./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe016_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe016_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 04:13:57,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:13:57,537 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:13:57,540 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:13:57,541 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:13:57,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:13:57,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:13:57,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:13:57,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:13:57,557 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:13:57,557 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:13:57,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:13:57,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:13:57,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:13:57,559 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:13:57,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:13:57,559 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:13:57,560 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:13:57,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:13:57,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:13:57,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:13:57,561 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:13:57,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:13:57,561 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:13:57,561 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:13:57,562 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:13:57,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:13:57,562 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:13:57,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:13:57,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:13:57,563 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:13:57,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:13:57,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:13:57,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:13:57,564 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:13:57,564 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:13:57,564 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:13:57,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:13:57,565 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:13:57,565 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:13:57,565 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:13:57,566 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:13:57,566 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:13:57,566 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:13:57,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:13:57,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:13:57,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:13:57,742 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:13:57,743 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:13:57,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe016_rmo.oepc.yml/witness.yml [2024-06-28 04:13:57,951 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:13:57,951 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:13:57,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i [2024-06-28 04:13:58,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:13:59,251 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:13:59,253 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i [2024-06-28 04:13:59,267 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cbdd72e5/47e48d2244fe4300bca6f4fff7875cd1/FLAG21bb36468 [2024-06-28 04:13:59,282 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cbdd72e5/47e48d2244fe4300bca6f4fff7875cd1 [2024-06-28 04:13:59,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:13:59,284 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:13:59,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:13:59,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:13:59,290 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:13:59,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:13:57" (1/2) ... [2024-06-28 04:13:59,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d23232 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:13:59, skipping insertion in model container [2024-06-28 04:13:59,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:13:57" (1/2) ... [2024-06-28 04:13:59,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21d356ba and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:13:59, skipping insertion in model container [2024-06-28 04:13:59,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:13:59" (2/2) ... [2024-06-28 04:13:59,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d23232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:13:59, skipping insertion in model container [2024-06-28 04:13:59,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:13:59" (2/2) ... [2024-06-28 04:13:59,294 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:13:59,453 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:13:59,454 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((((((((((((((((((((! multithreaded || y$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2)))) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0) [2024-06-28 04:13:59,454 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] (((((((((((((((((((((((((((((((((((((((! multithreaded || y$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2)))) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0) [2024-06-28 04:13:59,454 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((((((((((((((((((((! multithreaded || y$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2)))) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0) [2024-06-28 04:13:59,455 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] (((((((((((((((((((((((((((((((((((((((! multithreaded || y$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2)))) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$w_buff0_used == (_Bool)0) [2024-06-28 04:13:59,455 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:13:59,455 INFO L106 edCorrectnessWitness]: ghost_update [L852-L852] multithreaded = 1; [2024-06-28 04:13:59,492 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:13:59,802 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:13:59,813 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 04:14:00,007 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:14:00,042 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:14:00,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:00 WrapperNode [2024-06-28 04:14:00,043 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:14:00,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:14:00,044 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:14:00,044 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:14:00,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:00" (1/1) ... [2024-06-28 04:14:00,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:00" (1/1) ... [2024-06-28 04:14:00,096 INFO L138 Inliner]: procedures = 176, calls = 118, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 331 [2024-06-28 04:14:00,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:14:00,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:14:00,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:14:00,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:14:00,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:00" (1/1) ... [2024-06-28 04:14:00,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:00" (1/1) ... [2024-06-28 04:14:00,112 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:00" (1/1) ... [2024-06-28 04:14:00,130 INFO L175 MemorySlicer]: Split 72 memory accesses to 2 slices as follows [2, 70]. 97 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-06-28 04:14:00,130 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:00" (1/1) ... [2024-06-28 04:14:00,131 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:00" (1/1) ... [2024-06-28 04:14:00,145 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:00" (1/1) ... [2024-06-28 04:14:00,147 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:00" (1/1) ... [2024-06-28 04:14:00,150 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:00" (1/1) ... [2024-06-28 04:14:00,152 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:00" (1/1) ... [2024-06-28 04:14:00,156 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:14:00,157 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:14:00,157 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:14:00,157 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:14:00,158 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:00" (1/1) ... [2024-06-28 04:14:00,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:14:00,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:14:00,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 04:14:00,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 04:14:00,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 04:14:00,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 04:14:00,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 04:14:00,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 04:14:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:14:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:14:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:14:00,243 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:14:00,243 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:14:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:14:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 04:14:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 04:14:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 04:14:00,245 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 04:14:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:14:00,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 04:14:00,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:14:00,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:14:00,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:14:00,248 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 04:14:00,429 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:14:00,431 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:14:01,033 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:14:01,034 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:14:01,566 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:14:01,566 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:14:01,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:14:01 BoogieIcfgContainer [2024-06-28 04:14:01,567 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:14:01,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:14:01,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:14:01,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:14:01,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:13:57" (1/4) ... [2024-06-28 04:14:01,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10911779 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:14:01, skipping insertion in model container [2024-06-28 04:14:01,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:13:59" (2/4) ... [2024-06-28 04:14:01,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10911779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:14:01, skipping insertion in model container [2024-06-28 04:14:01,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:14:00" (3/4) ... [2024-06-28 04:14:01,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10911779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:14:01, skipping insertion in model container [2024-06-28 04:14:01,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:14:01" (4/4) ... [2024-06-28 04:14:01,578 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.oepc.i [2024-06-28 04:14:01,592 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:14:01,593 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 04:14:01,593 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:14:01,650 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:14:01,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 04:14:01,715 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-28 04:14:01,716 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:14:01,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 04:14:01,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 04:14:01,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-28 04:14:01,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:14:01,731 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;@6cb59126, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:14:01,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 04:14:01,735 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:14:01,735 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 04:14:01,735 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:14:01,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:01,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:14:01,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:01,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:01,740 INFO L85 PathProgramCache]: Analyzing trace with hash 929216941, now seen corresponding path program 1 times [2024-06-28 04:14:01,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:01,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760754487] [2024-06-28 04:14:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:01,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:03,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:03,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760754487] [2024-06-28 04:14:03,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760754487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:03,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:03,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:14:03,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067256694] [2024-06-28 04:14:03,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:03,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:14:03,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:03,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:14:03,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:14:03,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 04:14:03,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:03,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:03,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 04:14:03,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:05,251 INFO L124 PetriNetUnfolderBase]: 5566/7763 cut-off events. [2024-06-28 04:14:05,251 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-06-28 04:14:05,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15709 conditions, 7763 events. 5566/7763 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 40429 event pairs, 4068 based on Foata normal form. 1/7635 useless extension candidates. Maximal degree in co-relation 15696. Up to 7674 conditions per place. [2024-06-28 04:14:05,295 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 46 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 04:14:05,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 241 flow [2024-06-28 04:14:05,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:14:05,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:14:05,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-06-28 04:14:05,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 04:14:05,305 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 91 transitions. [2024-06-28 04:14:05,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 241 flow [2024-06-28 04:14:05,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 234 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 04:14:05,310 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-28 04:14:05,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-28 04:14:05,314 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-28 04:14:05,314 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-28 04:14:05,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:05,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:05,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:05,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:14:05,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:05,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:05,315 INFO L85 PathProgramCache]: Analyzing trace with hash -375678516, now seen corresponding path program 1 times [2024-06-28 04:14:05,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:05,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805539898] [2024-06-28 04:14:05,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:05,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:07,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:07,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805539898] [2024-06-28 04:14:07,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805539898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:07,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:07,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 04:14:07,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796799843] [2024-06-28 04:14:07,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:07,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 04:14:07,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:07,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 04:14:07,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 04:14:07,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 04:14:07,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:07,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:07,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 04:14:07,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:09,309 INFO L124 PetriNetUnfolderBase]: 5556/7744 cut-off events. [2024-06-28 04:14:09,310 INFO L125 PetriNetUnfolderBase]: For 1504/1514 co-relation queries the response was YES. [2024-06-28 04:14:09,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17958 conditions, 7744 events. 5556/7744 cut-off events. For 1504/1514 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 40112 event pairs, 3547 based on Foata normal form. 7/7746 useless extension candidates. Maximal degree in co-relation 17946. Up to 7633 conditions per place. [2024-06-28 04:14:09,349 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 59 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-06-28 04:14:09,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 345 flow [2024-06-28 04:14:09,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:14:09,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:14:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-06-28 04:14:09,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2024-06-28 04:14:09,351 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 120 transitions. [2024-06-28 04:14:09,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 345 flow [2024-06-28 04:14:09,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 76 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:14:09,354 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-28 04:14:09,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-28 04:14:09,354 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-28 04:14:09,355 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-28 04:14:09,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:09,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:09,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:09,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:14:09,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:09,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:09,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1238869164, now seen corresponding path program 1 times [2024-06-28 04:14:09,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:09,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307761824] [2024-06-28 04:14:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:11,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:11,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307761824] [2024-06-28 04:14:11,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307761824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:11,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:11,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 04:14:11,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399889727] [2024-06-28 04:14:11,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:11,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 04:14:11,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:11,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 04:14:11,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 04:14:11,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 04:14:11,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:11,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:11,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 04:14:11,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:13,783 INFO L124 PetriNetUnfolderBase]: 6725/9323 cut-off events. [2024-06-28 04:14:13,783 INFO L125 PetriNetUnfolderBase]: For 4925/4925 co-relation queries the response was YES. [2024-06-28 04:14:13,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24128 conditions, 9323 events. 