-27 22:42:54,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040871590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:54,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:54,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:42:54,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317798632] [2024-06-27 22:42:54,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:54,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:42:54,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:54,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:42:54,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:42:55,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:42:55,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 572 transitions, 8358 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:55,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:55,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:42:55,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:56,655 INFO L124 PetriNetUnfolderBase]: 2249/4689 cut-off events. [2024-06-27 22:42:56,656 INFO L125 PetriNetUnfolderBase]: For 548159/548180 co-relation queries the response was YES. [2024-06-27 22:42:56,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33138 conditions, 4689 events. 2249/4689 cut-off events. For 548159/548180 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 38028 event pairs, 790 based on Foata normal form. 14/4352 useless extension candidates. Maximal degree in co-relation 32871. Up to 3726 conditions per place. [2024-06-27 22:42:56,747 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 462 selfloop transitions, 115 changer transitions 0/592 dead transitions. [2024-06-27 22:42:56,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 592 transitions, 9738 flow [2024-06-27 22:42:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:42:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:42:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 22:42:56,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 22:42:56,749 INFO L175 Difference]: Start difference. First operand has 529 places, 572 transitions, 8358 flow. Second operand 11 states and 198 transitions. [2024-06-27 22:42:56,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 592 transitions, 9738 flow [2024-06-27 22:43:04,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 592 transitions, 9532 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 22:43:04,677 INFO L231 Difference]: Finished difference. Result has 530 places, 572 transitions, 8386 flow [2024-06-27 22:43:04,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8152, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8386, PETRI_PLACES=530, PETRI_TRANSITIONS=572} [2024-06-27 22:43:04,678 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 488 predicate places. [2024-06-27 22:43:04,678 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 572 transitions, 8386 flow [2024-06-27 22:43:04,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:04,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:04,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:04,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 22:43:04,679 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:04,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:04,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1272297220, now seen corresponding path program 5 times [2024-06-27 22:43:04,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:04,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906049446] [2024-06-27 22:43:04,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:04,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:06,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:06,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906049446] [2024-06-27 22:43:06,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906049446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:06,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:06,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:43:06,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016128231] [2024-06-27 22:43:06,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:06,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:43:06,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:06,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:43:06,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:43:06,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 22:43:06,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 572 transitions, 8386 flow. Second operand has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:06,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:06,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 22:43:06,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:08,186 INFO L124 PetriNetUnfolderBase]: 2298/4820 cut-off events. [2024-06-27 22:43:08,186 INFO L125 PetriNetUnfolderBase]: For 571030/571054 co-relation queries the response was YES. [2024-06-27 22:43:08,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34237 conditions, 4820 events. 2298/4820 cut-off events. For 571030/571054 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 39593 event pairs, 831 based on Foata normal form. 14/4476 useless extension candidates. Maximal degree in co-relation 33970. Up to 3806 conditions per place. [2024-06-27 22:43:08,269 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 451 selfloop transitions, 126 changer transitions 0/592 dead transitions. [2024-06-27 22:43:08,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 592 transitions, 9766 flow [2024-06-27 22:43:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:43:08,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:43:08,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 22:43:08,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-06-27 22:43:08,271 INFO L175 Difference]: Start difference. First operand has 530 places, 572 transitions, 8386 flow. Second operand 11 states and 199 transitions. [2024-06-27 22:43:08,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 592 transitions, 9766 flow [2024-06-27 22:43:16,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 592 transitions, 9538 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:43:16,277 INFO L231 Difference]: Finished difference. Result has 532 places, 572 transitions, 8414 flow [2024-06-27 22:43:16,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8158, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8414, PETRI_PLACES=532, PETRI_TRANSITIONS=572} [2024-06-27 22:43:16,277 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 490 predicate places. [2024-06-27 22:43:16,277 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 572 transitions, 8414 flow [2024-06-27 22:43:16,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.333333333333334) internal successors, (160), 12 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:16,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:16,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:16,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 22:43:16,278 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:16,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:16,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1271941030, now seen corresponding path program 6 times [2024-06-27 22:43:16,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:16,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377618321] [2024-06-27 