6725/9323 cut-off events. For 4925/4925 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 48145 event pairs, 3191 based on Foata normal form. 7/9323 useless extension candidates. Maximal degree in co-relation 24114. Up to 9079 conditions per place. [2024-06-28 04:14:13,828 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 89 selfloop transitions, 19 changer transitions 0/115 dead transitions. [2024-06-28 04:14:13,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 115 transitions, 613 flow [2024-06-28 04:14:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:14:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:14:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-28 04:14:13,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-06-28 04:14:13,830 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 5 states and 155 transitions. [2024-06-28 04:14:13,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 115 transitions, 613 flow [2024-06-28 04:14:13,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 115 transitions, 582 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 04:14:13,834 INFO L231 Difference]: Finished difference. Result has 62 places, 68 transitions, 318 flow [2024-06-28 04:14:13,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=62, PETRI_TRANSITIONS=68} [2024-06-28 04:14:13,835 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-28 04:14:13,835 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 68 transitions, 318 flow [2024-06-28 04:14:13,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:13,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:13,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:13,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:14:13,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:13,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:13,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1705647223, now seen corresponding path program 1 times [2024-06-28 04:14:13,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:13,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683743930] [2024-06-28 04:14:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:13,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:16,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:16,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683743930] [2024-06-28 04:14:16,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683743930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:16,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:16,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:14:16,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066712227] [2024-06-28 04:14:16,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:16,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:14:16,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:16,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:14:16,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:14:16,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-06-28 04:14:16,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 68 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:16,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:16,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-06-28 04:14:16,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:18,554 INFO L124 PetriNetUnfolderBase]: 6895/9589 cut-off events. [2024-06-28 04:14:18,554 INFO L125 PetriNetUnfolderBase]: For 11767/11767 co-relation queries the response was YES. [2024-06-28 04:14:18,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29176 conditions, 9589 events. 6895/9589 cut-off events. For 11767/11767 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 50008 event pairs, 2460 based on Foata normal form. 32/9614 useless extension candidates. Maximal degree in co-relation 29159. Up to 9063 conditions per place. [2024-06-28 04:14:18,606 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 101 selfloop transitions, 22 changer transitions 0/130 dead transitions. [2024-06-28 04:14:18,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 130 transitions, 762 flow [2024-06-28 04:14:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:14:18,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:14:18,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-28 04:14:18,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801282051282052 [2024-06-28 04:14:18,624 INFO L175 Difference]: Start difference. First operand has 62 places, 68 transitions, 318 flow. Second operand 6 states and 181 transitions. [2024-06-28 04:14:18,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 130 transitions, 762 flow [2024-06-28 04:14:18,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 130 transitions, 754 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 04:14:18,631 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 383 flow [2024-06-28 04:14:18,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=383, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2024-06-28 04:14:18,649 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2024-06-28 04:14:18,649 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 383 flow [2024-06-28 04:14:18,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:18,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:18,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:18,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:14:18,650 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:18,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:18,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1778942057, now seen corresponding path program 1 times [2024-06-28 04:14:18,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:18,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969997626] [2024-06-28 04:14:18,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:18,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:20,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:20,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:20,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969997626] [2024-06-28 04:14:20,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969997626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:20,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:20,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:14:20,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940454820] [2024-06-28 04:14:20,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:20,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:14:20,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:20,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:14:20,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:14:20,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:14:20,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:20,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:20,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:14:20,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:21,897 INFO L124 PetriNetUnfolderBase]: 6886/9584 cut-off events. [2024-06-28 04:14:21,897 INFO L125 PetriNetUnfolderBase]: For 16914/16914 co-relation queries the response was YES. [2024-06-28 04:14:21,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31492 conditions, 9584 events. 6886/9584 cut-off events. For 16914/16914 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 49971 event pairs, 3060 based on Foata normal form. 3/9583 useless extension candidates. Maximal degree in co-relation 31471. Up to 9469 conditions per place. [2024-06-28 04:14:21,940 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 78 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2024-06-28 04:14:21,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 94 transitions, 624 flow [2024-06-28 04:14:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:14:21,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:14:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 04:14:21,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2024-06-28 04:14:21,949 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 383 flow. Second operand 5 states and 118 transitions. [2024-06-28 04:14:21,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 94 transitions, 624 flow [2024-06-28 04:14:21,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 94 transitions, 571 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 04:14:21,957 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 379 flow [2024-06-28 04:14:21,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=379, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2024-06-28 04:14:21,959 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2024-06-28 04:14:21,959 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 379 flow [2024-06-28 04:14:21,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:21,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:21,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:21,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:14:21,960 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:21,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:21,960 INFO L85 PathProgramCache]: Analyzing trace with hash -955614810, now seen corresponding path program 1 times [2024-06-28 04:14:21,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:21,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198288370] [2024-06-28 04:14:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:21,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:24,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:24,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198288370] [2024-06-28 04:14:24,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198288370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:24,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:24,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:14:24,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669009385] [2024-06-28 04:14:24,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:24,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:14:24,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:24,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:14:24,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:14:24,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:14:24,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 379 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:24,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:24,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:14:24,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:26,596 INFO L124 PetriNetUnfolderBase]: 6904/9602 cut-off events. [2024-06-28 04:14:26,597 INFO L125 PetriNetUnfolderBase]: For 19735/19735 co-relation queries the response was YES. [2024-06-28 04:14:26,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32004 conditions, 9602 events. 6904/9602 cut-off events. For 19735/19735 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 50005 event pairs, 3051 based on Foata normal form. 6/9601 useless extension candidates. Maximal degree in co-relation 31980. Up to 9348 conditions per place. [2024-06-28 04:14:26,646 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 85 selfloop transitions, 24 changer transitions 0/115 dead transitions. [2024-06-28 04:14:26,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 115 transitions, 750 flow [2024-06-28 04:14:26,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:14:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:14:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 04:14:26,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-06-28 04:14:26,648 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 379 flow. Second operand 6 states and 152 transitions. [2024-06-28 04:14:26,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 115 transitions, 750 flow [2024-06-28 04:14:26,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 115 transitions, 728 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 04:14:26,658 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 466 flow [2024-06-28 04:14:26,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=466, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2024-06-28 04:14:26,661 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-06-28 04:14:26,661 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 466 flow [2024-06-28 04:14:26,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:26,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:26,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:26,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:14:26,662 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:26,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:26,662 INFO L85 PathProgramCache]: Analyzing trace with hash 166367880, now seen corresponding path program 2 times [2024-06-28 04:14:26,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:26,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222651199] [2024-06-28 04:14:26,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:26,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:29,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:29,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222651199] [2024-06-28 04:14:29,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222651199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:29,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:29,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:14:29,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031237311] [2024-06-28 04:14:29,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:29,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:14:29,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:29,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:14:29,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:14:29,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:14:29,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 466 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:29,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:29,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:14:29,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:31,019 INFO L124 PetriNetUnfolderBase]: 6859/9520 cut-off events. [2024-06-28 04:14:31,019 INFO L125 PetriNetUnfolderBase]: For 23934/23934 co-relation queries the response was YES. [2024-06-28 04:14:31,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32747 conditions, 9520 events. 6859/9520 cut-off events. For 23934/23934 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 49284 event pairs, 3071 based on Foata normal form. 3/9510 useless extension candidates. Maximal degree in co-relation 32721. Up to 9279 conditions per place. [2024-06-28 04:14:31,065 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 77 selfloop transitions, 26 changer transitions 0/109 dead transitions. [2024-06-28 04:14:31,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 109 transitions, 756 flow [2024-06-28 04:14:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:14:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:14:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 04:14:31,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-28 04:14:31,067 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 466 flow. Second operand 6 states and 146 transitions. [2024-06-28 04:14:31,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 109 transitions, 756 flow [2024-06-28 04:14:31,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 109 transitions, 719 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 04:14:31,077 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 500 flow [2024-06-28 04:14:31,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=500, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2024-06-28 04:14:31,078 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2024-06-28 04:14:31,078 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 500 flow [2024-06-28 04:14:31,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:31,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:31,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:31,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:14:31,079 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:31,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:31,079 INFO L85 PathProgramCache]: Analyzing trace with hash -949892954, now seen corresponding path program 1 times [2024-06-28 04:14:31,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:31,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324883301] [2024-06-28 04:14:31,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:31,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:32,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:32,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324883301] [2024-06-28 04:14:32,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324883301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:32,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:32,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:14:32,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773202085] [2024-06-28 04:14:32,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:32,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:14:32,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:32,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:14:32,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:14:32,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:14:32,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 500 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:32,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:32,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:14:32,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:34,832 INFO L124 PetriNetUnfolderBase]: 6844/9510 cut-off events. [2024-06-28 04:14:34,832 INFO L125 PetriNetUnfolderBase]: For 28023/28023 co-relation queries the response was YES. [2024-06-28 04:14:34,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33427 conditions, 9510 events. 6844/9510 cut-off events. For 28023/28023 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 49232 event pairs, 2897 based on Foata normal form. 6/9512 useless extension candidates. Maximal degree in co-relation 33400. Up to 9360 conditions per place. [2024-06-28 04:14:34,882 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 94 selfloop transitions, 13 changer transitions 0/113 dead transitions. [2024-06-28 04:14:34,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 113 transitions, 814 flow [2024-06-28 04:14:34,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:14:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:14:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 04:14:34,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-06-28 04:14:34,885 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 500 flow. Second operand 6 states and 141 transitions. [2024-06-28 04:14:34,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 113 transitions, 814 flow [2024-06-28 04:14:34,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 113 transitions, 775 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 04:14:34,907 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 525 flow [2024-06-28 04:14:34,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=525, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-06-28 04:14:34,908 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 24 predicate places. [2024-06-28 04:14:34,908 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 525 flow [2024-06-28 04:14:34,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:34,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:34,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:34,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:14:34,909 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:34,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:34,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1774019815, now seen corresponding path program 1 times [2024-06-28 04:14:34,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:34,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312950669] [2024-06-28 04:14:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:34,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:37,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:37,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312950669] [2024-06-28 04:14:37,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312950669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:37,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:37,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:14:37,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745812069] [2024-06-28 04:14:37,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:37,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:14:37,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:37,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:14:37,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:14:37,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:14:37,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 525 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:37,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:37,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:14:37,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:40,102 INFO L124 PetriNetUnfolderBase]: 7044/9813 cut-off events. [2024-06-28 04:14:40,102 INFO L125 PetriNetUnfolderBase]: For 36821/36821 co-relation queries the response was YES. [2024-06-28 04:14:40,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36154 conditions, 9813 events. 7044/9813 cut-off events. For 36821/36821 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 51285 event pairs, 2962 based on Foata normal form. 30/9836 useless extension candidates. Maximal degree in co-relation 36125. Up to 9328 conditions per place. [2024-06-28 04:14:40,151 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 98 selfloop transitions, 28 changer transitions 0/132 dead transitions. [2024-06-28 04:14:40,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 923 flow [2024-06-28 04:14:40,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:14:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:14:40,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 04:14:40,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-28 04:14:40,153 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 525 flow. Second operand 7 states and 175 transitions. [2024-06-28 04:14:40,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 923 flow [2024-06-28 04:14:40,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 132 transitions, 885 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 04:14:40,173 INFO L231 Difference]: Finished difference. Result has 82 places, 84 transitions, 586 flow [2024-06-28 04:14:40,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=586, PETRI_PLACES=82, PETRI_TRANSITIONS=84} [2024-06-28 04:14:40,175 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-28 04:14:40,175 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 586 flow [2024-06-28 04:14:40,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:40,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:40,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:40,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:14:40,178 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:40,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:40,178 INFO L85 PathProgramCache]: Analyzing trace with hash 965785575, now seen corresponding path program 2 times [2024-06-28 04:14:40,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:40,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620142751] [2024-06-28 04:14:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:40,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:42,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:42,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620142751] [2024-06-28 04:14:42,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620142751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:42,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:42,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:14:42,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107634246] [2024-06-28 04:14:42,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:42,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:14:42,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:42,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:14:42,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:14:42,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:14:42,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 586 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:42,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:42,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:14:42,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:44,885 INFO L124 PetriNetUnfolderBase]: 7088/9883 cut-off events. [2024-06-28 04:14:44,886 INFO L125 PetriNetUnfolderBase]: For 45030/45030 co-relation queries the response was YES. [2024-06-28 04:14:44,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38481 conditions, 9883 events. 7088/9883 cut-off events. For 45030/45030 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 51410 event pairs, 3024 based on Foata normal form. 6/9876 useless extension candidates. Maximal degree in co-relation 38451. Up to 9584 conditions per place. [2024-06-28 04:14:44,966 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 93 selfloop transitions, 29 changer transitions 0/128 dead transitions. [2024-06-28 04:14:44,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 128 transitions, 962 flow [2024-06-28 04:14:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:14:44,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:14:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 04:14:44,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 04:14:44,968 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 586 flow. Second operand 7 states and 169 transitions. [2024-06-28 04:14:44,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 128 transitions, 962 flow [2024-06-28 04:14:45,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 128 transitions, 895 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 04:14:45,004 INFO L231 Difference]: Finished difference. Result has 84 places, 87 transitions, 625 flow [2024-06-28 04:14:45,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=625, PETRI_PLACES=84, PETRI_TRANSITIONS=87} [2024-06-28 04:14:45,005 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 29 predicate places. [2024-06-28 04:14:45,005 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 87 transitions, 625 flow [2024-06-28 04:14:45,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:45,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:45,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:45,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:14:45,006 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:45,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:45,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1980940165, now seen corresponding path program 3 times [2024-06-28 04:14:45,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:45,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158585241] [2024-06-28 04:14:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:45,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:47,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:47,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158585241] [2024-06-28 04:14:47,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158585241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:47,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:47,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:14:47,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955480949] [2024-06-28 04:14:47,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:47,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:14:47,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:47,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:14:47,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:14:47,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:14:47,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 87 transitions, 625 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:47,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:47,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:14:47,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:49,718 INFO L124 PetriNetUnfolderBase]: 7073/9862 cut-off events. [2024-06-28 04:14:49,719 INFO L125 PetriNetUnfolderBase]: For 53912/53912 co-relation queries the response was YES. [2024-06-28 04:14:49,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39906 conditions, 9862 events. 7073/9862 cut-off events. For 53912/53912 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 51216 event pairs, 2662 based on Foata normal form. 6/9855 useless extension candidates. Maximal degree in co-relation 39875. Up to 9247 conditions per place. [2024-06-28 04:14:49,791 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 92 selfloop transitions, 37 changer transitions 0/135 dead transitions. [2024-06-28 04:14:49,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 135 transitions, 1033 flow [2024-06-28 04:14:49,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:14:49,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:14:49,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 04:14:49,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47527472527472525 [2024-06-28 04:14:49,793 INFO L175 Difference]: Start difference. First operand has 84 places, 87 transitions, 625 flow. Second operand 7 states and 173 transitions. [2024-06-28 04:14:49,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 135 transitions, 1033 flow [2024-06-28 04:14:49,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 135 transitions, 953 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 04:14:49,820 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 673 flow [2024-06-28 04:14:49,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=673, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2024-06-28 04:14:49,820 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 31 predicate places. [2024-06-28 04:14:49,820 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 673 flow [2024-06-28 04:14:49,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:49,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:49,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:49,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:14:49,821 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:49,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:49,821 INFO L85 PathProgramCache]: Analyzing trace with hash -608793195, now seen corresponding path program 1 times [2024-06-28 04:14:49,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:49,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714329087] [2024-06-28 04:14:49,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:49,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:51,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:51,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714329087] [2024-06-28 04:14:51,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714329087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:51,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:51,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:14:51,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87503167] [2024-06-28 04:14:51,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:51,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:14:51,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:51,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:14:51,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:14:51,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:14:51,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 673 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:51,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:51,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:14:51,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:53,998 INFO L124 PetriNetUnfolderBase]: 7938/11199 cut-off events. [2024-06-28 04:14:53,999 INFO L125 PetriNetUnfolderBase]: For 70690/70690 co-relation queries the response was YES. [2024-06-28 04:14:54,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46913 conditions, 11199 events. 7938/11199 cut-off events. For 70690/70690 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 60310 event pairs, 3089 based on Foata normal form. 18/11208 useless extension candidates. Maximal degree in co-relation 46881. Up to 9939 conditions per place. [2024-06-28 04:14:54,059 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 133 selfloop transitions, 49 changer transitions 0/188 dead transitions. [2024-06-28 04:14:54,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 188 transitions, 1588 flow [2024-06-28 04:14:54,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:14:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:14:54,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 04:14:54,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 04:14:54,077 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 673 flow. Second operand 8 states and 208 transitions. [2024-06-28 04:14:54,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 188 transitions, 1588 flow [2024-06-28 04:14:54,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 188 transitions, 1440 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 04:14:54,126 INFO L231 Difference]: Finished difference. Result has 91 places, 117 transitions, 955 flow [2024-06-28 04:14:54,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=955, PETRI_PLACES=91, PETRI_TRANSITIONS=117} [2024-06-28 04:14:54,126 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-06-28 04:14:54,126 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 117 transitions, 955 flow [2024-06-28 04:14:54,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:54,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:54,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:54,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:14:54,127 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:54,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:54,127 INFO L85 PathProgramCache]: Analyzing trace with hash 284165585, now seen corresponding path program 2 times [2024-06-28 04:14:54,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:54,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119598153] [2024-06-28 04:14:54,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:54,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:56,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:56,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119598153] [2024-06-28 04:14:56,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119598153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:56,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:56,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:14:56,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379995502] [2024-06-28 04:14:56,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:56,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:14:56,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:56,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:14:56,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:14:57,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:14:57,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 117 transitions, 955 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:57,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:57,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:14:57,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:59,284 INFO L124 PetriNetUnfolderBase]: 8142/11527 cut-off events. [2024-06-28 04:14:59,284 INFO L125 PetriNetUnfolderBase]: For 88918/88920 co-relation queries the response was YES. [2024-06-28 04:14:59,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50482 conditions, 11527 events. 8142/11527 cut-off events. For 88918/88920 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 62995 event pairs, 2351 based on Foata normal form. 18/11536 useless extension candidates. Maximal degree in co-relation 50447. Up to 9394 conditions per place. [2024-06-28 04:14:59,347 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 111 selfloop transitions, 57 changer transitions 0/174 dead transitions. [2024-06-28 04:14:59,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 174 transitions, 1585 flow [2024-06-28 04:14:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:14:59,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:14:59,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 04:14:59,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49175824175824173 [2024-06-28 04:14:59,349 INFO L175 Difference]: Start difference. First operand has 91 places, 117 transitions, 955 flow. Second operand 7 states and 179 transitions. [2024-06-28 04:14:59,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 174 transitions, 1585 flow [2024-06-28 04:14:59,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 174 transitions, 1551 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 04:14:59,416 INFO L231 Difference]: Finished difference. Result has 96 places, 121 transitions, 1123 flow [2024-06-28 04:14:59,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1123, PETRI_PLACES=96, PETRI_TRANSITIONS=121} [2024-06-28 04:14:59,418 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 41 predicate places. [2024-06-28 04:14:59,418 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 121 transitions, 1123 flow [2024-06-28 04:14:59,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:59,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:59,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:59,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:14:59,419 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:59,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:59,419 INFO L85 PathProgramCache]: Analyzing trace with hash 402498165, now seen corresponding path program 1 times [2024-06-28 04:14:59,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:59,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248829436] [2024-06-28 04:14:59,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:59,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:02,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:02,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248829436] [2024-06-28 04:15:02,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248829436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:02,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:02,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:02,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132383490] [2024-06-28 04:15:02,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:02,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:02,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:02,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:02,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:02,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:15:02,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 121 transitions, 1123 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:02,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:02,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:15:02,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:04,891 INFO L124 PetriNetUnfolderBase]: 8064/11433 cut-off events. [2024-06-28 04:15:04,891 INFO L125 PetriNetUnfolderBase]: For 101798/101800 co-relation queries the response was YES. [2024-06-28 04:15:04,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51538 conditions, 11433 events. 8064/11433 cut-off events. For 101798/101800 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 62413 event pairs, 2309 based on Foata normal form. 36/11460 useless extension candidates. Maximal degree in co-relation 51501. Up to 9358 conditions per place. [2024-06-28 04:15:04,986 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 108 selfloop transitions, 57 changer transitions 0/171 dead transitions. [2024-06-28 04:15:04,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 171 transitions, 1597 flow [2024-06-28 04:15:04,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:04,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:04,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 04:15:04,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2024-06-28 04:15:04,988 INFO L175 Difference]: Start difference. First operand has 96 places, 121 transitions, 1123 flow. Second operand 7 states and 176 transitions. [2024-06-28 04:15:04,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 171 transitions, 1597 flow [2024-06-28 04:15:05,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 171 transitions, 1498 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 04:15:05,144 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 1150 flow [2024-06-28 04:15:05,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1150, PETRI_PLACES=99, PETRI_TRANSITIONS=121} [2024-06-28 04:15:05,144 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 44 predicate places. [2024-06-28 04:15:05,145 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 1150 flow [2024-06-28 04:15:05,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:05,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:05,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:05,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:15:05,145 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:05,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:05,146 INFO L85 PathProgramCache]: Analyzing trace with hash 110758265, now seen corresponding path program 2 times [2024-06-28 04:15:05,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:05,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456899432] [2024-06-28 04:15:05,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:05,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:07,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:07,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456899432] [2024-06-28 04:15:07,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456899432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:07,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:07,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:07,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495003601] [2024-06-28 04:15:07,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:07,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:07,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:07,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:07,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:07,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:15:07,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 1150 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:07,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:07,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:15:07,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:10,087 INFO L124 PetriNetUnfolderBase]: 8025/11365 cut-off events. [2024-06-28 04:15:10,087 INFO L125 PetriNetUnfolderBase]: For 94312/94326 co-relation queries the response was YES. [2024-06-28 04:15:10,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50866 conditions, 11365 events. 