22:43:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:16,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:17,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:17,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377618321] [2024-06-27 22:43:17,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377618321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:17,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:17,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:43:17,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658713589] [2024-06-27 22:43:17,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:17,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:43:17,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:17,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:43:17,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:43:18,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:43:18,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 572 transitions, 8414 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:18,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:18,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:43:18,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:19,744 INFO L124 PetriNetUnfolderBase]: 2383/5080 cut-off events. [2024-06-27 22:43:19,744 INFO L125 PetriNetUnfolderBase]: For 712342/712366 co-relation queries the response was YES. [2024-06-27 22:43:19,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37690 conditions, 5080 events. 2383/5080 cut-off events. For 712342/712366 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 42575 event pairs, 872 based on Foata normal form. 12/4716 useless extension candidates. Maximal degree in co-relation 37423. Up to 3139 conditions per place. [2024-06-27 22:43:19,845 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 457 selfloop transitions, 126 changer transitions 0/599 dead transitions. [2024-06-27 22:43:19,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 599 transitions, 10366 flow [2024-06-27 22:43:19,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:43:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:43:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-27 22:43:19,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167464114832536 [2024-06-27 22:43:19,847 INFO L175 Difference]: Start difference. First operand has 532 places, 572 transitions, 8414 flow. Second operand 11 states and 216 transitions. [2024-06-27 22:43:19,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 599 transitions, 10366 flow [2024-06-27 22:43:30,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 599 transitions, 10116 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:43:30,810 INFO L231 Difference]: Finished difference. Result has 534 places, 572 transitions, 8419 flow [2024-06-27 22:43:30,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8164, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8419, PETRI_PLACES=534, PETRI_TRANSITIONS=572} [2024-06-27 22:43:30,811 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 492 predicate places. [2024-06-27 22:43:30,811 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 572 transitions, 8419 flow [2024-06-27 22:43:30,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:30,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:30,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:30,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 22:43:30,813 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:30,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:30,814 INFO L85 PathProgramCache]: Analyzing trace with hash -898770692, now seen corresponding path program 7 times [2024-06-27 22:43:30,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:30,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576036478] [2024-06-27 22:43:30,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:30,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:32,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:32,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576036478] [2024-06-27 22:43:32,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576036478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:32,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:32,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:43:32,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177282759] [2024-06-27 22:43:32,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:32,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:43:32,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:32,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:43:32,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:43:32,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:43:32,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 572 transitions, 8419 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:32,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:32,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:43:32,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:34,581 INFO L124 PetriNetUnfolderBase]: 2412/5146 cut-off events. [2024-06-27 22:43:34,582 INFO L125 PetriNetUnfolderBase]: For 738781/738808 co-relation queries the response was YES. [2024-06-27 22:43:34,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37954 conditions, 5146 events. 2412/5146 cut-off events. For 738781/738808 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 43344 event pairs, 939 based on Foata normal form. 10/4777 useless extension candidates. Maximal degree in co-relation 37686. Up to 4086 conditions per place. [2024-06-27 22:43:34,693 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 488 selfloop transitions, 88 changer transitions 0/592 dead transitions. [2024-06-27 22:43:34,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 592 transitions, 9797 flow [2024-06-27 22:43:34,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:43:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:43:34,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-27 22:43:34,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047846889952153 [2024-06-27 22:43:34,694 INFO L175 Difference]: Start difference. First operand has 534 places, 572 transitions, 8419 flow. Second operand 11 states and 211 transitions. [2024-06-27 22:43:34,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 592 transitions, 9797 flow [2024-06-27 22:43:45,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 592 transitions, 9546 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:43:45,597 INFO L231 Difference]: Finished difference. Result has 536 places, 572 transitions, 8348 flow [2024-06-27 22:43:45,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8168, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8348, PETRI_PLACES=536, PETRI_TRANSITIONS=572} [2024-06-27 22:43:45,598 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 494 predicate places. [2024-06-27 22:43:45,598 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 572 transitions, 8348 flow [2024-06-27 22:43:45,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:45,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:45,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:45,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 22:43:45,598 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:45,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:45,599 INFO L85 PathProgramCache]: Analyzing trace with hash 506841130, now seen corresponding path program 16 times [2024-06-27 22:43:45,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:45,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683436659] [2024-06-27 22:43:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:45,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:47,046 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 22:43:47,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:47,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683436659] [2024-06-27 22:43:47,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683436659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:47,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:47,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:43:47,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031162277] [2024-06-27 22:43:47,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:47,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:43:47,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:47,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:43:47,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:43:47,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-27 22:43:47,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 572 transitions, 8348 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:47,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:47,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-27 22:43:47,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:49,065 INFO L124 PetriNetUnfolderBase]: 2828/5785 cut-off events. [2024-06-27 22:43:49,065 INFO L125 PetriNetUnfolderBase]: For 528061/528061 co-relation queries the response was YES. [2024-06-27 22:43:49,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40261 conditions, 5785 events. 2828/5785 cut-off events. For 528061/528061 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 47362 event pairs, 1293 based on Foata normal form. 2/5457 useless extension candidates. Maximal degree in co-relation 39991. Up to 4967 conditions per place. [2024-06-27 22:43:49,180 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 564 selfloop transitions, 20 changer transitions 0/594 dead transitions. [2024-06-27 22:43:49,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 594 transitions, 9766 flow [2024-06-27 22:43:49,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:43:49,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:43:49,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 22:43:49,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-06-27 22:43:49,182 INFO L175 Difference]: Start difference. First operand has 536 places, 572 transitions, 8348 flow. Second operand 11 states and 183 transitions. [2024-06-27 22:43:49,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 594 transitions, 9766 flow [2024-06-27 22:43:58,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 594 transitions, 9592 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 22:43:58,636 INFO L231 Difference]: Finished difference. Result has 538 places, 574 transitions, 8395 flow [2024-06-27 22:43:58,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8174, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8395, PETRI_PLACES=538, PETRI_TRANSITIONS=574} [2024-06-27 22:43:58,637 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 496 predicate places. [2024-06-27 22:43:58,637 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 574 transitions, 8395 flow [2024-06-27 22:43:58,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:58,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:58,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:58,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 22:43:58,637 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:58,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:58,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2024589364, now seen corresponding path program 17 times [2024-06-27 22:43:58,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:58,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650931829] [2024-06-27 22:43:58,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:58,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:59,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:59,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650931829] [2024-06-27 22:43:59,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650931829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:59,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:59,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:43:59,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878515110] [2024-06-27 22:43:59,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:59,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:43:59,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:59,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:43:59,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:43:59,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:43:59,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 574 transitions, 8395 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:59,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:59,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:43:59,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:01,474 INFO L124 PetriNetUnfolderBase]: 2398/5126 cut-off events. [2024-06-27 22:44:01,474 INFO L125 PetriNetUnfolderBase]: For 539638/539665 co-relation queries the response was YES. [2024-06-27 22:44:01,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36694 conditions, 5126 events. 2398/5126 cut-off events. For 539638/539665 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 43222 event pairs, 908 based on Foata normal form. 8/4745 useless extension candidates. Maximal degree in co-relation 36423. Up to 4041 conditions per place. [2024-06-27 22:44:01,581 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 431 selfloop transitions, 142 changer transitions 0/589 dead transitions. [2024-06-27 22:44:01,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 589 transitions, 9749 flow [2024-06-27 22:44:01,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:44:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:44:01,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 22:44:01,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-27 22:44:01,583 INFO L175 Difference]: Start difference. First operand has 538 places, 574 transitions, 8395 flow. Second operand 10 states and 194 transitions. [2024-06-27 22:44:01,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 589 transitions, 9749 flow [2024-06-27 22:44:11,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 589 transitions, 9544 flow, removed 84 selfloop flow, removed 9 redundant places. [2024-06-27 22:44:11,411 INFO L231 Difference]: Finished difference. Result has 539 places, 575 transitions, 8504 flow [2024-06-27 22:44:11,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8190, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8504, PETRI_PLACES=539, PETRI_TRANSITIONS=575} [2024-06-27 22:44:11,412 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 497 predicate places. [2024-06-27 22:44:11,412 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 575 transitions, 8504 flow [2024-06-27 22:44:11,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:11,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:11,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:11,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 