8025/11365 cut-off events. For 94312/94326 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 61910 event pairs, 1828 based on Foata normal form. 20/11348 useless extension candidates. Maximal degree in co-relation 50828. Up to 9071 conditions per place. [2024-06-28 04:15:10,160 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 99 selfloop transitions, 61 changer transitions 0/166 dead transitions. [2024-06-28 04:15:10,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 166 transitions, 1604 flow [2024-06-28 04:15:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 04:15:10,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 04:15:10,162 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 1150 flow. Second operand 7 states and 168 transitions. [2024-06-28 04:15:10,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 166 transitions, 1604 flow [2024-06-28 04:15:10,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 166 transitions, 1444 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 04:15:10,230 INFO L231 Difference]: Finished difference. Result has 99 places, 122 transitions, 1131 flow [2024-06-28 04:15:10,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1131, PETRI_PLACES=99, PETRI_TRANSITIONS=122} [2024-06-28 04:15:10,231 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 44 predicate places. [2024-06-28 04:15:10,231 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 122 transitions, 1131 flow [2024-06-28 04:15:10,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:10,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:10,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:10,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:15:10,231 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:10,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1741301532, now seen corresponding path program 1 times [2024-06-28 04:15:10,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:10,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535068335] [2024-06-28 04:15:10,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:10,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:12,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:12,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:12,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535068335] [2024-06-28 04:15:12,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535068335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:12,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:12,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:15:12,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005331680] [2024-06-28 04:15:12,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:12,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:15:12,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:12,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:15:12,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:15:12,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:15:12,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 122 transitions, 1131 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:12,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:12,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:15:12,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:14,091 INFO L124 PetriNetUnfolderBase]: 8051/11442 cut-off events. [2024-06-28 04:15:14,091 INFO L125 PetriNetUnfolderBase]: For 101022/101027 co-relation queries the response was YES. [2024-06-28 04:15:14,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51880 conditions, 11442 events. 8051/11442 cut-off events. For 101022/101027 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 62872 event pairs, 3276 based on Foata normal form. 10/11445 useless extension candidates. Maximal degree in co-relation 51841. Up to 11121 conditions per place. [2024-06-28 04:15:14,180 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 133 selfloop transitions, 17 changer transitions 0/156 dead transitions. [2024-06-28 04:15:14,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 156 transitions, 1611 flow [2024-06-28 04:15:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:15:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:15:14,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 04:15:14,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653846153846154 [2024-06-28 04:15:14,182 INFO L175 Difference]: Start difference. First operand has 99 places, 122 transitions, 1131 flow. Second operand 5 states and 121 transitions. [2024-06-28 04:15:14,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 156 transitions, 1611 flow [2024-06-28 04:15:14,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 156 transitions, 1464 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:14,298 INFO L231 Difference]: Finished difference. Result has 100 places, 132 transitions, 1125 flow [2024-06-28 04:15:14,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1125, PETRI_PLACES=100, PETRI_TRANSITIONS=132} [2024-06-28 04:15:14,298 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 45 predicate places. [2024-06-28 04:15:14,299 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 132 transitions, 1125 flow [2024-06-28 04:15:14,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:14,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:14,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:14,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:15:14,299 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:14,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:14,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1858993146, now seen corresponding path program 1 times [2024-06-28 04:15:14,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:14,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858745638] [2024-06-28 04:15:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:14,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:16,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:16,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858745638] [2024-06-28 04:15:16,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858745638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:16,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:16,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:15:16,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359766819] [2024-06-28 04:15:16,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:16,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:15:16,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:16,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:15:16,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:15:16,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:15:16,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 132 transitions, 1125 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:16,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:16,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:15:16,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:18,330 INFO L124 PetriNetUnfolderBase]: 8070/11473 cut-off events. [2024-06-28 04:15:18,331 INFO L125 PetriNetUnfolderBase]: For 112778/112786 co-relation queries the response was YES. [2024-06-28 04:15:18,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54133 conditions, 11473 events. 8070/11473 cut-off events. For 112778/112786 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 63171 event pairs, 3261 based on Foata normal form. 6/11472 useless extension candidates. Maximal degree in co-relation 54092. Up to 11195 conditions per place. [2024-06-28 04:15:18,541 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 142 selfloop transitions, 21 changer transitions 0/169 dead transitions. [2024-06-28 04:15:18,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 169 transitions, 1685 flow [2024-06-28 04:15:18,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:18,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:18,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 04:15:18,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44551282051282054 [2024-06-28 04:15:18,543 INFO L175 Difference]: Start difference. First operand has 100 places, 132 transitions, 1125 flow. Second operand 6 states and 139 transitions. [2024-06-28 04:15:18,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 169 transitions, 1685 flow [2024-06-28 04:15:18,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 169 transitions, 1649 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-28 04:15:18,612 INFO L231 Difference]: Finished difference. Result has 105 places, 140 transitions, 1240 flow [2024-06-28 04:15:18,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1240, PETRI_PLACES=105, PETRI_TRANSITIONS=140} [2024-06-28 04:15:18,612 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 50 predicate places. [2024-06-28 04:15:18,612 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 140 transitions, 1240 flow [2024-06-28 04:15:18,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:18,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:18,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:18,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:15:18,613 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:18,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:18,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1557222182, now seen corresponding path program 2 times [2024-06-28 04:15:18,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:18,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087616419] [2024-06-28 04:15:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:18,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:20,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:20,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087616419] [2024-06-28 04:15:20,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087616419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:20,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:20,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:15:20,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414669785] [2024-06-28 04:15:20,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:20,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:15:20,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:20,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:15:20,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:15:20,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:15:20,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 140 transitions, 1240 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:20,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:20,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:15:20,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:22,491 INFO L124 PetriNetUnfolderBase]: 8063/11464 cut-off events. [2024-06-28 04:15:22,491 INFO L125 PetriNetUnfolderBase]: For 127973/127981 co-relation queries the response was YES. [2024-06-28 04:15:22,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56376 conditions, 11464 events. 8063/11464 cut-off events. For 127973/127981 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 63011 event pairs, 3261 based on Foata normal form. 6/11463 useless extension candidates. Maximal degree in co-relation 56332. Up to 11199 conditions per place. [2024-06-28 04:15:22,567 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 139 selfloop transitions, 17 changer transitions 0/162 dead transitions. [2024-06-28 04:15:22,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 162 transitions, 1616 flow [2024-06-28 04:15:22,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:15:22,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:15:22,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 04:15:22,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45384615384615384 [2024-06-28 04:15:22,569 INFO L175 Difference]: Start difference. First operand has 105 places, 140 transitions, 1240 flow. Second operand 5 states and 118 transitions. [2024-06-28 04:15:22,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 162 transitions, 1616 flow [2024-06-28 04:15:22,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 162 transitions, 1538 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-28 04:15:22,693 INFO L231 Difference]: Finished difference. Result has 108 places, 140 transitions, 1210 flow [2024-06-28 04:15:22,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1210, PETRI_PLACES=108, PETRI_TRANSITIONS=140} [2024-06-28 04:15:22,694 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 53 predicate places. [2024-06-28 04:15:22,694 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 140 transitions, 1210 flow [2024-06-28 04:15:22,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:22,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:22,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:22,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:15:22,695 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:22,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:22,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1971795098, now seen corresponding path program 1 times [2024-06-28 04:15:22,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:22,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689051247] [2024-06-28 04:15:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:22,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:26,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:26,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:26,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689051247] [2024-06-28 04:15:26,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689051247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:26,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:26,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:26,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491318975] [2024-06-28 04:15:26,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:26,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:26,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:26,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:26,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:26,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:15:26,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 140 transitions, 1210 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:26,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:26,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:15:26,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:28,524 INFO L124 PetriNetUnfolderBase]: 8127/11542 cut-off events. [2024-06-28 04:15:28,525 INFO L125 PetriNetUnfolderBase]: For 139329/139354 co-relation queries the response was YES. [2024-06-28 04:15:28,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57513 conditions, 11542 events. 8127/11542 cut-off events. For 139329/139354 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 63545 event pairs, 2974 based on Foata normal form. 26/11556 useless extension candidates. Maximal degree in co-relation 57467. Up to 10859 conditions per place. [2024-06-28 04:15:28,604 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 138 selfloop transitions, 60 changer transitions 0/204 dead transitions. [2024-06-28 04:15:28,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 204 transitions, 2059 flow [2024-06-28 04:15:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:28,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 04:15:28,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489010989010989 [2024-06-28 04:15:28,607 INFO L175 Difference]: Start difference. First operand has 108 places, 140 transitions, 1210 flow. Second operand 7 states and 178 transitions. [2024-06-28 04:15:28,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 204 transitions, 2059 flow [2024-06-28 04:15:28,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 204 transitions, 2008 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:28,687 INFO L231 Difference]: Finished difference. Result has 111 places, 155 transitions, 1515 flow [2024-06-28 04:15:28,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1515, PETRI_PLACES=111, PETRI_TRANSITIONS=155} [2024-06-28 04:15:28,688 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-06-28 04:15:28,688 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 155 transitions, 1515 flow [2024-06-28 04:15:28,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:28,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:28,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:28,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:15:28,689 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:28,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:28,689 INFO L85 PathProgramCache]: Analyzing trace with hash -419533143, now seen corresponding path program 1 times [2024-06-28 04:15:28,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:28,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543712212] [2024-06-28 04:15:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:28,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:31,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:31,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543712212] [2024-06-28 04:15:31,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543712212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:31,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:31,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:31,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646029268] [2024-06-28 04:15:31,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:31,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:31,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:31,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:31,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:31,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:15:31,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 155 transitions, 1515 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:31,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:31,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:15:31,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:34,208 INFO L124 PetriNetUnfolderBase]: 8430/11956 cut-off events. [2024-06-28 04:15:34,208 INFO L125 PetriNetUnfolderBase]: For 155788/155804 co-relation queries the response was YES. [2024-06-28 04:15:34,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63435 conditions, 11956 events. 8430/11956 cut-off events. For 155788/155804 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 65575 event pairs, 2968 based on Foata normal form. 22/11973 useless extension candidates. Maximal degree in co-relation 63388. Up to 11475 conditions per place. [2024-06-28 04:15:34,323 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 185 selfloop transitions, 38 changer transitions 0/229 dead transitions. [2024-06-28 04:15:34,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 229 transitions, 2449 flow [2024-06-28 04:15:34,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:15:34,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:15:34,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 04:15:34,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 04:15:34,325 INFO L175 Difference]: Start difference. First operand has 111 places, 155 transitions, 1515 flow. Second operand 9 states and 208 transitions. [2024-06-28 04:15:34,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 229 transitions, 2449 flow [2024-06-28 04:15:34,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 229 transitions, 2356 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 04:15:34,592 INFO L231 Difference]: Finished difference. Result has 120 places, 174 transitions, 1737 flow [2024-06-28 04:15:34,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1737, PETRI_PLACES=120, PETRI_TRANSITIONS=174} [2024-06-28 04:15:34,592 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2024-06-28 04:15:34,592 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 174 transitions, 1737 flow [2024-06-28 04:15:34,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:34,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:34,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:34,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:15:34,593 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:34,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:34,594 INFO L85 PathProgramCache]: Analyzing trace with hash -419533484, now seen corresponding path program 2 times [2024-06-28 04:15:34,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:34,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744966027] [2024-06-28 04:15:34,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:34,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:37,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:37,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744966027] [2024-06-28 04:15:37,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744966027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:37,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:37,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:37,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475741028] [2024-06-28 04:15:37,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:37,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:37,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:37,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:37,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:37,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:15:37,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 174 transitions, 1737 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:37,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:37,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:15:37,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:39,883 INFO L124 PetriNetUnfolderBase]: 8525/12107 cut-off events. [2024-06-28 04:15:39,883 INFO L125 PetriNetUnfolderBase]: For 177133/177149 co-relation queries the response was YES. [2024-06-28 04:15:39,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67325 conditions, 12107 events. 8525/12107 cut-off events. For 177133/177149 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 66537 event pairs, 2986 based on Foata normal form. 18/12120 useless extension candidates. Maximal degree in co-relation 67274. Up to 11713 conditions per place. [2024-06-28 04:15:39,992 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 190 selfloop transitions, 33 changer transitions 0/229 dead transitions. [2024-06-28 04:15:39,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 229 transitions, 2512 flow [2024-06-28 04:15:39,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:39,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:39,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 04:15:39,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43990384615384615 [2024-06-28 04:15:39,995 INFO L175 Difference]: Start difference. First operand has 120 places, 174 transitions, 1737 flow. Second operand 8 states and 183 transitions. [2024-06-28 04:15:39,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 229 transitions, 2512 flow [2024-06-28 04:15:40,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 229 transitions, 2406 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-28 04:15:40,205 INFO L231 Difference]: Finished difference. Result has 126 places, 184 transitions, 1859 flow [2024-06-28 04:15:40,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1859, PETRI_PLACES=126, PETRI_TRANSITIONS=184} [2024-06-28 04:15:40,206 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 71 predicate places. [2024-06-28 04:15:40,206 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 184 transitions, 1859 flow [2024-06-28 04:15:40,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:40,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:40,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:40,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:15:40,206 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:40,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:40,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1402191365, now seen corresponding path program 2 times [2024-06-28 04:15:40,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:40,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632377581] [2024-06-28 04:15:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:40,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:42,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:42,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632377581] [2024-06-28 04:15:42,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632377581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:42,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:42,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:42,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64577982] [2024-06-28 04:15:42,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:42,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:42,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:42,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:42,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:42,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:15:42,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 184 transitions, 1859 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:42,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:42,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:15:42,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:45,240 INFO L124 PetriNetUnfolderBase]: 8551/12141 cut-off events. [2024-06-28 04:15:45,241 INFO L125 PetriNetUnfolderBase]: For 188845/188861 co-relation queries the response was YES. [2024-06-28 04:15:45,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68007 conditions, 12141 events. 8551/12141 cut-off events. For 188845/188861 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 66597 event pairs, 2958 based on Foata normal form. 22/12158 useless extension candidates. Maximal degree in co-relation 67953. Up to 11626 conditions per place. [2024-06-28 04:15:45,340 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 182 selfloop transitions, 41 changer transitions 0/229 dead transitions. [2024-06-28 04:15:45,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 229 transitions, 2538 flow [2024-06-28 04:15:45,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:45,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 04:15:45,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45054945054945056 [2024-06-28 04:15:45,342 INFO L175 Difference]: Start difference. First operand has 126 places, 184 transitions, 1859 flow. Second operand 7 states and 164 transitions. [2024-06-28 04:15:45,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 229 transitions, 2538 flow [2024-06-28 04:15:45,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 229 transitions, 2438 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:45,545 INFO L231 Difference]: Finished difference. Result has 129 places, 190 transitions, 1961 flow [2024-06-28 04:15:45,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1961, PETRI_PLACES=129, PETRI_TRANSITIONS=190} [2024-06-28 04:15:45,546 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 74 predicate places. [2024-06-28 04:15:45,546 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 190 transitions, 1961 flow [2024-06-28 04:15:45,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:45,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:45,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:45,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:15:45,547 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:45,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:45,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1401805415, now seen corresponding path program 3 times [2024-06-28 04:15:45,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:45,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54866022] [2024-06-28 04:15:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:45,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:48,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:48,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54866022] [2024-06-28 04:15:48,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54866022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:48,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:48,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:48,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319734010] [2024-06-28 04:15:48,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:48,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:48,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:48,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:48,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:48,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:15:48,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 190 transitions, 1961 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:48,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:48,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:15:48,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:50,659 INFO L124 PetriNetUnfolderBase]: 8621/12236 cut-off events. [2024-06-28 04:15:50,659 INFO L125 PetriNetUnfolderBase]: For 204546/204643 co-relation queries the response was YES. [2024-06-28 04:15:50,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70058 conditions, 12236 events. 8621/12236 cut-off events. For 204546/204643 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 67281 event pairs, 2976 based on Foata normal form. 62/12285 useless extension candidates. Maximal degree in co-relation 70002. Up to 11474 conditions per place. [2024-06-28 04:15:50,755 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 177 selfloop transitions, 56 changer transitions 0/239 dead transitions. [2024-06-28 04:15:50,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 239 transitions, 2798 flow [2024-06-28 04:15:50,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:15:50,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:15:50,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 04:15:50,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-28 04:15:50,757 INFO L175 Difference]: Start difference. First operand has 129 places, 190 transitions, 1961 flow. Second operand 6 states and 146 transitions. [2024-06-28 04:15:50,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 239 transitions, 2798 flow [2024-06-28 04:15:51,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 239 transitions, 2678 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 04:15:51,037 INFO L231 Difference]: Finished difference. Result has 132 places, 204 transitions, 2188 flow [2024-06-28 04:15:51,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1849, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2188, PETRI_PLACES=132, PETRI_TRANSITIONS=204} [2024-06-28 04:15:51,037 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 77 predicate places. [2024-06-28 04:15:51,037 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 204 transitions, 2188 flow [2024-06-28 04:15:51,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:51,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:51,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:51,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:15:51,038 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:51,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:51,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1402191706, now seen corresponding path program 3 times [2024-06-28 04:15:51,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:51,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455605610] [2024-06-28 04:15:51,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:51,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:53,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:53,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:53,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455605610] [2024-06-28 04:15:53,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455605610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:53,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:53,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:53,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130614831] [2024-06-28 04:15:53,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:53,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:53,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:53,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:53,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:53,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:15:53,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 204 transitions, 2188 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:53,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:53,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:15:53,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:56,982 INFO L124 PetriNetUnfolderBase]: 8690/12336 cut-off events. [2024-06-28 04:15:56,982 INFO L125 PetriNetUnfolderBase]: For 213516/213532 co-relation queries the response was YES. [2024-06-28 04:15:57,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72667 conditions, 12336 events. 8690/12336 cut-off events. For 213516/213532 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 67872 event pairs, 2998 based on Foata normal form. 18/12349 useless extension candidates. Maximal degree in co-relation 72609. Up to 11634 conditions per place. [2024-06-28 04:15:57,080 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 195 selfloop transitions, 74 changer transitions 0/275 dead transitions. [2024-06-28 04:15:57,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 275 transitions, 3122 flow [2024-06-28 04:15:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 04:15:57,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855769230769231 [2024-06-28 04:15:57,082 INFO L175 Difference]: Start difference. First operand has 132 places, 204 transitions, 2188 flow. Second operand 8 states and 202 transitions. [2024-06-28 04:15:57,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 275 transitions, 3122 flow [2024-06-28 04:15:57,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 275 transitions, 3038 flow, removed 41 selfloop flow, removed 1 redundant places. [2024-06-28 04:15:57,306 INFO L231 Difference]: Finished difference. Result has 140 places, 213 transitions, 2463 flow [2024-06-28 04:15:57,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2463, PETRI_PLACES=140, PETRI_TRANSITIONS=213} [2024-06-28 04:15:57,307 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 85 predicate places. [2024-06-28 04:15:57,307 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 213 transitions, 2463 flow [2024-06-28 04:15:57,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:57,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:57,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:57,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:15:57,308 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:15:57,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:57,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1652106885, now seen corresponding path program 1 times [2024-06-28 04:15:57,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:57,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120852335] [2024-06-28 04:15:57,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:57,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:59,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:59,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120852335] [2024-06-28 04:15:59,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120852335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:59,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:59,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:59,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354015507] [2024-06-28 04:15:59,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:59,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:59,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:59,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:59,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:59,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:15:59,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 213 transitions, 2463 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:59,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:59,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:15:59,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:02,228 INFO L124 PetriNetUnfolderBase]: 8834/12536 cut-off events. [2024-06-28 04:16:02,229 INFO L125 PetriNetUnfolderBase]: For 218956/218958 co-relation queries the response was YES. [2024-06-28 04:16:02,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72930 conditions, 12536 events. 8834/12536 cut-off events. For 218956/218958 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 69003 event pairs, 3230 based on Foata normal form. 8/12535 useless extension candidates. Maximal degree in co-relation 72868. Up to 11888 conditions per place. [2024-06-28 04:16:02,343 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 232 selfloop transitions, 37 changer transitions 0/275 dead transitions. [2024-06-28 04:16:02,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 275 transitions, 3509 flow [2024-06-28 04:16:02,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:16:02,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:16:02,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 04:16:02,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-28 04:16:02,348 INFO L175 Difference]: Start difference. First operand has 140 places, 213 transitions, 2463 flow. Second operand 7 states and 175 transitions. [2024-06-28 04:16:02,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 275 transitions, 3509 flow [2024-06-28 04:16:02,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 275 transitions, 3363 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:02,685 INFO L231 Difference]: Finished difference. Result has 144 places, 228 transitions, 2609 flow [2024-06-28 04:16:02,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2609, PETRI_PLACES=144, PETRI_TRANSITIONS=228} [2024-06-28 04:16:02,686 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 89 predicate places. [2024-06-28 04:16:02,686 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 228 transitions, 2609 flow [2024-06-28 04:16:02,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:02,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:02,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:02,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 04:16:02,687 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:02,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:02,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1029255689, now seen corresponding path program 2 times [2024-06-28 04:16:02,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:02,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906733755] [2024-06-28 04:16:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:02,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:04,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:04,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:04,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906733755] [2024-06-28 04:16:04,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906733755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:04,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:04,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:16:04,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200904608] [2024-06-28 04:16:04,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:04,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:16:04,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:04,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:16:04,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:16:04,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:16:04,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 228 transitions, 2609 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:04,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:04,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:16:04,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:07,754 INFO L124 PetriNetUnfolderBase]: 8956/12705 cut-off events. [2024-06-28 04:16:07,755 INFO L125 PetriNetUnfolderBase]: For 232027/232035 co-relation queries the response was YES. [2024-06-28 04:16:07,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76550 conditions, 12705 events. 8956/12705 cut-off events. For 232027/232035 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 70012 event pairs, 3221 based on Foata normal form. 12/12710 useless extension candidates. Maximal degree in co-relation 76485. Up to 12084 conditions per place. [2024-06-28 04:16:07,857 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 246 selfloop transitions, 39 changer transitions 0/291 dead transitions. [2024-06-28 04:16:07,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 291 transitions, 3673 flow [2024-06-28 04:16:07,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:16:07,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:16:07,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 04:16:07,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-28 04:16:07,859 INFO L175 Difference]: Start difference. First operand has 144 places, 228 transitions, 2609 flow. Second operand 8 states and 196 transitions. [2024-06-28 04:16:07,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 291 transitions, 3673 flow [2024-06-28 04:16:08,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 291 transitions, 3554 flow, removed 52 selfloop flow, removed 2 redundant places. [2024-06-28 04:16:08,168 INFO L231 Difference]: Finished difference. Result has 151 places, 239 transitions, 2769 flow [2024-06-28 04:16:08,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2510, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2769, PETRI_PLACES=151, PETRI_TRANSITIONS=239} [2024-06-28 04:16:08,168 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 96 predicate places. [2024-06-28 04:16:08,168 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 239 transitions, 2769 flow [2024-06-28 04:16:08,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:08,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:08,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:08,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 04:16:08,169 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:08,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:08,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1029250109, now seen corresponding path program 3 times [2024-06-28 04:16:08,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:08,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728956236] [2024-06-28 04:16:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:08,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:10,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:10,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728956236] [2024-06-28 04:16:10,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728956236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:10,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:10,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:16:10,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152422419] [2024-06-28 04:16:10,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:10,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:16:10,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:10,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:16:10,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:16:10,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:16:10,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 239 transitions, 2769 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:10,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:10,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:16:10,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:13,046 INFO L124 PetriNetUnfolderBase]: 8938/12684 cut-off events. [2024-06-28 04:16:13,046 INFO L125 PetriNetUnfolderBase]: For 247861/247863 co-relation queries the response was YES. [2024-06-28 04:16:13,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77268 conditions, 12684 events. 