22:44:11,412 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:11,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1589514198, now seen corresponding path program 18 times [2024-06-27 22:44:11,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:11,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260629812] [2024-06-27 22:44:11,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:11,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:12,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:12,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260629812] [2024-06-27 22:44:12,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260629812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:12,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:12,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:12,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717831649] [2024-06-27 22:44:12,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:12,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:12,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:12,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:12,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:12,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:44:12,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 575 transitions, 8504 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:12,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:12,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:44:12,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:14,585 INFO L124 PetriNetUnfolderBase]: 2412/5154 cut-off events. [2024-06-27 22:44:14,585 INFO L125 PetriNetUnfolderBase]: For 543605/543632 co-relation queries the response was YES. [2024-06-27 22:44:14,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37165 conditions, 5154 events. 2412/5154 cut-off events. For 543605/543632 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 43544 event pairs, 906 based on Foata normal form. 8/4770 useless extension candidates. Maximal degree in co-relation 36894. Up to 4067 conditions per place. [2024-06-27 22:44:14,682 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 449 selfloop transitions, 125 changer transitions 0/590 dead transitions. [2024-06-27 22:44:14,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 590 transitions, 9862 flow [2024-06-27 22:44:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:44:14,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:44:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 22:44:14,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-06-27 22:44:14,684 INFO L175 Difference]: Start difference. First operand has 539 places, 575 transitions, 8504 flow. Second operand 10 states and 195 transitions. [2024-06-27 22:44:14,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 590 transitions, 9862 flow [2024-06-27 22:44:24,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 590 transitions, 9564 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 22:44:24,349 INFO L231 Difference]: Finished difference. Result has 541 places, 576 transitions, 8488 flow [2024-06-27 22:44:24,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8206, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8488, PETRI_PLACES=541, PETRI_TRANSITIONS=576} [2024-06-27 22:44:24,349 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 499 predicate places. [2024-06-27 22:44:24,349 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 576 transitions, 8488 flow [2024-06-27 22:44:24,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:24,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:24,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:24,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 22:44:24,350 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:24,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:24,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1985278062, now seen corresponding path program 19 times [2024-06-27 22:44:24,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:24,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225914460] [2024-06-27 22:44:24,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:24,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:25,797 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 22:44:25,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:25,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225914460] [2024-06-27 22:44:25,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225914460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:25,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:25,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:25,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699271622] [2024-06-27 22:44:25,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:25,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:25,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:25,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:25,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:25,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:44:25,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 576 transitions, 8488 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:25,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:25,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:44:25,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:27,501 INFO L124 PetriNetUnfolderBase]: 2426/5189 cut-off events. [2024-06-27 22:44:27,501 INFO L125 PetriNetUnfolderBase]: For 552263/552290 co-relation queries the response was YES. [2024-06-27 22:44:27,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37453 conditions, 5189 events. 2426/5189 cut-off events. For 552263/552290 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 43912 event pairs, 909 based on Foata normal form. 8/4802 useless extension candidates. Maximal degree in co-relation 37181. Up to 4093 conditions per place. [2024-06-27 22:44:27,607 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 432 selfloop transitions, 143 changer transitions 0/591 dead transitions. [2024-06-27 22:44:27,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 591 transitions, 9850 flow [2024-06-27 22:44:27,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:44:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:44:27,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 22:44:27,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078947368421053 [2024-06-27 22:44:27,608 INFO L175 Difference]: Start difference. First operand has 541 places, 576 transitions, 8488 flow. Second operand 10 states and 193 transitions. [2024-06-27 22:44:27,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 591 transitions, 9850 flow [2024-06-27 22:44:37,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 591 transitions, 9584 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 22:44:37,857 INFO L231 Difference]: Finished difference. Result has 543 places, 577 transitions, 8542 flow [2024-06-27 22:44:37,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8222, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8542, PETRI_PLACES=543, PETRI_TRANSITIONS=577} [2024-06-27 22:44:37,857 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 501 predicate places. [2024-06-27 22:44:37,857 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 