8938/12684 cut-off events. For 247861/247863 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 69963 event pairs, 3245 based on Foata normal form. 8/12683 useless extension candidates. Maximal degree in co-relation 77200. Up to 12074 conditions per place. [2024-06-28 04:16:13,165 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 234 selfloop transitions, 35 changer transitions 0/275 dead transitions. [2024-06-28 04:16:13,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 275 transitions, 3511 flow [2024-06-28 04:16:13,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:16:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:16:13,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 04:16:13,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-28 04:16:13,167 INFO L175 Difference]: Start difference. First operand has 151 places, 239 transitions, 2769 flow. Second operand 6 states and 150 transitions. [2024-06-28 04:16:13,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 275 transitions, 3511 flow [2024-06-28 04:16:13,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 275 transitions, 3372 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-28 04:16:13,512 INFO L231 Difference]: Finished difference. Result has 153 places, 239 transitions, 2711 flow [2024-06-28 04:16:13,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2630, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2711, PETRI_PLACES=153, PETRI_TRANSITIONS=239} [2024-06-28 04:16:13,512 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 98 predicate places. [2024-06-28 04:16:13,512 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 239 transitions, 2711 flow [2024-06-28 04:16:13,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:13,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:13,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:13,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 04:16:13,513 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:13,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:13,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1401791527, now seen corresponding path program 1 times [2024-06-28 04:16:13,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:13,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930167989] [2024-06-28 04:16:13,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:13,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:16,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:16,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930167989] [2024-06-28 04:16:16,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930167989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:16,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:16,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:16,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368322761] [2024-06-28 04:16:16,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:16,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:16,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:16,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:16,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:16,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:16:16,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 239 transitions, 2711 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:16,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:16,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:16:16,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:19,342 INFO L124 PetriNetUnfolderBase]: 9022/12799 cut-off events. [2024-06-28 04:16:19,342 INFO L125 PetriNetUnfolderBase]: For 263328/263333 co-relation queries the response was YES. [2024-06-28 04:16:19,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78429 conditions, 12799 events. 9022/12799 cut-off events. For 263328/263333 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 70616 event pairs, 3222 based on Foata normal form. 18/12810 useless extension candidates. Maximal degree in co-relation 78359. Up to 12296 conditions per place. [2024-06-28 04:16:19,467 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 251 selfloop transitions, 20 changer transitions 0/277 dead transitions. [2024-06-28 04:16:19,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 277 transitions, 3485 flow [2024-06-28 04:16:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:16:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:16:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 04:16:19,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46474358974358976 [2024-06-28 04:16:19,469 INFO L175 Difference]: Start difference. First operand has 153 places, 239 transitions, 2711 flow. Second operand 6 states and 145 transitions. [2024-06-28 04:16:19,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 277 transitions, 3485 flow [2024-06-28 04:16:19,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 277 transitions, 3415 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:19,826 INFO L231 Difference]: Finished difference. Result has 154 places, 242 transitions, 2760 flow [2024-06-28 04:16:19,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2641, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2760, PETRI_PLACES=154, PETRI_TRANSITIONS=242} [2024-06-28 04:16:19,827 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 99 predicate places. [2024-06-28 04:16:19,827 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 242 transitions, 2760 flow [2024-06-28 04:16:19,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:19,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:19,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:19,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 04:16:19,828 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:19,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:19,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1717553435, now seen corresponding path program 1 times [2024-06-28 04:16:19,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:19,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56187814] [2024-06-28 04:16:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:19,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:23,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:23,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56187814] [2024-06-28 04:16:23,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56187814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:23,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:23,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:23,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085345681] [2024-06-28 04:16:23,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:23,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:23,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:23,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:23,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:23,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:16:23,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 242 transitions, 2760 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:23,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:23,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:16:23,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:26,236 INFO L124 PetriNetUnfolderBase]: 9870/13934 cut-off events. [2024-06-28 04:16:26,236 INFO L125 PetriNetUnfolderBase]: For 311263/311289 co-relation queries the response was YES. [2024-06-28 04:16:26,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87345 conditions, 13934 events. 9870/13934 cut-off events. For 311263/311289 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 77216 event pairs, 3090 based on Foata normal form. 38/13960 useless extension candidates. Maximal degree in co-relation 87274. Up to 11984 conditions per place. [2024-06-28 04:16:26,413 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 225 selfloop transitions, 117 changer transitions 0/348 dead transitions. [2024-06-28 04:16:26,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 348 transitions, 4491 flow [2024-06-28 04:16:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:16:26,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:16:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-06-28 04:16:26,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4825174825174825 [2024-06-28 04:16:26,415 INFO L175 Difference]: Start difference. First operand has 154 places, 242 transitions, 2760 flow. Second operand 11 states and 276 transitions. [2024-06-28 04:16:26,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 348 transitions, 4491 flow [2024-06-28 04:16:26,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 348 transitions, 4406 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 04:16:26,884 INFO L231 Difference]: Finished difference. Result has 164 places, 265 transitions, 3275 flow [2024-06-28 04:16:26,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2675, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3275, PETRI_PLACES=164, PETRI_TRANSITIONS=265} [2024-06-28 04:16:26,887 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 109 predicate places. [2024-06-28 04:16:26,887 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 265 transitions, 3275 flow [2024-06-28 04:16:26,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:26,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:26,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:26,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 04:16:26,887 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:26,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:26,888 INFO L85 PathProgramCache]: Analyzing trace with hash -992529243, now seen corresponding path program 1 times [2024-06-28 04:16:26,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:26,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853401510] [2024-06-28 04:16:26,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:26,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:29,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:29,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853401510] [2024-06-28 04:16:29,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853401510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:29,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:29,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:16:29,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795556190] [2024-06-28 04:16:29,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:29,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:16:29,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:29,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:16:29,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:16:29,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:16:29,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 265 transitions, 3275 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:29,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:29,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:16:29,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:33,017 INFO L124 PetriNetUnfolderBase]: 9934/14023 cut-off events. [2024-06-28 04:16:33,017 INFO L125 PetriNetUnfolderBase]: For 352241/352255 co-relation queries the response was YES. [2024-06-28 04:16:33,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94146 conditions, 14023 events. 9934/14023 cut-off events. For 352241/352255 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 77675 event pairs, 3201 based on Foata normal form. 12/14025 useless extension candidates. Maximal degree in co-relation 94071. Up to 13095 conditions per place. [2024-06-28 04:16:33,165 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 225 selfloop transitions, 91 changer transitions 0/322 dead transitions. [2024-06-28 04:16:33,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 322 transitions, 4467 flow [2024-06-28 04:16:33,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:16:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:16:33,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 04:16:33,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47802197802197804 [2024-06-28 04:16:33,167 INFO L175 Difference]: Start difference. First operand has 164 places, 265 transitions, 3275 flow. Second operand 7 states and 174 transitions. [2024-06-28 04:16:33,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 322 transitions, 4467 flow [2024-06-28 04:16:33,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 322 transitions, 4201 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:33,694 INFO L231 Difference]: Finished difference. Result has 167 places, 277 transitions, 3466 flow [2024-06-28 04:16:33,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3023, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3466, PETRI_PLACES=167, PETRI_TRANSITIONS=277} [2024-06-28 04:16:33,695 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 112 predicate places. [2024-06-28 04:16:33,695 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 277 transitions, 3466 flow [2024-06-28 04:16:33,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:33,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:33,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:33,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 04:16:33,696 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:33,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash -987767643, now seen corresponding path program 2 times [2024-06-28 04:16:33,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:33,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918954335] [2024-06-28 04:16:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:36,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:36,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918954335] [2024-06-28 04:16:36,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918954335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:36,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:36,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:16:36,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439627903] [2024-06-28 04:16:36,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:36,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:16:36,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:16:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:16:36,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:16:36,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 277 transitions, 3466 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:36,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:36,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:16:36,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:39,798 INFO L124 PetriNetUnfolderBase]: 9915/14021 cut-off events. [2024-06-28 04:16:39,799 INFO L125 PetriNetUnfolderBase]: For 362790/362803 co-relation queries the response was YES. [2024-06-28 04:16:39,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93924 conditions, 14021 events. 9915/14021 cut-off events. For 362790/362803 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 77875 event pairs, 3174 based on Foata normal form. 16/14032 useless extension candidates. Maximal degree in co-relation 93846. Up to 13523 conditions per place. [2024-06-28 04:16:39,972 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 281 selfloop transitions, 33 changer transitions 0/320 dead transitions. [2024-06-28 04:16:39,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 320 transitions, 4223 flow [2024-06-28 04:16:39,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:16:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:16:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 04:16:39,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43509615384615385 [2024-06-28 04:16:39,974 INFO L175 Difference]: Start difference. First operand has 167 places, 277 transitions, 3466 flow. Second operand 8 states and 181 transitions. [2024-06-28 04:16:39,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 320 transitions, 4223 flow [2024-06-28 04:16:40,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 320 transitions, 4052 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 04:16:40,496 INFO L231 Difference]: Finished difference. Result has 172 places, 277 transitions, 3372 flow [2024-06-28 04:16:40,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3295, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3372, PETRI_PLACES=172, PETRI_TRANSITIONS=277} [2024-06-28 04:16:40,497 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 117 predicate places. [2024-06-28 04:16:40,497 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 277 transitions, 3372 flow [2024-06-28 04:16:40,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:40,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:40,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:40,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 04:16:40,498 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:40,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:40,498 INFO L85 PathProgramCache]: Analyzing trace with hash -120633393, now seen corresponding path program 2 times [2024-06-28 04:16:40,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:40,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940769438] [2024-06-28 04:16:40,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:40,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:43,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:43,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940769438] [2024-06-28 04:16:43,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940769438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:43,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:43,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:43,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515877268] [2024-06-28 04:16:43,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:43,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:43,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:43,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:43,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:43,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:16:43,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 277 transitions, 3372 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:43,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:43,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:16:43,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:47,681 INFO L124 PetriNetUnfolderBase]: 10543/14861 cut-off events. [2024-06-28 04:16:47,681 INFO L125 PetriNetUnfolderBase]: For 408478/408491 co-relation queries the response was YES. [2024-06-28 04:16:47,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99954 conditions, 14861 events. 10543/14861 cut-off events. For 408478/408491 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 82528 event pairs, 3174 based on Foata normal form. 28/14884 useless extension candidates. Maximal degree in co-relation 99875. Up to 13640 conditions per place. [2024-06-28 04:16:47,820 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 301 selfloop transitions, 64 changer transitions 0/371 dead transitions. [2024-06-28 04:16:47,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 371 transitions, 4931 flow [2024-06-28 04:16:47,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:16:47,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:16:47,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 265 transitions. [2024-06-28 04:16:47,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632867132867133 [2024-06-28 04:16:47,822 INFO L175 Difference]: Start difference. First operand has 172 places, 277 transitions, 3372 flow. Second operand 11 states and 265 transitions. [2024-06-28 04:16:47,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 371 transitions, 4931 flow [2024-06-28 04:16:48,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 371 transitions, 4865 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 04:16:48,404 INFO L231 Difference]: Finished difference. Result has 178 places, 294 transitions, 3704 flow [2024-06-28 04:16:48,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3306, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3704, PETRI_PLACES=178, PETRI_TRANSITIONS=294} [2024-06-28 04:16:48,404 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 123 predicate places. [2024-06-28 04:16:48,405 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 294 transitions, 3704 flow [2024-06-28 04:16:48,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:48,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:48,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:48,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 04:16:48,405 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:48,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:48,406 INFO L85 PathProgramCache]: Analyzing trace with hash -987761071, now seen corresponding path program 3 times [2024-06-28 04:16:48,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:48,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652780824] [2024-06-28 04:16:48,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:48,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:52,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:52,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652780824] [2024-06-28 04:16:52,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652780824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:52,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:52,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:52,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932540732] [2024-06-28 04:16:52,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:52,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:52,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:52,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:52,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:52,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:16:52,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 294 transitions, 3704 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:52,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:52,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:16:52,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:56,537 INFO L124 PetriNetUnfolderBase]: 10693/15083 cut-off events. [2024-06-28 04:16:56,537 INFO L125 PetriNetUnfolderBase]: For 441852/441865 co-relation queries the response was YES. [2024-06-28 04:16:56,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104388 conditions, 15083 events. 10693/15083 cut-off events. For 441852/441865 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 84208 event pairs, 3154 based on Foata normal form. 28/15106 useless extension candidates. Maximal degree in co-relation 104306. Up to 13754 conditions per place. [2024-06-28 04:16:56,728 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 302 selfloop transitions, 75 changer transitions 0/383 dead transitions. [2024-06-28 04:16:56,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 383 transitions, 5179 flow [2024-06-28 04:16:56,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:16:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:16:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 282 transitions. [2024-06-28 04:16:56,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2024-06-28 04:16:56,730 INFO L175 Difference]: Start difference. First operand has 178 places, 294 transitions, 3704 flow. Second operand 12 states and 282 transitions. [2024-06-28 04:16:56,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 383 transitions, 5179 flow [2024-06-28 04:16:57,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 383 transitions, 5047 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 04:16:57,442 INFO L231 Difference]: Finished difference. Result has 186 places, 307 transitions, 4016 flow [2024-06-28 04:16:57,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3578, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4016, PETRI_PLACES=186, PETRI_TRANSITIONS=307} [2024-06-28 04:16:57,443 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 131 predicate places. [2024-06-28 04:16:57,443 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 307 transitions, 4016 flow [2024-06-28 04:16:57,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:57,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:57,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:57,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 04:16:57,444 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:16:57,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:57,444 INFO L85 PathProgramCache]: Analyzing trace with hash 203580581, now seen corresponding path program 3 times [2024-06-28 04:16:57,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:57,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564550978] [2024-06-28 04:16:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:57,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:00,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:00,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564550978] [2024-06-28 04:17:00,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564550978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:00,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:00,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:17:00,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314411979] [2024-06-28 04:17:00,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:00,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:17:00,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:00,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:17:00,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:17:00,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:17:00,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 307 transitions, 4016 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:00,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:00,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:17:00,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:04,389 INFO L124 PetriNetUnfolderBase]: 10712/15088 cut-off events. [2024-06-28 04:17:04,389 INFO L125 PetriNetUnfolderBase]: For 470310/470374 co-relation queries the response was YES. [2024-06-28 04:17:04,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107134 conditions, 15088 events. 10712/15088 cut-off events. For 470310/470374 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 83905 event pairs, 3364 based on Foata normal form. 24/15084 useless extension candidates. Maximal degree in co-relation 107048. Up to 14096 conditions per place. [2024-06-28 04:17:04,536 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 252 selfloop transitions, 98 changer transitions 0/356 dead transitions. [2024-06-28 04:17:04,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 356 transitions, 5272 flow [2024-06-28 04:17:04,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:17:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:17:04,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 04:17:04,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725274725274725 [2024-06-28 04:17:04,539 INFO L175 Difference]: Start difference. First operand has 186 places, 307 transitions, 4016 flow. Second operand 7 states and 172 transitions. [2024-06-28 04:17:04,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 356 transitions, 5272 flow [2024-06-28 04:17:05,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 356 transitions, 5118 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-28 04:17:05,207 INFO L231 Difference]: Finished difference. Result has 187 places, 311 transitions, 4144 flow [2024-06-28 04:17:05,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3862, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4144, PETRI_PLACES=187, PETRI_TRANSITIONS=311} [2024-06-28 04:17:05,208 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 132 predicate places. [2024-06-28 04:17:05,208 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 311 transitions, 4144 flow [2024-06-28 04:17:05,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:05,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:05,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:05,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 04:17:05,208 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:17:05,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:05,209 INFO L85 PathProgramCache]: Analyzing trace with hash 214056101, now seen corresponding path program 4 times [2024-06-28 04:17:05,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:05,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039715509] [2024-06-28 04:17:05,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:05,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:07,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:07,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039715509] [2024-06-28 04:17:07,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039715509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:07,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:07,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:17:07,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557050691] [2024-06-28 04:17:07,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:07,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:17:07,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:07,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:17:07,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:17:07,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:17:07,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 311 transitions, 4144 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:07,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:07,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:17:07,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:11,444 INFO L124 PetriNetUnfolderBase]: 10705/15065 cut-off events. [2024-06-28 04:17:11,444 INFO L125 PetriNetUnfolderBase]: For 488675/488727 co-relation queries the response was YES. [2024-06-28 04:17:11,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107447 conditions, 15065 events. 10705/15065 cut-off events. For 488675/488727 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 83752 event pairs, 3368 based on Foata normal form. 20/15057 useless extension candidates. Maximal degree in co-relation 107359. Up to 14091 conditions per place. [2024-06-28 04:17:11,589 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 244 selfloop transitions, 99 changer transitions 0/349 dead transitions. [2024-06-28 04:17:11,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 349 transitions, 5180 flow [2024-06-28 04:17:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:17:11,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:17:11,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 04:17:11,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45879120879120877 [2024-06-28 04:17:11,600 INFO L175 Difference]: Start difference. First operand has 187 places, 311 transitions, 4144 flow. Second operand 7 states and 167 transitions. [2024-06-28 04:17:11,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 349 transitions, 5180 flow [2024-06-28 04:17:12,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 349 transitions, 4802 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 04:17:12,200 INFO L231 Difference]: Finished difference. Result has 187 places, 311 transitions, 3973 flow [2024-06-28 04:17:12,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3766, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3973, PETRI_PLACES=187, PETRI_TRANSITIONS=311} [2024-06-28 04:17:12,201 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 132 predicate places. [2024-06-28 04:17:12,201 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 311 transitions, 3973 flow [2024-06-28 04:17:12,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:12,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:12,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:12,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 04:17:12,202 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:17:12,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:12,202 INFO L85 PathProgramCache]: Analyzing trace with hash -512549625, now seen corresponding path program 5 times [2024-06-28 04:17:12,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:12,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160411438] [2024-06-28 04:17:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:12,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:15,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:15,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160411438] [2024-06-28 04:17:15,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160411438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:15,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:15,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:17:15,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175903764] [2024-06-28 04:17:15,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:15,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:17:15,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:15,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:17:15,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:17:15,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:17:15,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 311 transitions, 3973 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:15,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:15,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:17:15,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:18,566 INFO L124 PetriNetUnfolderBase]: 10698/15101 cut-off events. [2024-06-28 04:17:18,567 INFO L125 PetriNetUnfolderBase]: For 505069/505149 co-relation queries the response was YES. [2024-06-28 04:17:18,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107678 conditions, 15101 events. 10698/15101 cut-off events. For 505069/505149 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 84371 event pairs, 3294 based on Foata normal form. 51/15139 useless extension candidates. Maximal degree in co-relation 107590. Up to 14231 conditions per place. [2024-06-28 04:17:18,746 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 280 selfloop transitions, 76 changer transitions 0/362 dead transitions. [2024-06-28 04:17:18,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 362 transitions, 4968 flow [2024-06-28 04:17:18,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:17:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:17:18,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 04:17:18,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2024-06-28 04:17:18,748 INFO L175 Difference]: Start difference. First operand has 187 places, 311 transitions, 3973 flow. Second operand 7 states and 176 transitions. [2024-06-28 04:17:18,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 362 transitions, 4968 flow [2024-06-28 04:17:19,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 362 transitions, 4697 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 04:17:19,484 INFO L231 Difference]: Finished difference. Result has 189 places, 311 transitions, 3871 flow [2024-06-28 04:17:19,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3702, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3871, PETRI_PLACES=189, PETRI_TRANSITIONS=311} [2024-06-28 04:17:19,484 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 134 predicate places. [2024-06-28 04:17:19,484 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 311 transitions, 3871 flow [2024-06-28 04:17:19,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:19,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:19,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:19,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 04:17:19,485 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:17:19,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:19,485 INFO L85 PathProgramCache]: Analyzing trace with hash -518263545, now seen corresponding path program 6 times [2024-06-28 04:17:19,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:19,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816276261] [2024-06-28 04:17:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:19,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:22,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:22,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816276261] [2024-06-28 04:17:22,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816276261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:22,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:22,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:17:22,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006566904] [2024-06-28 04:17:22,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:22,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:17:22,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:22,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:17:22,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:17:22,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:17:22,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 311 transitions, 3871 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:22,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:22,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:17:22,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:26,027 INFO L124 PetriNetUnfolderBase]: 10679/15079 cut-off events. [2024-06-28 04:17:26,028 INFO L125 PetriNetUnfolderBase]: For 525473/525486 co-relation queries the response was YES. [2024-06-28 04:17:26,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107929 conditions, 15079 events. 10679/15079 cut-off events. For 525473/525486 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 84353 event pairs, 3277 based on Foata normal form. 16/15090 useless extension candidates. Maximal degree in co-relation 107840. Up to 14212 conditions per place. [2024-06-28 04:17:26,494 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 289 selfloop transitions, 76 changer transitions 0/371 dead transitions. [2024-06-28 04:17:26,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 371 transitions, 4784 flow [2024-06-28 04:17:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:17:26,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:17:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 04:17:26,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831730769230769 [2024-06-28 04:17:26,496 INFO L175 Difference]: Start difference. First operand has 189 places, 311 transitions, 3871 flow. Second operand 8 states and 201 transitions. [2024-06-28 04:17:26,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 371 transitions, 4784 flow [2024-06-28 04:17:27,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 371 transitions, 4620 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 04:17:27,299 INFO L231 Difference]: Finished difference. Result has 191 places, 311 transitions, 3888 flow [2024-06-28 04:17:27,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3707, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3888, PETRI_PLACES=191, PETRI_TRANSITIONS=311} [2024-06-28 04:17:27,299 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 136 predicate places. [2024-06-28 04:17:27,299 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 311 transitions, 3888 flow [2024-06-28 04:17:27,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:27,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:27,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:27,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 04:17:27,300 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:17:27,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash -518256973, now seen corresponding path program 4 times [2024-06-28 04:17:27,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:27,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005104330] [2024-06-28 04:17:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:27,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:30,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:30,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:30,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005104330] [2024-06-28 04:17:30,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005104330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:30,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:30,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:17:30,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844383190] [2024-06-28 04:17:30,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:30,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:17:30,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:30,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:17:30,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:17:30,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:17:30,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 311 transitions, 3888 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:30,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:30,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:17:30,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:34,776 INFO L124 PetriNetUnfolderBase]: 11773/16583 cut-off events. [2024-06-28 04:17:34,777 INFO L125 PetriNetUnfolderBase]: For 574377/574390 co-relation queries the response was YES. [2024-06-28 04:17:34,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119221 conditions, 16583 events. 