577 transitions, 8542 flow [2024-06-27 22:44:37,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:37,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:37,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:37,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 22:44:37,858 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:37,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:37,859 INFO L85 PathProgramCache]: Analyzing trace with hash 492189798, now seen corresponding path program 20 times [2024-06-27 22:44:37,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:37,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505563427] [2024-06-27 22:44:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:37,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:39,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:39,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505563427] [2024-06-27 22:44:39,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505563427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:39,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:39,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:39,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804360160] [2024-06-27 22:44:39,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:39,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:39,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:39,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:39,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:39,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:44:39,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 577 transitions, 8542 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:39,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:39,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:44:39,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:40,920 INFO L124 PetriNetUnfolderBase]: 2440/5223 cut-off events. [2024-06-27 22:44:40,920 INFO L125 PetriNetUnfolderBase]: For 560176/560203 co-relation queries the response was YES. [2024-06-27 22:44:41,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37797 conditions, 5223 events. 2440/5223 cut-off events. For 560176/560203 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 44220 event pairs, 917 based on Foata normal form. 8/4833 useless extension candidates. Maximal degree in co-relation 37524. Up to 4119 conditions per place. [2024-06-27 22:44:41,037 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 452 selfloop transitions, 124 changer transitions 0/592 dead transitions. [2024-06-27 22:44:41,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 592 transitions, 9908 flow [2024-06-27 22:44:41,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:44:41,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:44:41,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 22:44:41,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-06-27 22:44:41,038 INFO L175 Difference]: Start difference. First operand has 543 places, 577 transitions, 8542 flow. Second operand 10 states and 196 transitions. [2024-06-27 22:44:41,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 592 transitions, 9908 flow [2024-06-27 22:44:51,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 592 transitions, 9604 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:44:51,319 INFO L231 Difference]: Finished difference. Result has 545 places, 578 transitions, 8522 flow [2024-06-27 22:44:51,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8238, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8522, PETRI_PLACES=545, PETRI_TRANSITIONS=578} [2024-06-27 22:44:51,319 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 503 predicate places. [2024-06-27 22:44:51,319 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 578 transitions, 8522 flow [2024-06-27 22:44:51,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:51,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:51,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:51,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 22:44:51,320 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:51,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:51,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1985040912, now seen corresponding path program 21 times [2024-06-27 22:44:51,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:51,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928553965] [2024-06-27 22:44:51,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:51,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:52,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:52,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928553965] [2024-06-27 22:44:52,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928553965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:52,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:52,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:52,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883681423] [2024-06-27 22:44:52,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:52,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:52,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:52,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:52,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:52,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:44:52,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 578 transitions, 8522 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:52,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:52,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:44:52,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:54,394 INFO L124 PetriNetUnfolderBase]: 2462/5289 cut-off events. [2024-06-27 22:44:54,395 INFO L125 PetriNetUnfolderBase]: For 571952/571979 co-relation queries the response was YES. [2024-06-27 22:44:54,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38339 conditions, 5289 events. 2462/5289 cut-off events. For 571952/571979 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 44968 event pairs, 921 based on Foata normal form. 8/4893 useless extension candidates. Maximal degree in co-relation 38065. Up to 4084 conditions per place. [2024-06-27 22:44:54,499 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 435 selfloop transitions, 148 changer transitions 0/599 dead transitions. [2024-06-27 22:44:54,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 599 transitions, 10176 flow [2024-06-27 22:44:54,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:44:54,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:44:54,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-27 22:44:54,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184210526315789 [2024-06-27 22:44:54,500 INFO L175 Difference]: Start difference. First operand has 545 places, 578 transitions, 8522 flow. Second operand 10 states and 197 transitions. [2024-06-27 22:44:54,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 599 transitions, 10176 flow [2024-06-27 22:45:05,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 599 transitions, 9908 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 22:45:05,193 INFO L231 Difference]: Finished difference. Result has 548 places, 581 transitions, 8711 flow [2024-06-27 22:45:05,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8254, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8711, PETRI_PLACES=548, PETRI_TRANSITIONS=581} [2024-06-27 22:45:05,194 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 506 predicate places. [2024-06-27 22:45:05,194 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 581 transitions, 8711 flow [2024-06-27 22:45:05,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:05,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:05,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:05,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 22:45:05,195 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:05,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:05,195 INFO L85 PathProgramCache]: Analyzing trace with hash 491952648, now seen corresponding path program 22 times [2024-06-27 22:45:05,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:05,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410248870] [2024-06-27 22:45:05,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:05,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:06,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:06,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410248870] [2024-06-27 22:45:06,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410248870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:06,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:06,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:45:06,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369357425] [2024-06-27 22:45:06,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:06,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:45:06,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:06,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:45:06,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:45:06,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:45:06,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 581 transitions, 8711 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:06,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:06,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:45:06,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:08,692 INFO L124 PetriNetUnfolderBase]: 2480/5340 cut-off events. [2024-06-27 22:45:08,694 INFO L125 PetriNetUnfolderBase]: For 584066/584093 co-relation queries the response was YES. [2024-06-27 22:45:08,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38966 conditions, 5340 events. 2480/5340 cut-off events. For 584066/584093 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 45579 event pairs, 926 based on Foata normal form. 8/4938 useless extension candidates. Maximal degree in co-relation 38690. Up to 4135 conditions per place. [2024-06-27 22:45:08,787 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 458 selfloop transitions, 127 changer transitions 0/601 dead transitions. [2024-06-27 22:45:08,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 601 transitions, 10341 flow [2024-06-27 22:45:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:45:08,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:45:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-27 22:45:08,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 22:45:08,789 INFO L175 Difference]: Start difference. First operand has 548 places, 581 transitions, 8711 flow. Second operand 10 states and 200 transitions. [2024-06-27 22:45:08,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 601 transitions, 10341 flow [2024-06-27 22:45:18,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 601 transitions, 9987 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 22:45:18,639 INFO L231 Difference]: Finished difference. Result has 552 places, 583 transitions, 8741 flow [2024-06-27 22:45:18,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8359, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8741, PETRI_PLACES=552, PETRI_TRANSITIONS=583} [2024-06-27 22:45:18,640 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 510 predicate places. [2024-06-27 22:45:18,640 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 583 transitions, 8741 flow [2024-06-27 22:45:18,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:18,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:18,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:18,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 22:45:18,640 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:18,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:18,641 INFO L85 PathProgramCache]: Analyzing trace with hash 270544758, now seen corresponding path program 23 times [2024-06-27 22:45:18,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:18,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663238022] [2024-06-27 22:45:18,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:18,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:20,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:20,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663238022] [2024-06-27 22:45:20,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663238022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:20,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:20,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:45:20,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794414686] [2024-06-27 22:45:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:20,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:45:20,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:20,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:45:20,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:45:20,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:45:20,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 583 transitions, 8741 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:20,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:20,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:45:20,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:22,368 INFO L124 PetriNetUnfolderBase]: 2494/5374 cut-off events. [2024-06-27 22:45:22,369 INFO L125 PetriNetUnfolderBase]: For 590791/590818 co-relation queries the response was YES. [2024-06-27 22:45:22,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39208 conditions, 5374 events. 2494/5374 cut-off events. For 590791/590818 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 45921 event pairs, 942 based on Foata normal form. 8/4969 useless extension candidates. Maximal degree in co-relation 38930. Up to 4221 conditions per place. [2024-06-27 22:45:22,466 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 455 selfloop transitions, 127 changer transitions 0/598 dead transitions. [2024-06-27 22:45:22,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 598 transitions, 10123 flow [2024-06-27 22:45:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:45:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:45:22,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 22:45:22,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-27 22:45:22,467 INFO L175 Difference]: Start difference. First operand has 552 places, 583 transitions, 8741 flow. Second operand 10 states and 194 transitions. [2024-06-27 22:45:22,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 598 transitions, 10123 flow [2024-06-27 22:45:33,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 598 transitions, 9829 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 22:45:33,672 INFO L231 Difference]: Finished difference. Result has 555 places, 584 transitions, 8741 flow [2024-06-27 22:45:33,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8447, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8741, PETRI_PLACES=555, PETRI_TRANSITIONS=584} [2024-06-27 22:45:33,672 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 513 predicate places. [2024-06-27 22:45:33,672 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 584 transitions, 8741 flow [2024-06-27 22:45:33,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:33,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:33,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:33,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 22:45:33,673 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:33,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:33,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1236432436, now seen corresponding path program 24 times [2024-06-27 22:45:33,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:33,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474386415] [2024-06-27 22:45:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:33,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:35,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:35,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474386415] [2024-06-27 22:45:35,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474386415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:35,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:35,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:45:35,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812611901] [2024-06-27 22:45:35,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:35,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:45:35,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:35,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:45:35,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:45:35,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:45:35,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 584 transitions, 8741 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:35,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:35,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:45:35,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:36,932 INFO L124 PetriNetUnfolderBase]: 2512/5424 cut-off events. [2024-06-27 22:45:36,932 INFO L125 PetriNetUnfolderBase]: For 600437/600464 co-relation queries the response was YES. [2024-06-27 22:45:37,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39644 conditions, 5424 events. 2512/5424 cut-off events. For 600437/600464 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 46492 event pairs, 944 based on Foata normal form. 8/5015 useless extension candidates. Maximal degree in co-relation 39365. Up to 4212 conditions per place. [2024-06-27 22:45:37,049 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 459 selfloop transitions, 129 changer transitions 0/604 dead transitions. [2024-06-27 22:45:37,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 604 transitions, 10381 flow [2024-06-27 22:45:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:45:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:45:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-27 22:45:37,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236842105263158 [2024-06-27 22:45:37,051 INFO L175 Difference]: Start difference. First operand has 555 places, 584 transitions, 8741 flow. Second operand 10 states and 199 transitions. [2024-06-27 22:45:37,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 604 transitions, 10381 flow [2024-06-27 22:45:48,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 604 transitions, 10103 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:45:48,962 INFO L231 Difference]: Finished difference. Result has 558 places, 586 transitions, 8853 flow [2024-06-27 22:45:48,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8463, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8853, PETRI_PLACES=558, PETRI_TRANSITIONS=586} [2024-06-27 22:45:48,963 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 516 predicate places. [2024-06-27 22:45:48,963 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 586 transitions, 8853 flow [2024-06-27 22:45:48,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:48,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:48,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:48,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 22:45:48,964 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:48,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:48,964 INFO L85 PathProgramCache]: Analyzing trace with hash -389566218, now seen corresponding path program 25 times [2024-06-27 22:45:48,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:48,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520637587] [2024-06-27 22:45:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:48,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:50,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:50,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:50,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520637587] [2024-06-27 22:45:50,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520637587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:50,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:50,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:45:50,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278537859] [2024-06-27 22:45:50,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:50,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:45:50,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:50,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:45:50,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:45:50,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 22:45:50,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 586 transitions, 8853 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:50,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:50,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 22:45:50,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:52,579 INFO L124 PetriNetUnfolderBase]: 2547/5517 cut-off events. [2024-06-27 22:45:52,579 INFO L125 PetriNetUnfolderBase]: For 656432/656459 co-relation queries the response was YES. [2024-06-27 22:45:52,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41067 conditions, 5517 events. 2547/5517 cut-off events. For 656432/656459 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 47539 event pairs, 967 based on Foata normal form. 4/5097 useless extension candidates. Maximal degree in co-relation 40786. Up to 4274 conditions per place. [2024-06-27 22:45:52,698 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 478 selfloop transitions, 114 changer transitions 0/608 dead transitions. [2024-06-27 22:45:52,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 608 transitions, 10935 flow [2024-06-27 22:45:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:45:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:45:52,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-27 22:45:52,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5368421052631579 [2024-06-27 22:45:52,699 INFO L175 Difference]: Start difference. First operand has 558 places, 586 transitions, 8853 flow. Second operand 10 states and 204 transitions. [2024-06-27 22:45:52,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 608 transitions, 10935 flow Killed by 15