11773/16583 cut-off events. For 574377/574390 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 93713 event pairs, 3234 based on Foata normal form. 28/16606 useless extension candidates. Maximal degree in co-relation 119132. Up to 14141 conditions per place. [2024-06-28 04:17:35,020 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 296 selfloop transitions, 139 changer transitions 0/441 dead transitions. [2024-06-28 04:17:35,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 441 transitions, 6021 flow [2024-06-28 04:17:35,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:17:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:17:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-28 04:17:35,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 04:17:35,024 INFO L175 Difference]: Start difference. First operand has 191 places, 311 transitions, 3888 flow. Second operand 10 states and 247 transitions. [2024-06-28 04:17:35,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 441 transitions, 6021 flow [2024-06-28 04:17:36,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 441 transitions, 5783 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 04:17:36,073 INFO L231 Difference]: Finished difference. Result has 193 places, 364 transitions, 4854 flow [2024-06-28 04:17:36,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3662, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4854, PETRI_PLACES=193, PETRI_TRANSITIONS=364} [2024-06-28 04:17:36,073 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 138 predicate places. [2024-06-28 04:17:36,074 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 364 transitions, 4854 flow [2024-06-28 04:17:36,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:36,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:36,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:36,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 04:17:36,074 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:17:36,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:36,075 INFO L85 PathProgramCache]: Analyzing trace with hash 257490437, now seen corresponding path program 5 times [2024-06-28 04:17:36,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:36,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243660895] [2024-06-28 04:17:36,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:39,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:39,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243660895] [2024-06-28 04:17:39,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243660895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:39,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:39,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:17:39,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360718274] [2024-06-28 04:17:39,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:39,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:17:39,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:39,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:17:39,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:17:39,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:17:39,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 364 transitions, 4854 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:39,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:39,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:17:39,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:44,616 INFO L124 PetriNetUnfolderBase]: 11737/16559 cut-off events. [2024-06-28 04:17:44,617 INFO L125 PetriNetUnfolderBase]: For 559476/559489 co-relation queries the response was YES. [2024-06-28 04:17:44,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121748 conditions, 16559 events. 11737/16559 cut-off events. For 559476/559489 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 93724 event pairs, 3338 based on Foata normal form. 28/16582 useless extension candidates. Maximal degree in co-relation 121658. Up to 14125 conditions per place. [2024-06-28 04:17:44,908 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 305 selfloop transitions, 147 changer transitions 0/458 dead transitions. [2024-06-28 04:17:44,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 458 transitions, 6420 flow [2024-06-28 04:17:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:17:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:17:44,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-06-28 04:17:44,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48426573426573427 [2024-06-28 04:17:44,935 INFO L175 Difference]: Start difference. First operand has 193 places, 364 transitions, 4854 flow. Second operand 11 states and 277 transitions. [2024-06-28 04:17:44,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 458 transitions, 6420 flow [2024-06-28 04:17:45,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 458 transitions, 6209 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-28 04:17:45,955 INFO L231 Difference]: Finished difference. Result has 201 places, 372 transitions, 5261 flow [2024-06-28 04:17:45,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=4659, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5261, PETRI_PLACES=201, PETRI_TRANSITIONS=372} [2024-06-28 04:17:45,956 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 146 predicate places. [2024-06-28 04:17:45,956 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 372 transitions, 5261 flow [2024-06-28 04:17:45,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:45,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:45,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:45,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 04:17:45,957 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:17:45,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:45,957 INFO L85 PathProgramCache]: Analyzing trace with hash -506292523, now seen corresponding path program 6 times [2024-06-28 04:17:45,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:45,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780809562] [2024-06-28 04:17:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:45,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:49,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:49,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780809562] [2024-06-28 04:17:49,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780809562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:49,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:49,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:17:49,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893105224] [2024-06-28 04:17:49,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:49,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:17:49,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:49,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:17:49,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:17:49,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:17:49,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 372 transitions, 5261 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:49,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:49,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:17:49,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:54,165 INFO L124 PetriNetUnfolderBase]: 12373/17492 cut-off events. [2024-06-28 04:17:54,166 INFO L125 PetriNetUnfolderBase]: For 605157/605239 co-relation queries the response was YES. [2024-06-28 04:17:54,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131177 conditions, 17492 events. 12373/17492 cut-off events. For 605157/605239 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 99825 event pairs, 3084 based on Foata normal form. 65/17544 useless extension candidates. Maximal degree in co-relation 131083. Up to 13588 conditions per place. [2024-06-28 04:17:54,371 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 262 selfloop transitions, 205 changer transitions 0/473 dead transitions. [2024-06-28 04:17:54,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 473 transitions, 7278 flow [2024-06-28 04:17:54,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:17:54,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:17:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-06-28 04:17:54,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49423076923076925 [2024-06-28 04:17:54,373 INFO L175 Difference]: Start difference. First operand has 201 places, 372 transitions, 5261 flow. Second operand 10 states and 257 transitions. [2024-06-28 04:17:54,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 473 transitions, 7278 flow [2024-06-28 04:17:55,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 473 transitions, 7025 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 04:17:55,594 INFO L231 Difference]: Finished difference. Result has 206 places, 394 transitions, 5897 flow [2024-06-28 04:17:55,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5008, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5897, PETRI_PLACES=206, PETRI_TRANSITIONS=394} [2024-06-28 04:17:55,594 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 151 predicate places. [2024-06-28 04:17:55,595 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 394 transitions, 5897 flow [2024-06-28 04:17:55,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:55,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:55,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:55,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 04:17:55,595 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:17:55,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:55,596 INFO L85 PathProgramCache]: Analyzing trace with hash -678605061, now seen corresponding path program 1 times [2024-06-28 04:17:55,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:55,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115796062] [2024-06-28 04:17:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:55,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:58,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:58,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115796062] [2024-06-28 04:17:58,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115796062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:58,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:58,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:17:58,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805933789] [2024-06-28 04:17:58,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:58,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:17:58,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:58,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:17:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:17:58,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:17:58,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 394 transitions, 5897 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:58,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:58,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:17:58,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:02,367 INFO L124 PetriNetUnfolderBase]: 12405/17486 cut-off events. [2024-06-28 04:18:02,368 INFO L125 PetriNetUnfolderBase]: For 680943/680948 co-relation queries the response was YES. [2024-06-28 04:18:02,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138434 conditions, 17486 events. 12405/17486 cut-off events. For 680943/680948 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 100058 event pairs, 3736 based on Foata normal form. 6/17485 useless extension candidates. Maximal degree in co-relation 138337. Up to 16708 conditions per place. [2024-06-28 04:18:02,569 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 405 selfloop transitions, 29 changer transitions 0/440 dead transitions. [2024-06-28 04:18:02,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 440 transitions, 7185 flow [2024-06-28 04:18:02,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:18:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:18:02,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 04:18:02,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478021978021978 [2024-06-28 04:18:02,571 INFO L175 Difference]: Start difference. First operand has 206 places, 394 transitions, 5897 flow. Second operand 7 states and 163 transitions. [2024-06-28 04:18:02,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 440 transitions, 7185 flow [2024-06-28 04:18:04,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 440 transitions, 6876 flow, removed 103 selfloop flow, removed 5 redundant places. [2024-06-28 04:18:04,170 INFO L231 Difference]: Finished difference. Result has 208 places, 400 transitions, 5836 flow [2024-06-28 04:18:04,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5604, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5836, PETRI_PLACES=208, PETRI_TRANSITIONS=400} [2024-06-28 04:18:04,171 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 153 predicate places. [2024-06-28 04:18:04,171 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 400 transitions, 5836 flow [2024-06-28 04:18:04,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:04,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:04,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:04,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 04:18:04,172 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:18:04,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:04,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1482095429, now seen corresponding path program 2 times [2024-06-28 04:18:04,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:04,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122288000] [2024-06-28 04:18:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:04,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:06,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:06,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122288000] [2024-06-28 04:18:06,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122288000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:06,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:06,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:18:06,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950650843] [2024-06-28 04:18:06,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:06,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:18:06,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:06,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:18:06,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:18:06,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:18:06,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 400 transitions, 5836 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:06,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:06,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:18:06,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:10,902 INFO L124 PetriNetUnfolderBase]: 12437/17530 cut-off events. [2024-06-28 04:18:10,903 INFO L125 PetriNetUnfolderBase]: For 692270/692275 co-relation queries the response was YES. [2024-06-28 04:18:11,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137161 conditions, 17530 events. 12437/17530 cut-off events. For 692270/692275 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 100258 event pairs, 3880 based on Foata normal form. 6/17529 useless extension candidates. Maximal degree in co-relation 137063. Up to 16830 conditions per place. [2024-06-28 04:18:11,317 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 406 selfloop transitions, 24 changer transitions 0/436 dead transitions. [2024-06-28 04:18:11,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 436 transitions, 6876 flow [2024-06-28 04:18:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:18:11,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:18:11,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 04:18:11,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:18:11,324 INFO L175 Difference]: Start difference. First operand has 208 places, 400 transitions, 5836 flow. Second operand 7 states and 156 transitions. [2024-06-28 04:18:11,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 436 transitions, 6876 flow [2024-06-28 04:18:12,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 436 transitions, 6711 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-06-28 04:18:12,475 INFO L231 Difference]: Finished difference. Result has 212 places, 403 transitions, 5819 flow [2024-06-28 04:18:12,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5705, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5819, PETRI_PLACES=212, PETRI_TRANSITIONS=403} [2024-06-28 04:18:12,476 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 157 predicate places. [2024-06-28 04:18:12,476 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 403 transitions, 5819 flow [2024-06-28 04:18:12,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:12,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:12,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:12,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 04:18:12,477 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:18:12,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:12,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1841980101, now seen corresponding path program 3 times [2024-06-28 04:18:12,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:12,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867727875] [2024-06-28 04:18:12,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:12,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:14,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:14,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867727875] [2024-06-28 04:18:14,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867727875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:14,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:14,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:18:14,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114534100] [2024-06-28 04:18:14,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:14,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:18:14,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:14,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:18:14,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:18:14,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:18:14,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 403 transitions, 5819 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:14,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:14,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:18:14,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:19,546 INFO L124 PetriNetUnfolderBase]: 12425/17514 cut-off events. [2024-06-28 04:18:19,547 INFO L125 PetriNetUnfolderBase]: For 717041/717046 co-relation queries the response was YES. [2024-06-28 04:18:19,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137339 conditions, 17514 events. 12425/17514 cut-off events. For 717041/717046 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 100008 event pairs, 3728 based on Foata normal form. 6/17513 useless extension candidates. Maximal degree in co-relation 137239. Up to 16787 conditions per place. [2024-06-28 04:18:19,864 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 406 selfloop transitions, 23 changer transitions 0/435 dead transitions. [2024-06-28 04:18:19,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 435 transitions, 6769 flow [2024-06-28 04:18:19,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:18:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:18:19,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 04:18:19,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-28 04:18:19,866 INFO L175 Difference]: Start difference. First operand has 212 places, 403 transitions, 5819 flow. Second operand 6 states and 142 transitions. [2024-06-28 04:18:19,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 435 transitions, 6769 flow [2024-06-28 04:18:21,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 435 transitions, 6649 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 04:18:21,330 INFO L231 Difference]: Finished difference. Result has 213 places, 403 transitions, 5757 flow [2024-06-28 04:18:21,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=5699, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5757, PETRI_PLACES=213, PETRI_TRANSITIONS=403} [2024-06-28 04:18:21,331 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 158 predicate places. [2024-06-28 04:18:21,331 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 403 transitions, 5757 flow [2024-06-28 04:18:21,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:18:21,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:21,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:21,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 04:18:21,332 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:18:21,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:21,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1578160181, now seen corresponding path program 1 times [2024-06-28 04:18:21,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:21,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086662860] [2024-06-28 04:18:21,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:21,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat