./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe012_power.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe012_power.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/safe012_power.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe012_power.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:45:49,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:45:49,574 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:45:49,580 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:45:49,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:45:49,606 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:45:49,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:45:49,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:45:49,607 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:45:49,611 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:45:49,612 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:45:49,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:45:49,613 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:45:49,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:45:49,614 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:45:49,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:45:49,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:45:49,615 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:45:49,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:45:49,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:45:49,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:45:49,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:45:49,617 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:45:49,617 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:45:49,618 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:45:49,618 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:45:49,618 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:45:49,618 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:45:49,619 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:45:49,619 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:45:49,620 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:45:49,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:45:49,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:45:49,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:45:49,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:45:49,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:45:49,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:45:49,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:45:49,621 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:45:49,621 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:45:49,622 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:45:49,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:45:49,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:45:49,622 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:45:49,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:45:49,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:45:49,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:45:49,857 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:45:49,858 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:45:49,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_power.oepc.i [2024-06-27 22:45:51,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:45:51,275 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:45:51,275 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_power.oepc.i [2024-06-27 22:45:51,291 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b9d4d48/9b16228826e74618a4ebb78623ce9487/FLAG59262aac6 [2024-06-27 22:45:51,302 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09b9d4d48/9b16228826e74618a4ebb78623ce9487 [2024-06-27 22:45:51,304 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:45:51,304 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:45:51,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe012_power.oepc.yml/witness.yml [2024-06-27 22:45:51,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:45:51,386 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:45:51,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:45:51,387 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:45:51,390 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:45:51,391 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:45:51" (1/2) ... [2024-06-27 22:45:51,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a26eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:51, skipping insertion in model container [2024-06-27 22:45:51,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:45:51" (1/2) ... [2024-06-27 22:45:51,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7687c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:51, skipping insertion in model container [2024-06-27 22:45:51,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:45:51" (2/2) ... [2024-06-27 22:45:51,394 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a26eaf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51, skipping insertion in model container [2024-06-27 22:45:51,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:45:51" (2/2) ... [2024-06-27 22:45:51,394 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:45:51,415 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:45:51,417 INFO L97 edCorrectnessWitness]: Location invariant before [L842-L842] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )y) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )z$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )z$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$read_delayed >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice1) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) [2024-06-27 22:45:51,417 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )y) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )z$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )z$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$read_delayed >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice1) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) [2024-06-27 22:45:51,417 INFO L97 edCorrectnessWitness]: Location invariant before [L843-L843] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )z$mem_tmp) + (long long )z$w_buff1_used >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )x) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )y) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )z$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )z$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )z$flush_delayed) - (long long )z$mem_tmp >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$read_delayed >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff0 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff1 >= 0LL) && (1LL - (long long )z$mem_tmp) - (long long )z$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice1) - (long long )z$mem_tmp >= 0LL) && (2LL - (long long )weak$$choice2) - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )z$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )z - (long long )z$mem_tmp >= 0LL) [2024-06-27 22:45:51,418 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:45:51,418 INFO L106 edCorrectnessWitness]: ghost_update [L838-L838] multithreaded = 1; [2024-06-27 22:45:51,460 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:45:51,584 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_power.oepc.i[995,1008] [2024-06-27 22:45:51,758 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:45:51,767 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:45:51,801 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_power.oepc.i[995,1008] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:45:51,939 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:45:51,968 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:45:51,969 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51 WrapperNode [2024-06-27 22:45:51,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:45:51,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:45:51,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:45:51,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:45:51,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51" (1/1) ... [2024-06-27 22:45:52,006 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51" (1/1) ... [2024-06-27 22:45:52,058 INFO L138 Inliner]: procedures = 175, calls = 60, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 144 [2024-06-27 22:45:52,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:45:52,060 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:45:52,060 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:45:52,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:45:52,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51" (1/1) ... [2024-06-27 22:45:52,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51" (1/1) ... [2024-06-27 22:45:52,118 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51" (1/1) ... [2024-06-27 22:45:52,184 INFO L175 MemorySlicer]: Split 20 memory accesses to 2 slices as follows [2, 18]. 90 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-27 22:45:52,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51" (1/1) ... [2024-06-27 22:45:52,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51" (1/1) ... [2024-06-27 22:45:52,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51" (1/1) ... [2024-06-27 22:45:52,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51" (1/1) ... [2024-06-27 22:45:52,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51" (1/1) ... [2024-06-27 22:45:52,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51" (1/1) ... [2024-06-27 22:45:52,216 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:45:52,217 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:45:52,217 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:45:52,217 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:45:52,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51" (1/1) ... [2024-06-27 22:45:52,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:45:52,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:45:52,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:45:52,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:45:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:45:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:45:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:45:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:45:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:45:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:45:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:45:52,306 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:45:52,306 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:45:52,306 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:45:52,306 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:45:52,306 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:45:52,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:45:52,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:45:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:45:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:45:52,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:45:52,308 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:45:52,416 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:45:52,417 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:45:52,929 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:45:52,929 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:45:53,213 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:45:53,213 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:45:53,213 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:45:53 BoogieIcfgContainer [2024-06-27 22:45:53,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:45:53,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:45:53,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:45:53,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:45:53,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:45:51" (1/4) ... [2024-06-27 22:45:53,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57eb630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:45:53, skipping insertion in model container [2024-06-27 22:45:53,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:45:51" (2/4) ... [2024-06-27 22:45:53,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57eb630 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:45:53, skipping insertion in model container [2024-06-27 22:45:53,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:51" (3/4) ... [2024-06-27 22:45:53,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57eb630 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:45:53, skipping insertion in model container [2024-06-27 22:45:53,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:45:53" (4/4) ... [2024-06-27 22:45:53,223 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_power.oepc.i [2024-06-27 22:45:53,237 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:45:53,238 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:45:53,238 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:45:53,293 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:45:53,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:45:53,359 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 22:45:53,359 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:45:53,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 22:45:53,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:45:53,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 41 transitions, 91 flow [2024-06-27 22:45:53,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:45:53,384 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;@59256d26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:45:53,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:45:53,389 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:45:53,389 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:45:53,389 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:45:53,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:53,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:45:53,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:53,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:53,394 INFO L85 PathProgramCache]: Analyzing trace with hash 595359807, now seen corresponding path program 1 times [2024-06-27 22:45:53,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:53,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404621212] [2024-06-27 22:45:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:53,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:55,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:55,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:55,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404621212] [2024-06-27 22:45:55,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404621212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:55,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:55,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:45:55,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487747543] [2024-06-27 22:45:55,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:55,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:45:55,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:45:55,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:45:55,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:45:55,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:55,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:55,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:45:55,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:56,207 INFO L124 PetriNetUnfolderBase]: 2180/3473 cut-off events. [2024-06-27 22:45:56,208 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-27 22:45:56,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6726 conditions, 3473 events. 2180/3473 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 19876 event pairs, 1317 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 6714. Up to 3184 conditions per place. [2024-06-27 22:45:56,242 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 43 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 22:45:56,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 227 flow [2024-06-27 22:45:56,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:45:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:45:56,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-27 22:45:56,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-06-27 22:45:56,253 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 91 flow. Second operand 3 states and 93 transitions. [2024-06-27 22:45:56,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 227 flow [2024-06-27 22:45:56,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:45:56,257 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 125 flow [2024-06-27 22:45:56,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-27 22:45:56,261 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-27 22:45:56,261 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 125 flow [2024-06-27 22:45:56,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:56,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:56,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:56,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:45:56,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:56,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:56,262 INFO L85 PathProgramCache]: Analyzing trace with hash 910872718, now seen corresponding path program 1 times [2024-06-27 22:45:56,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:56,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595440856] [2024-06-27 22:45:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:56,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:58,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:58,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595440856] [2024-06-27 22:45:58,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595440856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:58,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:58,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:45:58,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327419721] [2024-06-27 22:45:58,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:58,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:45:58,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:58,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:45:58,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:45:58,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:45:58,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:58,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:58,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:45:58,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:59,855 INFO L124 PetriNetUnfolderBase]: 2174/3323 cut-off events. [2024-06-27 22:45:59,856 INFO L125 PetriNetUnfolderBase]: For 604/614 co-relation queries the response was YES. [2024-06-27 22:45:59,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7442 conditions, 3323 events. 2174/3323 cut-off events. For 604/614 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18195 event pairs, 893 based on Foata normal form. 6/3323 useless extension candidates. Maximal degree in co-relation 7430. Up to 3142 conditions per place. [2024-06-27 22:45:59,871 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 60 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2024-06-27 22:45:59,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 80 transitions, 355 flow [2024-06-27 22:45:59,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:45:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:45:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-27 22:45:59,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6702127659574468 [2024-06-27 22:45:59,873 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 125 flow. Second operand 4 states and 126 transitions. [2024-06-27 22:45:59,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 80 transitions, 355 flow [2024-06-27 22:45:59,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 80 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:45:59,875 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 188 flow [2024-06-27 22:45:59,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-27 22:45:59,876 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-06-27 22:45:59,876 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 188 flow [2024-06-27 22:45:59,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:59,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:59,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:59,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:45:59,877 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:59,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:59,878 INFO L85 PathProgramCache]: Analyzing trace with hash 207585016, now seen corresponding path program 1 times [2024-06-27 22:45:59,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:59,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467582060] [2024-06-27 22:45:59,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:59,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:03,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:03,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467582060] [2024-06-27 22:46:03,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467582060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:03,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:03,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:46:03,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709507504] [2024-06-27 22:46:03,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:03,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:46:03,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:03,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:46:03,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:46:03,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:46:03,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:03,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:03,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:46:03,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:04,843 INFO L124 PetriNetUnfolderBase]: 2769/4162 cut-off events. [2024-06-27 22:46:04,844 INFO L125 PetriNetUnfolderBase]: For 2308/2338 co-relation queries the response was YES. [2024-06-27 22:46:04,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 4162 events. 2769/4162 cut-off events. For 2308/2338 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 22447 event pairs, 709 based on Foata normal form. 15/4169 useless extension candidates. Maximal degree in co-relation 10420. Up to 3890 conditions per place. [2024-06-27 22:46:04,873 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 87 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-06-27 22:46:04,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 111 transitions, 546 flow [2024-06-27 22:46:04,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:04,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:04,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-27 22:46:04,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-27 22:46:04,875 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 188 flow. Second operand 6 states and 180 transitions. [2024-06-27 22:46:04,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 111 transitions, 546 flow [2024-06-27 22:46:04,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 111 transitions, 546 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 22:46:04,882 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 258 flow [2024-06-27 22:46:04,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=258, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-27 22:46:04,883 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2024-06-27 22:46:04,884 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 258 flow [2024-06-27 22:46:04,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:04,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:04,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:04,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:46:04,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:04,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:04,886 INFO L85 PathProgramCache]: Analyzing trace with hash -840928263, now seen corresponding path program 1 times [2024-06-27 22:46:04,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:04,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569834071] [2024-06-27 22:46:04,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:04,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:07,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:07,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569834071] [2024-06-27 22:46:07,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569834071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:07,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:07,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:46:07,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428866993] [2024-06-27 22:46:07,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:07,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:46:07,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:07,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:46:07,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:46:07,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:46:07,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:07,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:07,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:46:07,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:08,273 INFO L124 PetriNetUnfolderBase]: 2759/4117 cut-off events. [2024-06-27 22:46:08,274 INFO L125 PetriNetUnfolderBase]: For 4135/4181 co-relation queries the response was YES. [2024-06-27 22:46:08,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11317 conditions, 4117 events. 2759/4117 cut-off events. For 4135/4181 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 21910 event pairs, 830 based on Foata normal form. 16/4126 useless extension candidates. Maximal degree in co-relation 11297. Up to 3911 conditions per place. [2024-06-27 22:46:08,294 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 65 selfloop transitions, 14 changer transitions 0/87 dead transitions. [2024-06-27 22:46:08,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 87 transitions, 514 flow [2024-06-27 22:46:08,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:46:08,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:46:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-27 22:46:08,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-27 22:46:08,297 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 258 flow. Second operand 5 states and 130 transitions. [2024-06-27 22:46:08,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 87 transitions, 514 flow [2024-06-27 22:46:08,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 87 transitions, 483 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:08,301 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 301 flow [2024-06-27 22:46:08,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=301, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-27 22:46:08,302 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2024-06-27 22:46:08,302 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 301 flow [2024-06-27 22:46:08,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:08,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:08,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:08,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:46:08,303 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:08,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:08,303 INFO L85 PathProgramCache]: Analyzing trace with hash -298971080, now seen corresponding path program 1 times [2024-06-27 22:46:08,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:08,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747714807] [2024-06-27 22:46:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:08,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:10,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:10,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747714807] [2024-06-27 22:46:10,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747714807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:10,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:10,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:46:10,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527166127] [2024-06-27 22:46:10,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:10,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:46:10,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:10,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:46:10,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:46:10,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:46:10,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:10,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:10,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:46:10,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:12,425 INFO L124 PetriNetUnfolderBase]: 3289/4856 cut-off events. [2024-06-27 22:46:12,425 INFO L125 PetriNetUnfolderBase]: For 5847/5850 co-relation queries the response was YES. [2024-06-27 22:46:12,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14075 conditions, 4856 events. 3289/4856 cut-off events. For 5847/5850 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25862 event pairs, 945 based on Foata normal form. 6/4858 useless extension candidates. Maximal degree in co-relation 14051. Up to 4597 conditions per place. [2024-06-27 22:46:12,455 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 91 selfloop transitions, 15 changer transitions 0/113 dead transitions. [2024-06-27 22:46:12,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 113 transitions, 706 flow [2024-06-27 22:46:12,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:12,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:12,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 22:46:12,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-27 22:46:12,459 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 301 flow. Second operand 6 states and 152 transitions. [2024-06-27 22:46:12,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 113 transitions, 706 flow [2024-06-27 22:46:12,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 113 transitions, 688 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 22:46:12,470 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 417 flow [2024-06-27 22:46:12,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=417, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2024-06-27 22:46:12,473 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2024-06-27 22:46:12,473 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 417 flow [2024-06-27 22:46:12,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:12,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:12,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:12,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:46:12,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:12,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:12,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1870158255, now seen corresponding path program 1 times [2024-06-27 22:46:12,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:12,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2686051] [2024-06-27 22:46:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:12,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:15,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2686051] [2024-06-27 22:46:15,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2686051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:15,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:15,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:15,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337575101] [2024-06-27 22:46:15,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:15,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:15,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:15,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:15,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:15,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:46:15,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 417 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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) [2024-06-27 22:46:15,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:15,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:46:15,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:17,256 INFO L124 PetriNetUnfolderBase]: 3302/5008 cut-off events. [2024-06-27 22:46:17,257 INFO L125 PetriNetUnfolderBase]: For 9294/9475 co-relation queries the response was YES. [2024-06-27 22:46:17,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15671 conditions, 5008 events. 3302/5008 cut-off events. For 9294/9475 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 28168 event pairs, 783 based on Foata normal form. 58/5029 useless extension candidates. Maximal degree in co-relation 15641. Up to 4431 conditions per place. [2024-06-27 22:46:17,278 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 101 selfloop transitions, 33 changer transitions 0/145 dead transitions. [2024-06-27 22:46:17,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 145 transitions, 930 flow [2024-06-27 22:46:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:46:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:46:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 22:46:17,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 22:46:17,280 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 417 flow. Second operand 9 states and 223 transitions. [2024-06-27 22:46:17,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 145 transitions, 930 flow [2024-06-27 22:46:17,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 145 transitions, 925 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 22:46:17,289 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 605 flow [2024-06-27 22:46:17,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=605, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-06-27 22:46:17,289 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 31 predicate places. [2024-06-27 22:46:17,290 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 605 flow [2024-06-27 22:46:17,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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) [2024-06-27 22:46:17,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:17,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:17,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:46:17,290 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:17,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:17,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1912158915, now seen corresponding path program 2 times [2024-06-27 22:46:17,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:17,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915181439] [2024-06-27 22:46:17,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:17,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:19,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:19,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915181439] [2024-06-27 22:46:19,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915181439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:19,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:19,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:19,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086092201] [2024-06-27 22:46:19,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:19,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:19,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:19,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:20,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:46:20,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 605 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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) [2024-06-27 22:46:20,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:20,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:46:20,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:22,261 INFO L124 PetriNetUnfolderBase]: 3582/5355 cut-off events. [2024-06-27 22:46:22,262 INFO L125 PetriNetUnfolderBase]: For 14986/15057 co-relation queries the response was YES. [2024-06-27 22:46:22,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19298 conditions, 5355 events. 3582/5355 cut-off events. For 14986/15057 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 29800 event pairs, 788 based on Foata normal form. 14/5332 useless extension candidates. Maximal degree in co-relation 19262. Up to 4442 conditions per place. [2024-06-27 22:46:22,298 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 107 selfloop transitions, 51 changer transitions 0/169 dead transitions. [2024-06-27 22:46:22,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 169 transitions, 1248 flow [2024-06-27 22:46:22,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:46:22,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:46:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 22:46:22,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2024-06-27 22:46:22,300 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 605 flow. Second operand 9 states and 237 transitions. [2024-06-27 22:46:22,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 169 transitions, 1248 flow [2024-06-27 22:46:22,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 169 transitions, 1228 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 22:46:22,317 INFO L231 Difference]: Finished difference. Result has 92 places, 103 transitions, 837 flow [2024-06-27 22:46:22,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=837, PETRI_PLACES=92, PETRI_TRANSITIONS=103} [2024-06-27 22:46:22,317 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 41 predicate places. [2024-06-27 22:46:22,318 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 103 transitions, 837 flow [2024-06-27 22:46:22,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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) [2024-06-27 22:46:22,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:22,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:22,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:46:22,318 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:22,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:22,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1745453695, now seen corresponding path program 3 times [2024-06-27 22:46:22,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:22,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223471594] [2024-06-27 22:46:22,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:22,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:24,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:24,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223471594] [2024-06-27 22:46:24,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223471594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:24,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:24,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:24,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940436142] [2024-06-27 22:46:24,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:24,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:24,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:24,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:24,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:24,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:46:24,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 103 transitions, 837 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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) [2024-06-27 22:46:24,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:24,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:46:24,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:25,903 INFO L124 PetriNetUnfolderBase]: 3637/5424 cut-off events. [2024-06-27 22:46:25,903 INFO L125 PetriNetUnfolderBase]: For 23369/23489 co-relation queries the response was YES. [2024-06-27 22:46:25,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22001 conditions, 5424 events. 3637/5424 cut-off events. For 23369/23489 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 30118 event pairs, 792 based on Foata normal form. 33/5420 useless extension candidates. Maximal degree in co-relation 21959. Up to 4638 conditions per place. [2024-06-27 22:46:25,941 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 92 selfloop transitions, 44 changer transitions 0/147 dead transitions. [2024-06-27 22:46:25,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 147 transitions, 1286 flow [2024-06-27 22:46:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:25,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:25,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 22:46:25,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-27 22:46:25,943 INFO L175 Difference]: Start difference. First operand has 92 places, 103 transitions, 837 flow. Second operand 7 states and 173 transitions. [2024-06-27 22:46:25,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 147 transitions, 1286 flow [2024-06-27 22:46:25,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 147 transitions, 1207 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:25,982 INFO L231 Difference]: Finished difference. Result has 97 places, 111 transitions, 986 flow [2024-06-27 22:46:25,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=986, PETRI_PLACES=97, PETRI_TRANSITIONS=111} [2024-06-27 22:46:25,982 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 46 predicate places. [2024-06-27 22:46:25,983 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 111 transitions, 986 flow [2024-06-27 22:46:25,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 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) [2024-06-27 22:46:25,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:25,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:25,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:46:25,983 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:25,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:25,984 INFO L85 PathProgramCache]: Analyzing trace with hash 451643479, now seen corresponding path program 1 times [2024-06-27 22:46:25,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:25,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945616557] [2024-06-27 22:46:25,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:25,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:28,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:28,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945616557] [2024-06-27 22:46:28,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945616557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:28,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:28,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:28,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348769359] [2024-06-27 22:46:28,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:28,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:28,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:28,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:28,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:28,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:46:28,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 111 transitions, 986 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:28,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:28,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:46:28,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:30,838 INFO L124 PetriNetUnfolderBase]: 3849/5686 cut-off events. [2024-06-27 22:46:30,838 INFO L125 PetriNetUnfolderBase]: For 26339/26351 co-relation queries the response was YES. [2024-06-27 22:46:30,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23758 conditions, 5686 events. 3849/5686 cut-off events. For 26339/26351 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 30976 event pairs, 907 based on Foata normal form. 16/5698 useless extension candidates. Maximal degree in co-relation 23712. Up to 5217 conditions per place. [2024-06-27 22:46:30,881 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 142 selfloop transitions, 19 changer transitions 0/168 dead transitions. [2024-06-27 22:46:30,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 168 transitions, 1506 flow [2024-06-27 22:46:30,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:46:30,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:46:30,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 22:46:30,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 22:46:30,883 INFO L175 Difference]: Start difference. First operand has 97 places, 111 transitions, 986 flow. Second operand 8 states and 189 transitions. [2024-06-27 22:46:30,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 168 transitions, 1506 flow [2024-06-27 22:46:30,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 168 transitions, 1425 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 22:46:30,931 INFO L231 Difference]: Finished difference. Result has 99 places, 113 transitions, 975 flow [2024-06-27 22:46:30,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=975, PETRI_PLACES=99, PETRI_TRANSITIONS=113} [2024-06-27 22:46:30,932 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 48 predicate places. [2024-06-27 22:46:30,932 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 113 transitions, 975 flow [2024-06-27 22:46:30,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:30,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:30,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:30,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:46:30,933 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:30,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:30,933 INFO L85 PathProgramCache]: Analyzing trace with hash 852472926, now seen corresponding path program 1 times [2024-06-27 22:46:30,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:30,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47794565] [2024-06-27 22:46:30,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:30,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:34,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:34,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47794565] [2024-06-27 22:46:34,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47794565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:34,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:34,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:34,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973877725] [2024-06-27 22:46:34,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:34,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:34,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:34,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:46:34,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 113 transitions, 975 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:34,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:34,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:46:34,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:35,914 INFO L124 PetriNetUnfolderBase]: 3880/5780 cut-off events. [2024-06-27 22:46:35,915 INFO L125 PetriNetUnfolderBase]: For 26437/26449 co-relation queries the response was YES. [2024-06-27 22:46:35,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24048 conditions, 5780 events. 3880/5780 cut-off events. For 26437/26449 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 31819 event pairs, 960 based on Foata normal form. 10/5784 useless extension candidates. Maximal degree in co-relation 24002. Up to 5425 conditions per place. [2024-06-27 22:46:35,947 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 149 selfloop transitions, 22 changer transitions 0/178 dead transitions. [2024-06-27 22:46:35,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 178 transitions, 1567 flow [2024-06-27 22:46:35,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:46:35,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:46:35,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 22:46:35,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 22:46:35,949 INFO L175 Difference]: Start difference. First operand has 99 places, 113 transitions, 975 flow. Second operand 8 states and 190 transitions. [2024-06-27 22:46:35,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 178 transitions, 1567 flow [2024-06-27 22:46:35,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 178 transitions, 1520 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 22:46:35,984 INFO L231 Difference]: Finished difference. Result has 104 places, 125 transitions, 1117 flow [2024-06-27 22:46:35,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1117, PETRI_PLACES=104, PETRI_TRANSITIONS=125} [2024-06-27 22:46:35,984 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 53 predicate places. [2024-06-27 22:46:35,985 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 125 transitions, 1117 flow [2024-06-27 22:46:35,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:35,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:35,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:35,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:46:35,985 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:35,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:35,986 INFO L85 PathProgramCache]: Analyzing trace with hash 852622656, now seen corresponding path program 2 times [2024-06-27 22:46:35,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:35,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180096204] [2024-06-27 22:46:35,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:35,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:38,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:38,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180096204] [2024-06-27 22:46:38,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180096204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:38,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:38,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:38,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453056963] [2024-06-27 22:46:38,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:38,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:38,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:38,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:38,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:38,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:46:38,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 125 transitions, 1117 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:38,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:38,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:46:38,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:40,850 INFO L124 PetriNetUnfolderBase]: 3911/5773 cut-off events. [2024-06-27 22:46:40,850 INFO L125 PetriNetUnfolderBase]: For 29397/29412 co-relation queries the response was YES. [2024-06-27 22:46:40,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25053 conditions, 5773 events. 3911/5773 cut-off events. For 29397/29412 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 31247 event pairs, 878 based on Foata normal form. 6/5772 useless extension candidates. Maximal degree in co-relation 25004. Up to 5211 conditions per place. [2024-06-27 22:46:40,889 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 146 selfloop transitions, 38 changer transitions 0/191 dead transitions. [2024-06-27 22:46:40,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 191 transitions, 1784 flow [2024-06-27 22:46:40,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 22:46:40,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5562310030395137 [2024-06-27 22:46:40,891 INFO L175 Difference]: Start difference. First operand has 104 places, 125 transitions, 1117 flow. Second operand 7 states and 183 transitions. [2024-06-27 22:46:40,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 191 transitions, 1784 flow [2024-06-27 22:46:40,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 191 transitions, 1754 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:40,946 INFO L231 Difference]: Finished difference. Result has 110 places, 136 transitions, 1291 flow [2024-06-27 22:46:40,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1291, PETRI_PLACES=110, PETRI_TRANSITIONS=136} [2024-06-27 22:46:40,947 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 59 predicate places. [2024-06-27 22:46:40,947 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 136 transitions, 1291 flow [2024-06-27 22:46:40,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:40,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:40,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:40,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:46:40,948 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:40,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:40,948 INFO L85 PathProgramCache]: Analyzing trace with hash 852617076, now seen corresponding path program 3 times [2024-06-27 22:46:40,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:40,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20037424] [2024-06-27 22:46:40,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:40,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:43,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:43,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20037424] [2024-06-27 22:46:43,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20037424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:43,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:43,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:43,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510876745] [2024-06-27 22:46:43,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:43,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:43,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:43,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:43,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:43,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:46:43,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 136 transitions, 1291 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:43,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:43,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:46:43,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:45,881 INFO L124 PetriNetUnfolderBase]: 3942/5828 cut-off events. [2024-06-27 22:46:45,882 INFO L125 PetriNetUnfolderBase]: For 34272/34287 co-relation queries the response was YES. [2024-06-27 22:46:45,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26543 conditions, 5828 events. 3942/5828 cut-off events. For 34272/34287 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 31635 event pairs, 880 based on Foata normal form. 6/5827 useless extension candidates. Maximal degree in co-relation 26490. Up to 5243 conditions per place. [2024-06-27 22:46:45,931 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 148 selfloop transitions, 40 changer transitions 0/195 dead transitions. [2024-06-27 22:46:45,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 195 transitions, 1923 flow [2024-06-27 22:46:45,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:45,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:45,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 22:46:45,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5562310030395137 [2024-06-27 22:46:45,933 INFO L175 Difference]: Start difference. First operand has 110 places, 136 transitions, 1291 flow. Second operand 7 states and 183 transitions. [2024-06-27 22:46:45,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 195 transitions, 1923 flow [2024-06-27 22:46:45,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 195 transitions, 1883 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:46,000 INFO L231 Difference]: Finished difference. Result has 115 places, 140 transitions, 1382 flow [2024-06-27 22:46:46,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1382, PETRI_PLACES=115, PETRI_TRANSITIONS=140} [2024-06-27 22:46:46,001 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 64 predicate places. [2024-06-27 22:46:46,001 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 140 transitions, 1382 flow [2024-06-27 22:46:46,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:46,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:46,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:46,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:46:46,002 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:46,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:46,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1725511600, now seen corresponding path program 4 times [2024-06-27 22:46:46,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:46,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616974434] [2024-06-27 22:46:46,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:46,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:48,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:48,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616974434] [2024-06-27 22:46:48,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616974434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:48,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:48,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:48,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74771160] [2024-06-27 22:46:48,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:48,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:48,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:48,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:48,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:48,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:46:48,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 140 transitions, 1382 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:48,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:48,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:46:48,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:50,237 INFO L124 PetriNetUnfolderBase]: 3968/5874 cut-off events. [2024-06-27 22:46:50,237 INFO L125 PetriNetUnfolderBase]: For 35736/35751 co-relation queries the response was YES. [2024-06-27 22:46:50,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26985 conditions, 5874 events. 3968/5874 cut-off events. For 35736/35751 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 31969 event pairs, 876 based on Foata normal form. 6/5873 useless extension candidates. Maximal degree in co-relation 26928. Up to 5409 conditions per place. [2024-06-27 22:46:50,276 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 144 selfloop transitions, 35 changer transitions 0/186 dead transitions. [2024-06-27 22:46:50,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 186 transitions, 1917 flow [2024-06-27 22:46:50,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:50,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:50,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 22:46:50,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 22:46:50,280 INFO L175 Difference]: Start difference. First operand has 115 places, 140 transitions, 1382 flow. Second operand 7 states and 167 transitions. [2024-06-27 22:46:50,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 186 transitions, 1917 flow [2024-06-27 22:46:50,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 186 transitions, 1842 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:50,351 INFO L231 Difference]: Finished difference. Result has 120 places, 146 transitions, 1481 flow [2024-06-27 22:46:50,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1481, PETRI_PLACES=120, PETRI_TRANSITIONS=146} [2024-06-27 22:46:50,366 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 69 predicate places. [2024-06-27 22:46:50,366 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 146 transitions, 1481 flow [2024-06-27 22:46:50,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:50,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:50,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:50,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:46:50,367 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:50,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:50,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1179927056, now seen corresponding path program 1 times [2024-06-27 22:46:50,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:50,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659967557] [2024-06-27 22:46:50,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:50,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:53,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:53,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:53,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659967557] [2024-06-27 22:46:53,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659967557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:53,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:53,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:53,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757362624] [2024-06-27 22:46:53,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:53,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:53,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:53,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:53,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:53,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:46:53,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 146 transitions, 1481 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:53,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:53,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:46:53,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:56,143 INFO L124 PetriNetUnfolderBase]: 4490/6774 cut-off events. [2024-06-27 22:46:56,144 INFO L125 PetriNetUnfolderBase]: For 50257/50365 co-relation queries the response was YES. [2024-06-27 22:46:56,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31256 conditions, 6774 events. 4490/6774 cut-off events. For 50257/50365 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 40024 event pairs, 794 based on Foata normal form. 45/6658 useless extension candidates. Maximal degree in co-relation 31196. Up to 5080 conditions per place. [2024-06-27 22:46:56,193 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 178 selfloop transitions, 45 changer transitions 0/246 dead transitions. [2024-06-27 22:46:56,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 246 transitions, 2303 flow [2024-06-27 22:46:56,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:46:56,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:46:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 286 transitions. [2024-06-27 22:46:56,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-27 22:46:56,195 INFO L175 Difference]: Start difference. First operand has 120 places, 146 transitions, 1481 flow. Second operand 11 states and 286 transitions. [2024-06-27 22:46:56,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 246 transitions, 2303 flow [2024-06-27 22:46:56,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 246 transitions, 2226 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 22:46:56,273 INFO L231 Difference]: Finished difference. Result has 127 places, 150 transitions, 1550 flow [2024-06-27 22:46:56,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1550, PETRI_PLACES=127, PETRI_TRANSITIONS=150} [2024-06-27 22:46:56,274 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 76 predicate places. [2024-06-27 22:46:56,274 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 150 transitions, 1550 flow [2024-06-27 22:46:56,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:56,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:56,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:56,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:46:56,274 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:56,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:56,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1925716752, now seen corresponding path program 2 times [2024-06-27 22:46:56,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:56,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221714121] [2024-06-27 22:46:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:56,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:59,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:59,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221714121] [2024-06-27 22:46:59,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221714121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:59,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:59,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:59,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415815438] [2024-06-27 22:46:59,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:59,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:59,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:59,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:59,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:59,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:46:59,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 150 transitions, 1550 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:59,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:59,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:46:59,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:02,000 INFO L124 PetriNetUnfolderBase]: 4440/6720 cut-off events. [2024-06-27 22:47:02,000 INFO L125 PetriNetUnfolderBase]: For 54196/54305 co-relation queries the response was YES. [2024-06-27 22:47:02,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32041 conditions, 6720 events. 4440/6720 cut-off events. For 54196/54305 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 39883 event pairs, 906 based on Foata normal form. 29/6610 useless extension candidates. Maximal degree in co-relation 31979. Up to 5692 conditions per place. [2024-06-27 22:47:02,055 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 159 selfloop transitions, 42 changer transitions 0/224 dead transitions. [2024-06-27 22:47:02,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 224 transitions, 2162 flow [2024-06-27 22:47:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:47:02,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:47:02,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 22:47:02,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340425531914894 [2024-06-27 22:47:02,060 INFO L175 Difference]: Start difference. First operand has 127 places, 150 transitions, 1550 flow. Second operand 10 states and 251 transitions. [2024-06-27 22:47:02,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 224 transitions, 2162 flow [2024-06-27 22:47:02,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 224 transitions, 2105 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 22:47:02,211 INFO L231 Difference]: Finished difference. Result has 130 places, 150 transitions, 1586 flow [2024-06-27 22:47:02,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1586, PETRI_PLACES=130, PETRI_TRANSITIONS=150} [2024-06-27 22:47:02,213 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 79 predicate places. [2024-06-27 22:47:02,213 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 150 transitions, 1586 flow [2024-06-27 22:47:02,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:02,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:02,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:02,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:47:02,214 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:02,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:02,214 INFO L85 PathProgramCache]: Analyzing trace with hash 661321948, now seen corresponding path program 3 times [2024-06-27 22:47:02,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:02,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787022895] [2024-06-27 22:47:02,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:02,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:05,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:05,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787022895] [2024-06-27 22:47:05,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787022895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:05,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:05,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:05,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083222867] [2024-06-27 22:47:05,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:05,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:05,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:05,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:05,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:05,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:47:05,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 150 transitions, 1586 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:05,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:05,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:47:05,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:08,007 INFO L124 PetriNetUnfolderBase]: 4721/7075 cut-off events. [2024-06-27 22:47:08,007 INFO L125 PetriNetUnfolderBase]: For 59748/59924 co-relation queries the response was YES. [2024-06-27 22:47:08,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34269 conditions, 7075 events. 4721/7075 cut-off events. For 59748/59924 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 41705 event pairs, 915 based on Foata normal form. 20/6952 useless extension candidates. Maximal degree in co-relation 34205. Up to 5643 conditions per place. [2024-06-27 22:47:08,078 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 138 selfloop transitions, 69 changer transitions 0/230 dead transitions. [2024-06-27 22:47:08,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 230 transitions, 2257 flow [2024-06-27 22:47:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:47:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:47:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-06-27 22:47:08,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:47:08,081 INFO L175 Difference]: Start difference. First operand has 130 places, 150 transitions, 1586 flow. Second operand 11 states and 275 transitions. [2024-06-27 22:47:08,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 230 transitions, 2257 flow [2024-06-27 22:47:08,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 230 transitions, 2176 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 22:47:08,166 INFO L231 Difference]: Finished difference. Result has 133 places, 151 transitions, 1664 flow [2024-06-27 22:47:08,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1664, PETRI_PLACES=133, PETRI_TRANSITIONS=151} [2024-06-27 22:47:08,167 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 82 predicate places. [2024-06-27 22:47:08,167 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 151 transitions, 1664 flow [2024-06-27 22:47:08,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:08,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:08,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:08,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:47:08,168 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:08,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:08,168 INFO L85 PathProgramCache]: Analyzing trace with hash 548595720, now seen corresponding path program 4 times [2024-06-27 22:47:08,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:08,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219203356] [2024-06-27 22:47:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:08,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:10,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:10,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219203356] [2024-06-27 22:47:10,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219203356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:10,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:10,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:10,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971328585] [2024-06-27 22:47:10,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:10,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:10,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:10,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:10,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:10,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:47:10,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 151 transitions, 1664 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:10,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:10,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:47:10,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:13,264 INFO L124 PetriNetUnfolderBase]: 5607/8427 cut-off events. [2024-06-27 22:47:13,264 INFO L125 PetriNetUnfolderBase]: For 77276/77452 co-relation queries the response was YES. [2024-06-27 22:47:13,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41272 conditions, 8427 events. 5607/8427 cut-off events. For 77276/77452 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 51370 event pairs, 923 based on Foata normal form. 58/8312 useless extension candidates. Maximal degree in co-relation 41207. Up to 5321 conditions per place. [2024-06-27 22:47:13,320 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 146 selfloop transitions, 65 changer transitions 0/234 dead transitions. [2024-06-27 22:47:13,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 234 transitions, 2494 flow [2024-06-27 22:47:13,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:47:13,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:47:13,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-27 22:47:13,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5697399527186762 [2024-06-27 22:47:13,323 INFO L175 Difference]: Start difference. First operand has 133 places, 151 transitions, 1664 flow. Second operand 9 states and 241 transitions. [2024-06-27 22:47:13,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 234 transitions, 2494 flow [2024-06-27 22:47:13,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 234 transitions, 2345 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 22:47:13,431 INFO L231 Difference]: Finished difference. Result has 134 places, 159 transitions, 1793 flow [2024-06-27 22:47:13,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1793, PETRI_PLACES=134, PETRI_TRANSITIONS=159} [2024-06-27 22:47:13,432 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 83 predicate places. [2024-06-27 22:47:13,432 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 159 transitions, 1793 flow [2024-06-27 22:47:13,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:13,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:13,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:13,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:47:13,433 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:13,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:13,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1951248416, now seen corresponding path program 5 times [2024-06-27 22:47:13,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:13,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709736100] [2024-06-27 22:47:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:13,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:15,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:15,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709736100] [2024-06-27 22:47:15,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709736100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:15,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:15,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:47:15,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334552308] [2024-06-27 22:47:15,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:15,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:47:15,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:15,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:47:15,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:47:15,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:47:15,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 159 transitions, 1793 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:15,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:15,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:47:15,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:18,049 INFO L124 PetriNetUnfolderBase]: 5547/8341 cut-off events. [2024-06-27 22:47:18,050 INFO L125 PetriNetUnfolderBase]: For 85038/85215 co-relation queries the response was YES. [2024-06-27 22:47:18,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42626 conditions, 8341 events. 5547/8341 cut-off events. For 85038/85215 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 50771 event pairs, 1168 based on Foata normal form. 25/8215 useless extension candidates. Maximal degree in co-relation 42560. Up to 6730 conditions per place. [2024-06-27 22:47:18,119 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 134 selfloop transitions, 57 changer transitions 0/214 dead transitions. [2024-06-27 22:47:18,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 214 transitions, 2369 flow [2024-06-27 22:47:18,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:47:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:47:18,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 22:47:18,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 22:47:18,121 INFO L175 Difference]: Start difference. First operand has 134 places, 159 transitions, 1793 flow. Second operand 8 states and 204 transitions. [2024-06-27 22:47:18,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 214 transitions, 2369 flow [2024-06-27 22:47:18,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 214 transitions, 2214 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 22:47:18,323 INFO L231 Difference]: Finished difference. Result has 134 places, 161 transitions, 1808 flow [2024-06-27 22:47:18,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1808, PETRI_PLACES=134, PETRI_TRANSITIONS=161} [2024-06-27 22:47:18,323 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 83 predicate places. [2024-06-27 22:47:18,323 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 161 transitions, 1808 flow [2024-06-27 22:47:18,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:18,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:18,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:18,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:47:18,324 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:18,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:18,324 INFO L85 PathProgramCache]: Analyzing trace with hash 375445698, now seen corresponding path program 6 times [2024-06-27 22:47:18,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:18,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492202184] [2024-06-27 22:47:18,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:18,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:20,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492202184] [2024-06-27 22:47:20,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492202184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:20,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:20,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:20,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906627644] [2024-06-27 22:47:20,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:20,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:20,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:20,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:20,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:20,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 22:47:20,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 161 transitions, 1808 flow. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:20,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:20,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 22:47:20,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:22,079 INFO L124 PetriNetUnfolderBase]: 4806/7687 cut-off events. [2024-06-27 22:47:22,080 INFO L125 PetriNetUnfolderBase]: For 73971/74348 co-relation queries the response was YES. [2024-06-27 22:47:22,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37421 conditions, 7687 events. 4806/7687 cut-off events. For 73971/74348 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 50441 event pairs, 500 based on Foata normal form. 219/7659 useless extension candidates. Maximal degree in co-relation 37356. Up to 3815 conditions per place. [2024-06-27 22:47:22,151 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 91 selfloop transitions, 54 changer transitions 0/203 dead transitions. [2024-06-27 22:47:22,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 203 transitions, 2234 flow [2024-06-27 22:47:22,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 22:47:22,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683890577507599 [2024-06-27 22:47:22,153 INFO L175 Difference]: Start difference. First operand has 134 places, 161 transitions, 1808 flow. Second operand 7 states and 187 transitions. [2024-06-27 22:47:22,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 203 transitions, 2234 flow [2024-06-27 22:47:22,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 203 transitions, 2107 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 22:47:22,280 INFO L231 Difference]: Finished difference. Result has 135 places, 163 transitions, 1877 flow [2024-06-27 22:47:22,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1681, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1877, PETRI_PLACES=135, PETRI_TRANSITIONS=163} [2024-06-27 22:47:22,281 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 84 predicate places. [2024-06-27 22:47:22,281 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 163 transitions, 1877 flow [2024-06-27 22:47:22,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:22,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:22,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:22,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:47:22,282 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:22,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:22,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2076968225, now seen corresponding path program 1 times [2024-06-27 22:47:22,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:22,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925544433] [2024-06-27 22:47:22,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:22,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:25,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:25,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:25,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925544433] [2024-06-27 22:47:25,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925544433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:25,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:25,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:47:25,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043501524] [2024-06-27 22:47:25,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:25,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:47:25,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:25,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:47:25,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:47:25,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:47:25,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 163 transitions, 1877 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:25,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:25,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:47:25,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:28,361 INFO L124 PetriNetUnfolderBase]: 6626/9986 cut-off events. [2024-06-27 22:47:28,361 INFO L125 PetriNetUnfolderBase]: For 83488/83509 co-relation queries the response was YES. [2024-06-27 22:47:28,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49138 conditions, 9986 events. 6626/9986 cut-off events. For 83488/83509 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 61744 event pairs, 1451 based on Foata normal form. 26/10006 useless extension candidates. Maximal degree in co-relation 49072. Up to 8837 conditions per place. [2024-06-27 22:47:28,442 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 223 selfloop transitions, 26 changer transitions 0/256 dead transitions. [2024-06-27 22:47:28,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 256 transitions, 2758 flow [2024-06-27 22:47:28,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:47:28,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:47:28,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-27 22:47:28,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:47:28,445 INFO L175 Difference]: Start difference. First operand has 135 places, 163 transitions, 1877 flow. Second operand 10 states and 250 transitions. [2024-06-27 22:47:28,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 256 transitions, 2758 flow [2024-06-27 22:47:28,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 256 transitions, 2676 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 22:47:28,606 INFO L231 Difference]: Finished difference. Result has 142 places, 168 transitions, 1923 flow [2024-06-27 22:47:28,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1923, PETRI_PLACES=142, PETRI_TRANSITIONS=168} [2024-06-27 22:47:28,607 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 91 predicate places. [2024-06-27 22:47:28,607 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 168 transitions, 1923 flow [2024-06-27 22:47:28,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:28,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:28,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:28,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:47:28,608 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:28,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:28,608 INFO L85 PathProgramCache]: Analyzing trace with hash -252765899, now seen corresponding path program 2 times [2024-06-27 22:47:28,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:28,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533035002] [2024-06-27 22:47:28,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:28,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:32,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:32,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533035002] [2024-06-27 22:47:32,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533035002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:32,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:32,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:47:32,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200374123] [2024-06-27 22:47:32,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:32,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:47:32,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:32,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:47:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:47:32,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:47:32,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 168 transitions, 1923 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:32,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:32,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:47:32,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:34,650 INFO L124 PetriNetUnfolderBase]: 6744/10196 cut-off events. [2024-06-27 22:47:34,650 INFO L125 PetriNetUnfolderBase]: For 77349/77370 co-relation queries the response was YES. [2024-06-27 22:47:34,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48395 conditions, 10196 events. 6744/10196 cut-off events. For 77349/77370 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 63298 event pairs, 1597 based on Foata normal form. 30/10220 useless extension candidates. Maximal degree in co-relation 48328. Up to 9415 conditions per place. [2024-06-27 22:47:34,734 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 207 selfloop transitions, 23 changer transitions 0/237 dead transitions. [2024-06-27 22:47:34,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 237 transitions, 2585 flow [2024-06-27 22:47:34,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:47:34,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:47:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 22:47:34,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-27 22:47:34,749 INFO L175 Difference]: Start difference. First operand has 142 places, 168 transitions, 1923 flow. Second operand 9 states and 217 transitions. [2024-06-27 22:47:34,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 237 transitions, 2585 flow [2024-06-27 22:47:34,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 237 transitions, 2549 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 22:47:34,956 INFO L231 Difference]: Finished difference. Result has 146 places, 169 transitions, 1951 flow [2024-06-27 22:47:34,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1887, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1951, PETRI_PLACES=146, PETRI_TRANSITIONS=169} [2024-06-27 22:47:34,956 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 95 predicate places. [2024-06-27 22:47:34,956 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 169 transitions, 1951 flow [2024-06-27 22:47:34,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:34,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:34,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:34,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:47:34,957 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:34,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:34,957 INFO L85 PathProgramCache]: Analyzing trace with hash 432324129, now seen corresponding path program 3 times [2024-06-27 22:47:34,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:34,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2485059] [2024-06-27 22:47:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:34,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:38,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:38,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2485059] [2024-06-27 22:47:38,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2485059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:38,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:38,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:47:38,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126137678] [2024-06-27 22:47:38,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:38,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:47:38,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:38,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:47:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:47:38,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:47:38,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 169 transitions, 1951 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:38,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:38,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:47:38,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:41,402 INFO L124 PetriNetUnfolderBase]: 6724/10164 cut-off events. [2024-06-27 22:47:41,402 INFO L125 PetriNetUnfolderBase]: For 77843/77864 co-relation queries the response was YES. [2024-06-27 22:47:41,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48448 conditions, 10164 events. 6724/10164 cut-off events. For 77843/77864 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 63088 event pairs, 1539 based on Foata normal form. 26/10184 useless extension candidates. Maximal degree in co-relation 48379. Up to 9163 conditions per place. [2024-06-27 22:47:41,494 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 211 selfloop transitions, 25 changer transitions 0/243 dead transitions. [2024-06-27 22:47:41,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 243 transitions, 2667 flow [2024-06-27 22:47:41,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:47:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:47:41,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 22:47:41,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-27 22:47:41,496 INFO L175 Difference]: Start difference. First operand has 146 places, 169 transitions, 1951 flow. Second operand 9 states and 220 transitions. [2024-06-27 22:47:41,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 243 transitions, 2667 flow [2024-06-27 22:47:41,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 243 transitions, 2616 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 22:47:41,658 INFO L231 Difference]: Finished difference. Result has 149 places, 172 transitions, 2005 flow [2024-06-27 22:47:41,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2005, PETRI_PLACES=149, PETRI_TRANSITIONS=172} [2024-06-27 22:47:41,659 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 98 predicate places. [2024-06-27 22:47:41,659 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 172 transitions, 2005 flow [2024-06-27 22:47:41,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:41,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:41,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:41,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:47:41,660 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:41,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:41,660 INFO L85 PathProgramCache]: Analyzing trace with hash -968344545, now seen corresponding path program 4 times [2024-06-27 22:47:41,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:41,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468293977] [2024-06-27 22:47:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:41,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:45,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:45,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:45,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468293977] [2024-06-27 22:47:45,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468293977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:45,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:45,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:47:45,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955256112] [2024-06-27 22:47:45,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:45,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:47:45,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:45,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:47:45,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:47:45,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:47:45,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 172 transitions, 2005 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:45,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:45,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:47:45,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:48,005 INFO L124 PetriNetUnfolderBase]: 6900/10362 cut-off events. [2024-06-27 22:47:48,005 INFO L125 PetriNetUnfolderBase]: For 83114/83129 co-relation queries the response was YES. [2024-06-27 22:47:48,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49673 conditions, 10362 events. 6900/10362 cut-off events. For 83114/83129 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 63939 event pairs, 1554 based on Foata normal form. 20/10375 useless extension candidates. Maximal degree in co-relation 49602. Up to 9366 conditions per place. [2024-06-27 22:47:48,225 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 185 selfloop transitions, 47 changer transitions 0/239 dead transitions. [2024-06-27 22:47:48,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 239 transitions, 2664 flow [2024-06-27 22:47:48,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:47:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:47:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 22:47:48,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-27 22:47:48,228 INFO L175 Difference]: Start difference. First operand has 149 places, 172 transitions, 2005 flow. Second operand 9 states and 219 transitions. [2024-06-27 22:47:48,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 239 transitions, 2664 flow [2024-06-27 22:47:48,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 239 transitions, 2634 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 22:47:48,373 INFO L231 Difference]: Finished difference. Result has 153 places, 173 transitions, 2086 flow [2024-06-27 22:47:48,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1975, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2086, PETRI_PLACES=153, PETRI_TRANSITIONS=173} [2024-06-27 22:47:48,375 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 102 predicate places. [2024-06-27 22:47:48,375 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 173 transitions, 2086 flow [2024-06-27 22:47:48,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:48,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:48,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:48,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:47:48,375 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:48,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:48,391 INFO L85 PathProgramCache]: Analyzing trace with hash -973851075, now seen corresponding path program 5 times [2024-06-27 22:47:48,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:48,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360320073] [2024-06-27 22:47:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:48,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:51,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:51,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:51,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360320073] [2024-06-27 22:47:51,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360320073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:51,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:51,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:47:51,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423187191] [2024-06-27 22:47:51,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:51,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:47:51,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:51,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:47:51,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:47:52,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:47:52,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 173 transitions, 2086 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:52,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:52,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:47:52,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:54,905 INFO L124 PetriNetUnfolderBase]: 7076/10658 cut-off events. [2024-06-27 22:47:54,905 INFO L125 PetriNetUnfolderBase]: For 87889/87904 co-relation queries the response was YES. [2024-06-27 22:47:54,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51516 conditions, 10658 events. 7076/10658 cut-off events. For 87889/87904 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 66200 event pairs, 1594 based on Foata normal form. 20/10671 useless extension candidates. Maximal degree in co-relation 51443. Up to 9638 conditions per place. [2024-06-27 22:47:55,015 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 188 selfloop transitions, 45 changer transitions 0/240 dead transitions. [2024-06-27 22:47:55,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 240 transitions, 2749 flow [2024-06-27 22:47:55,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:47:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:47:55,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 22:47:55,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-27 22:47:55,017 INFO L175 Difference]: Start difference. First operand has 153 places, 173 transitions, 2086 flow. Second operand 9 states and 219 transitions. [2024-06-27 22:47:55,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 240 transitions, 2749 flow [2024-06-27 22:47:55,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 240 transitions, 2650 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 22:47:55,227 INFO L231 Difference]: Finished difference. Result has 155 places, 174 transitions, 2096 flow [2024-06-27 22:47:55,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2096, PETRI_PLACES=155, PETRI_TRANSITIONS=174} [2024-06-27 22:47:55,228 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 104 predicate places. [2024-06-27 22:47:55,228 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 174 transitions, 2096 flow [2024-06-27 22:47:55,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:55,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:55,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:55,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:47:55,229 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:55,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:55,229 INFO L85 PathProgramCache]: Analyzing trace with hash -973854795, now seen corresponding path program 6 times [2024-06-27 22:47:55,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:55,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079802307] [2024-06-27 22:47:55,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:55,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:58,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:58,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:58,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079802307] [2024-06-27 22:47:58,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079802307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:58,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:58,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:47:58,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561589002] [2024-06-27 22:47:58,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:58,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:47:58,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:58,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:47:58,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:47:58,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:47:58,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 174 transitions, 2096 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:58,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:58,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:47:58,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:01,653 INFO L124 PetriNetUnfolderBase]: 7202/10880 cut-off events. [2024-06-27 22:48:01,654 INFO L125 PetriNetUnfolderBase]: For 91428/91443 co-relation queries the response was YES. [2024-06-27 22:48:01,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52471 conditions, 10880 events. 7202/10880 cut-off events. For 91428/91443 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 68057 event pairs, 1586 based on Foata normal form. 16/10889 useless extension candidates. Maximal degree in co-relation 52398. Up to 9384 conditions per place. [2024-06-27 22:48:01,757 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 191 selfloop transitions, 48 changer transitions 0/246 dead transitions. [2024-06-27 22:48:01,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 246 transitions, 2805 flow [2024-06-27 22:48:01,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:48:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:48:01,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 22:48:01,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-27 22:48:01,759 INFO L175 Difference]: Start difference. First operand has 155 places, 174 transitions, 2096 flow. Second operand 9 states and 221 transitions. [2024-06-27 22:48:01,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 246 transitions, 2805 flow [2024-06-27 22:48:01,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 246 transitions, 2684 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 22:48:01,962 INFO L231 Difference]: Finished difference. Result has 157 places, 177 transitions, 2122 flow [2024-06-27 22:48:01,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1975, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2122, PETRI_PLACES=157, PETRI_TRANSITIONS=177} [2024-06-27 22:48:01,962 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 106 predicate places. [2024-06-27 22:48:01,963 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 177 transitions, 2122 flow [2024-06-27 22:48:01,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:01,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:01,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:01,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:48:01,963 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:01,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash -968129343, now seen corresponding path program 1 times [2024-06-27 22:48:01,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:01,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288241983] [2024-06-27 22:48:01,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:01,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:05,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:05,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288241983] [2024-06-27 22:48:05,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288241983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:05,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:05,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:05,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659727647] [2024-06-27 22:48:05,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:05,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:05,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:05,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:05,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:05,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:05,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 177 transitions, 2122 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:05,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:05,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:05,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:08,742 INFO L124 PetriNetUnfolderBase]: 7582/11492 cut-off events. [2024-06-27 22:48:08,742 INFO L125 PetriNetUnfolderBase]: For 102105/102120 co-relation queries the response was YES. [2024-06-27 22:48:08,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55711 conditions, 11492 events. 7582/11492 cut-off events. For 102105/102120 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 72585 event pairs, 1517 based on Foata normal form. 16/11501 useless extension candidates. Maximal degree in co-relation 55637. Up to 9414 conditions per place. [2024-06-27 22:48:08,837 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 194 selfloop transitions, 52 changer transitions 0/253 dead transitions. [2024-06-27 22:48:08,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 253 transitions, 2967 flow [2024-06-27 22:48:08,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:48:08,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:48:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 22:48:08,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-27 22:48:08,839 INFO L175 Difference]: Start difference. First operand has 157 places, 177 transitions, 2122 flow. Second operand 9 states and 224 transitions. [2024-06-27 22:48:08,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 253 transitions, 2967 flow [2024-06-27 22:48:09,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 253 transitions, 2898 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:09,059 INFO L231 Difference]: Finished difference. Result has 162 places, 182 transitions, 2242 flow [2024-06-27 22:48:09,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2242, PETRI_PLACES=162, PETRI_TRANSITIONS=182} [2024-06-27 22:48:09,060 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 111 predicate places. [2024-06-27 22:48:09,060 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 182 transitions, 2242 flow [2024-06-27 22:48:09,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:09,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:09,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:09,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:48:09,060 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:09,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:09,061 INFO L85 PathProgramCache]: Analyzing trace with hash -173400567, now seen corresponding path program 7 times [2024-06-27 22:48:09,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:09,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789768075] [2024-06-27 22:48:09,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:09,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:12,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:12,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789768075] [2024-06-27 22:48:12,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789768075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:12,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:12,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:12,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168816046] [2024-06-27 22:48:12,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:12,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:12,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:12,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:12,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:12,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 182 transitions, 2242 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:12,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:12,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:12,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:14,791 INFO L124 PetriNetUnfolderBase]: 7904/12040 cut-off events. [2024-06-27 22:48:14,792 INFO L125 PetriNetUnfolderBase]: For 115287/115302 co-relation queries the response was YES. [2024-06-27 22:48:14,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59494 conditions, 12040 events. 7904/12040 cut-off events. For 115287/115302 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 77410 event pairs, 1469 based on Foata normal form. 16/12049 useless extension candidates. Maximal degree in co-relation 59417. Up to 9679 conditions per place. [2024-06-27 22:48:14,898 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 208 selfloop transitions, 49 changer transitions 0/264 dead transitions. [2024-06-27 22:48:14,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 264 transitions, 3171 flow [2024-06-27 22:48:14,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:48:14,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:48:14,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-27 22:48:14,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2024-06-27 22:48:14,900 INFO L175 Difference]: Start difference. First operand has 162 places, 182 transitions, 2242 flow. Second operand 9 states and 227 transitions. [2024-06-27 22:48:14,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 264 transitions, 3171 flow [2024-06-27 22:48:15,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 264 transitions, 3090 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:15,171 INFO L231 Difference]: Finished difference. Result has 168 places, 189 transitions, 2396 flow [2024-06-27 22:48:15,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2396, PETRI_PLACES=168, PETRI_TRANSITIONS=189} [2024-06-27 22:48:15,171 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 117 predicate places. [2024-06-27 22:48:15,171 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 189 transitions, 2396 flow [2024-06-27 22:48:15,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:15,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:15,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:15,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:48:15,173 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:15,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash 359307919, now seen corresponding path program 8 times [2024-06-27 22:48:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:15,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032356669] [2024-06-27 22:48:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:15,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:18,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:18,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032356669] [2024-06-27 22:48:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032356669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:18,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:18,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802877042] [2024-06-27 22:48:18,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:18,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:18,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:18,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:18,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:18,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:18,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 189 transitions, 2396 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:18,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:18,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:18,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:21,239 INFO L124 PetriNetUnfolderBase]: 7876/11996 cut-off events. [2024-06-27 22:48:21,239 INFO L125 PetriNetUnfolderBase]: For 117698/117713 co-relation queries the response was YES. [2024-06-27 22:48:21,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60341 conditions, 11996 events. 7876/11996 cut-off events. For 117698/117713 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 76856 event pairs, 1635 based on Foata normal form. 20/12009 useless extension candidates. Maximal degree in co-relation 60260. Up to 10709 conditions per place. [2024-06-27 22:48:21,379 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 197 selfloop transitions, 40 changer transitions 0/244 dead transitions. [2024-06-27 22:48:21,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 244 transitions, 3031 flow [2024-06-27 22:48:21,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:48:21,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:48:21,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 22:48:21,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 22:48:21,395 INFO L175 Difference]: Start difference. First operand has 168 places, 189 transitions, 2396 flow. Second operand 8 states and 196 transitions. [2024-06-27 22:48:21,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 244 transitions, 3031 flow [2024-06-27 22:48:21,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 244 transitions, 2945 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:21,840 INFO L231 Difference]: Finished difference. Result has 171 places, 189 transitions, 2404 flow [2024-06-27 22:48:21,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2404, PETRI_PLACES=171, PETRI_TRANSITIONS=189} [2024-06-27 22:48:21,845 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 120 predicate places. [2024-06-27 22:48:21,845 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 189 transitions, 2404 flow [2024-06-27 22:48:21,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:21,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:21,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:21,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:48:21,845 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:21,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:21,846 INFO L85 PathProgramCache]: Analyzing trace with hash 359160049, now seen corresponding path program 9 times [2024-06-27 22:48:21,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:21,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717212108] [2024-06-27 22:48:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:21,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:24,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:24,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717212108] [2024-06-27 22:48:24,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717212108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:24,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:24,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:24,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807867319] [2024-06-27 22:48:24,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:24,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:24,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:24,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:24,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:24,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:24,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 189 transitions, 2404 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:24,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:24,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:24,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:27,612 INFO L124 PetriNetUnfolderBase]: 7856/11952 cut-off events. [2024-06-27 22:48:27,612 INFO L125 PetriNetUnfolderBase]: For 110352/110367 co-relation queries the response was YES. [2024-06-27 22:48:27,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59858 conditions, 11952 events. 7856/11952 cut-off events. For 110352/110367 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 76332 event pairs, 1535 based on Foata normal form. 16/11961 useless extension candidates. Maximal degree in co-relation 59776. Up to 10237 conditions per place. [2024-06-27 22:48:27,723 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 200 selfloop transitions, 43 changer transitions 0/250 dead transitions. [2024-06-27 22:48:27,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 250 transitions, 3112 flow [2024-06-27 22:48:27,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:48:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:48:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 22:48:27,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 22:48:27,729 INFO L175 Difference]: Start difference. First operand has 171 places, 189 transitions, 2404 flow. Second operand 8 states and 197 transitions. [2024-06-27 22:48:27,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 250 transitions, 3112 flow [2024-06-27 22:48:28,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 250 transitions, 3011 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 22:48:28,022 INFO L231 Difference]: Finished difference. Result has 173 places, 192 transitions, 2466 flow [2024-06-27 22:48:28,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2466, PETRI_PLACES=173, PETRI_TRANSITIONS=192} [2024-06-27 22:48:28,023 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 122 predicate places. [2024-06-27 22:48:28,023 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 192 transitions, 2466 flow [2024-06-27 22:48:28,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:28,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:28,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:28,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:48:28,024 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:28,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:28,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1246083953, now seen corresponding path program 10 times [2024-06-27 22:48:28,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:28,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295242010] [2024-06-27 22:48:28,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:28,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:30,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:30,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295242010] [2024-06-27 22:48:30,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295242010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:30,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:30,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:48:30,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810651416] [2024-06-27 22:48:30,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:30,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:48:30,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:30,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:48:30,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:48:30,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 22:48:30,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 192 transitions, 2466 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:30,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:30,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 22:48:30,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:32,942 INFO L124 PetriNetUnfolderBase]: 6385/10418 cut-off events. [2024-06-27 22:48:32,942 INFO L125 PetriNetUnfolderBase]: For 103751/103925 co-relation queries the response was YES. [2024-06-27 22:48:33,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52746 conditions, 10418 events. 6385/10418 cut-off events. For 103751/103925 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 72355 event pairs, 492 based on Foata normal form. 125/10367 useless extension candidates. Maximal degree in co-relation 52663. Up to 7313 conditions per place. [2024-06-27 22:48:33,042 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 145 selfloop transitions, 52 changer transitions 0/239 dead transitions. [2024-06-27 22:48:33,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 239 transitions, 3044 flow [2024-06-27 22:48:33,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:48:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:48:33,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 22:48:33,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5501519756838906 [2024-06-27 22:48:33,044 INFO L175 Difference]: Start difference. First operand has 173 places, 192 transitions, 2466 flow. Second operand 7 states and 181 transitions. [2024-06-27 22:48:33,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 239 transitions, 3044 flow [2024-06-27 22:48:33,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 239 transitions, 2992 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:33,266 INFO L231 Difference]: Finished difference. Result has 177 places, 197 transitions, 2665 flow [2024-06-27 22:48:33,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2414, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2665, PETRI_PLACES=177, PETRI_TRANSITIONS=197} [2024-06-27 22:48:33,267 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 126 predicate places. [2024-06-27 22:48:33,267 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 197 transitions, 2665 flow [2024-06-27 22:48:33,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:33,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:33,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:33,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:48:33,268 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:33,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:33,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1220612799, now seen corresponding path program 2 times [2024-06-27 22:48:33,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:33,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130207230] [2024-06-27 22:48:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:33,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:38,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:38,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:38,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130207230] [2024-06-27 22:48:38,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130207230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:38,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:38,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:38,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545058516] [2024-06-27 22:48:38,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:38,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:38,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:38,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:38,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:38,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:38,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 197 transitions, 2665 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:38,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:38,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:38,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:41,532 INFO L124 PetriNetUnfolderBase]: 8206/12586 cut-off events. [2024-06-27 22:48:41,532 INFO L125 PetriNetUnfolderBase]: For 117948/117963 co-relation queries the response was YES. [2024-06-27 22:48:41,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64565 conditions, 12586 events. 8206/12586 cut-off events. For 117948/117963 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 81846 event pairs, 1673 based on Foata normal form. 16/12595 useless extension candidates. Maximal degree in co-relation 64479. Up to 10168 conditions per place. [2024-06-27 22:48:41,670 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 227 selfloop transitions, 56 changer transitions 0/290 dead transitions. [2024-06-27 22:48:41,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 290 transitions, 3593 flow [2024-06-27 22:48:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:48:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:48:41,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-27 22:48:41,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-27 22:48:41,671 INFO L175 Difference]: Start difference. First operand has 177 places, 197 transitions, 2665 flow. Second operand 10 states and 246 transitions. [2024-06-27 22:48:41,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 290 transitions, 3593 flow [2024-06-27 22:48:42,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 290 transitions, 3530 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:42,012 INFO L231 Difference]: Finished difference. Result has 183 places, 208 transitions, 2869 flow [2024-06-27 22:48:42,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2869, PETRI_PLACES=183, PETRI_TRANSITIONS=208} [2024-06-27 22:48:42,017 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 132 predicate places. [2024-06-27 22:48:42,017 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 208 transitions, 2869 flow [2024-06-27 22:48:42,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:42,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:42,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:42,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:48:42,025 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:42,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:42,025 INFO L85 PathProgramCache]: Analyzing trace with hash 467152603, now seen corresponding path program 1 times [2024-06-27 22:48:42,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:42,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552951194] [2024-06-27 22:48:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:42,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:45,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:45,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552951194] [2024-06-27 22:48:45,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552951194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:45,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:45,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:48:45,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095789564] [2024-06-27 22:48:45,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:45,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:48:45,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:45,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:48:45,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:48:45,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:48:45,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 208 transitions, 2869 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:45,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:45,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:48:45,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:48,728 INFO L124 PetriNetUnfolderBase]: 7835/12239 cut-off events. [2024-06-27 22:48:48,728 INFO L125 PetriNetUnfolderBase]: For 110543/110632 co-relation queries the response was YES. [2024-06-27 22:48:48,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63362 conditions, 12239 events. 7835/12239 cut-off events. For 110543/110632 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 81954 event pairs, 1881 based on Foata normal form. 45/12216 useless extension candidates. Maximal degree in co-relation 63275. Up to 11044 conditions per place. [2024-06-27 22:48:48,850 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 218 selfloop transitions, 53 changer transitions 0/298 dead transitions. [2024-06-27 22:48:48,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 298 transitions, 3782 flow [2024-06-27 22:48:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:48:48,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:48:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 22:48:48,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404255319148936 [2024-06-27 22:48:48,852 INFO L175 Difference]: Start difference. First operand has 183 places, 208 transitions, 2869 flow. Second operand 10 states and 254 transitions. [2024-06-27 22:48:48,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 298 transitions, 3782 flow [2024-06-27 22:48:49,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 298 transitions, 3664 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 22:48:49,098 INFO L231 Difference]: Finished difference. Result has 188 places, 227 transitions, 3077 flow [2024-06-27 22:48:49,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2755, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3077, PETRI_PLACES=188, PETRI_TRANSITIONS=227} [2024-06-27 22:48:49,098 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 137 predicate places. [2024-06-27 22:48:49,099 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 227 transitions, 3077 flow [2024-06-27 22:48:49,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:49,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:49,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:49,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:48:49,099 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:49,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:49,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1991899313, now seen corresponding path program 1 times [2024-06-27 22:48:49,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:49,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476146955] [2024-06-27 22:48:49,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:49,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:51,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:51,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476146955] [2024-06-27 22:48:51,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476146955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:51,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:51,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:51,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973428683] [2024-06-27 22:48:51,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:51,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:51,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:51,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:51,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:51,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:51,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 227 transitions, 3077 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:51,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:51,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:51,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:55,009 INFO L124 PetriNetUnfolderBase]: 8326/12960 cut-off events. [2024-06-27 22:48:55,009 INFO L125 PetriNetUnfolderBase]: For 123667/123679 co-relation queries the response was YES. [2024-06-27 22:48:55,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68557 conditions, 12960 events. 8326/12960 cut-off events. For 123667/123679 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 86571 event pairs, 2586 based on Foata normal form. 10/12966 useless extension candidates. Maximal degree in co-relation 68468. Up to 11810 conditions per place. [2024-06-27 22:48:55,184 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 237 selfloop transitions, 36 changer transitions 0/280 dead transitions. [2024-06-27 22:48:55,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 280 transitions, 3904 flow [2024-06-27 22:48:55,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:48:55,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:48:55,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 22:48:55,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-27 22:48:55,186 INFO L175 Difference]: Start difference. First operand has 188 places, 227 transitions, 3077 flow. Second operand 7 states and 176 transitions. [2024-06-27 22:48:55,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 280 transitions, 3904 flow [2024-06-27 22:48:55,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 280 transitions, 3813 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 22:48:55,499 INFO L231 Difference]: Finished difference. Result has 192 places, 233 transitions, 3138 flow [2024-06-27 22:48:55,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2987, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3138, PETRI_PLACES=192, PETRI_TRANSITIONS=233} [2024-06-27 22:48:55,500 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 141 predicate places. [2024-06-27 22:48:55,500 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 233 transitions, 3138 flow [2024-06-27 22:48:55,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:55,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:55,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:55,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:48:55,501 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:55,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:55,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1824182001, now seen corresponding path program 2 times [2024-06-27 22:48:55,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:55,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644209821] [2024-06-27 22:48:55,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:55,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:58,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:58,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644209821] [2024-06-27 22:48:58,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644209821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:58,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:58,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:58,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341955327] [2024-06-27 22:48:58,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:58,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:58,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:58,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:58,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:58,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:48:58,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 233 transitions, 3138 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:58,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:58,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:48:58,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:01,876 INFO L124 PetriNetUnfolderBase]: 8441/13131 cut-off events. [2024-06-27 22:49:01,876 INFO L125 PetriNetUnfolderBase]: For 130546/130558 co-relation queries the response was YES. [2024-06-27 22:49:01,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70326 conditions, 13131 events. 8441/13131 cut-off events. For 130546/130558 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 87789 event pairs, 2584 based on Foata normal form. 10/13137 useless extension candidates. Maximal degree in co-relation 70235. Up to 12066 conditions per place. [2024-06-27 22:49:02,019 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 242 selfloop transitions, 34 changer transitions 0/283 dead transitions. [2024-06-27 22:49:02,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 283 transitions, 3946 flow [2024-06-27 22:49:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:49:02,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:49:02,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 22:49:02,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48138297872340424 [2024-06-27 22:49:02,021 INFO L175 Difference]: Start difference. First operand has 192 places, 233 transitions, 3138 flow. Second operand 8 states and 181 transitions. [2024-06-27 22:49:02,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 283 transitions, 3946 flow [2024-06-27 22:49:02,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 283 transitions, 3895 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 22:49:02,327 INFO L231 Difference]: Finished difference. Result has 197 places, 241 transitions, 3273 flow [2024-06-27 22:49:02,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3273, PETRI_PLACES=197, PETRI_TRANSITIONS=241} [2024-06-27 22:49:02,327 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 146 predicate places. [2024-06-27 22:49:02,328 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 241 transitions, 3273 flow [2024-06-27 22:49:02,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:02,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:02,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:02,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:49:02,328 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:02,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:02,329 INFO L85 PathProgramCache]: Analyzing trace with hash 975430129, now seen corresponding path program 3 times [2024-06-27 22:49:02,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:02,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106590401] [2024-06-27 22:49:02,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:02,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:05,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:05,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106590401] [2024-06-27 22:49:05,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106590401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:05,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:05,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:49:05,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260232873] [2024-06-27 22:49:05,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:05,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:49:05,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:05,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:49:05,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:49:05,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:05,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 241 transitions, 3273 flow. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:05,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:05,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:05,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:08,502 INFO L124 PetriNetUnfolderBase]: 8435/13124 cut-off events. [2024-06-27 22:49:08,502 INFO L125 PetriNetUnfolderBase]: For 134621/134670 co-relation queries the response was YES. [2024-06-27 22:49:08,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70598 conditions, 13124 events. 8435/13124 cut-off events. For 134621/134670 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 87692 event pairs, 2599 based on Foata normal form. 27/13144 useless extension candidates. Maximal degree in co-relation 70505. Up to 12012 conditions per place. [2024-06-27 22:49:08,639 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 245 selfloop transitions, 36 changer transitions 0/288 dead transitions. [2024-06-27 22:49:08,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 288 transitions, 4016 flow [2024-06-27 22:49:08,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:49:08,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:49:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-27 22:49:08,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47044917257683216 [2024-06-27 22:49:08,641 INFO L175 Difference]: Start difference. First operand has 197 places, 241 transitions, 3273 flow. Second operand 9 states and 199 transitions. [2024-06-27 22:49:08,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 288 transitions, 4016 flow [2024-06-27 22:49:08,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 288 transitions, 3923 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 22:49:08,953 INFO L231 Difference]: Finished difference. Result has 201 places, 241 transitions, 3259 flow [2024-06-27 22:49:08,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3180, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3259, PETRI_PLACES=201, PETRI_TRANSITIONS=241} [2024-06-27 22:49:08,954 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 150 predicate places. [2024-06-27 22:49:08,954 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 241 transitions, 3259 flow [2024-06-27 22:49:08,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:08,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:08,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:08,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:49:08,955 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:08,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:08,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1282067536, now seen corresponding path program 1 times [2024-06-27 22:49:08,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:08,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064912148] [2024-06-27 22:49:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:08,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:12,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:12,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064912148] [2024-06-27 22:49:12,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064912148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:12,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:12,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:12,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522018147] [2024-06-27 22:49:12,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:12,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:12,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:12,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:12,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:12,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:12,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 241 transitions, 3259 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:12,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:12,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:12,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:15,833 INFO L124 PetriNetUnfolderBase]: 8492/13400 cut-off events. [2024-06-27 22:49:15,833 INFO L125 PetriNetUnfolderBase]: For 147248/147248 co-relation queries the response was YES. [2024-06-27 22:49:15,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71254 conditions, 13400 events. 8492/13400 cut-off events. For 147248/147248 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 92126 event pairs, 4250 based on Foata normal form. 1/13399 useless extension candidates. Maximal degree in co-relation 71160. Up to 12104 conditions per place. [2024-06-27 22:49:15,975 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 277 selfloop transitions, 40 changer transitions 0/324 dead transitions. [2024-06-27 22:49:15,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 324 transitions, 4540 flow [2024-06-27 22:49:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:49:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:49:15,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-27 22:49:15,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-27 22:49:15,977 INFO L175 Difference]: Start difference. First operand has 201 places, 241 transitions, 3259 flow. Second operand 8 states and 201 transitions. [2024-06-27 22:49:15,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 324 transitions, 4540 flow [2024-06-27 22:49:16,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 324 transitions, 4382 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 22:49:16,276 INFO L231 Difference]: Finished difference. Result has 204 places, 264 transitions, 3570 flow [2024-06-27 22:49:16,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3141, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3570, PETRI_PLACES=204, PETRI_TRANSITIONS=264} [2024-06-27 22:49:16,277 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 153 predicate places. [2024-06-27 22:49:16,277 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 264 transitions, 3570 flow [2024-06-27 22:49:16,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:16,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:16,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:16,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:49:16,277 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:16,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:16,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1623057772, now seen corresponding path program 2 times [2024-06-27 22:49:16,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:16,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892814337] [2024-06-27 22:49:16,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:16,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:19,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:19,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892814337] [2024-06-27 22:49:19,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892814337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:19,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:19,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:19,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829741947] [2024-06-27 22:49:19,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:19,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:19,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:19,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:19,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:19,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:19,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 264 transitions, 3570 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:19,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:19,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:19,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:22,810 INFO L124 PetriNetUnfolderBase]: 8613/13575 cut-off events. [2024-06-27 22:49:22,811 INFO L125 PetriNetUnfolderBase]: For 156897/156897 co-relation queries the response was YES. [2024-06-27 22:49:22,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74349 conditions, 13575 events. 8613/13575 cut-off events. For 156897/156897 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 93254 event pairs, 4254 based on Foata normal form. 1/13574 useless extension candidates. Maximal degree in co-relation 74251. Up to 12327 conditions per place. [2024-06-27 22:49:22,957 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 285 selfloop transitions, 37 changer transitions 0/329 dead transitions. [2024-06-27 22:49:22,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 329 transitions, 4646 flow [2024-06-27 22:49:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:49:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:49:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-27 22:49:22,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48699763593380613 [2024-06-27 22:49:22,959 INFO L175 Difference]: Start difference. First operand has 204 places, 264 transitions, 3570 flow. Second operand 9 states and 206 transitions. [2024-06-27 22:49:22,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 329 transitions, 4646 flow [2024-06-27 22:49:23,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 329 transitions, 4568 flow, removed 39 selfloop flow, removed 0 redundant places. [2024-06-27 22:49:23,373 INFO L231 Difference]: Finished difference. Result has 215 places, 277 transitions, 3788 flow [2024-06-27 22:49:23,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3514, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3788, PETRI_PLACES=215, PETRI_TRANSITIONS=277} [2024-06-27 22:49:23,374 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 164 predicate places. [2024-06-27 22:49:23,374 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 277 transitions, 3788 flow [2024-06-27 22:49:23,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:23,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:23,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:23,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:49:23,375 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:23,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:23,375 INFO L85 PathProgramCache]: Analyzing trace with hash 715074906, now seen corresponding path program 3 times [2024-06-27 22:49:23,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:23,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056886962] [2024-06-27 22:49:23,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:23,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:26,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:26,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:26,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056886962] [2024-06-27 22:49:26,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056886962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:26,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:26,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:26,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708448943] [2024-06-27 22:49:26,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:26,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:26,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:26,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:26,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:26,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:26,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 277 transitions, 3788 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:26,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:26,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:26,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:30,650 INFO L124 PetriNetUnfolderBase]: 8626/13604 cut-off events. [2024-06-27 22:49:30,651 INFO L125 PetriNetUnfolderBase]: For 163375/163375 co-relation queries the response was YES. [2024-06-27 22:49:30,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75464 conditions, 13604 events. 8626/13604 cut-off events. For 163375/163375 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 93634 event pairs, 4258 based on Foata normal form. 1/13603 useless extension candidates. Maximal degree in co-relation 75360. Up to 12334 conditions per place. [2024-06-27 22:49:30,806 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 296 selfloop transitions, 46 changer transitions 0/349 dead transitions. [2024-06-27 22:49:30,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 349 transitions, 4881 flow [2024-06-27 22:49:30,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:49:30,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:49:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 248 transitions. [2024-06-27 22:49:30,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796905222437137 [2024-06-27 22:49:30,808 INFO L175 Difference]: Start difference. First operand has 215 places, 277 transitions, 3788 flow. Second operand 11 states and 248 transitions. [2024-06-27 22:49:30,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 349 transitions, 4881 flow [2024-06-27 22:49:31,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 349 transitions, 4803 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 22:49:31,158 INFO L231 Difference]: Finished difference. Result has 224 places, 286 transitions, 3954 flow [2024-06-27 22:49:31,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3714, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3954, PETRI_PLACES=224, PETRI_TRANSITIONS=286} [2024-06-27 22:49:31,159 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 173 predicate places. [2024-06-27 22:49:31,159 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 286 transitions, 3954 flow [2024-06-27 22:49:31,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:31,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:31,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:31,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:49:31,160 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:31,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:31,160 INFO L85 PathProgramCache]: Analyzing trace with hash 173570650, now seen corresponding path program 4 times [2024-06-27 22:49:31,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:31,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5364353] [2024-06-27 22:49:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:31,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:34,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:34,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5364353] [2024-06-27 22:49:34,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5364353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:34,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:34,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:34,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069144257] [2024-06-27 22:49:34,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:34,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:34,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:34,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:34,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:34,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:34,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 286 transitions, 3954 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:34,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:34,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:34,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:38,386 INFO L124 PetriNetUnfolderBase]: 8698/13683 cut-off events. [2024-06-27 22:49:38,386 INFO L125 PetriNetUnfolderBase]: For 175286/175301 co-relation queries the response was YES. [2024-06-27 22:49:38,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78166 conditions, 13683 events. 8698/13683 cut-off events. For 175286/175301 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 93726 event pairs, 4250 based on Foata normal form. 11/13691 useless extension candidates. Maximal degree in co-relation 78058. Up to 12312 conditions per place. [2024-06-27 22:49:38,567 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 306 selfloop transitions, 55 changer transitions 0/368 dead transitions. [2024-06-27 22:49:38,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 368 transitions, 5346 flow [2024-06-27 22:49:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:49:38,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:49:38,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 267 transitions. [2024-06-27 22:49:38,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734042553191489 [2024-06-27 22:49:38,569 INFO L175 Difference]: Start difference. First operand has 224 places, 286 transitions, 3954 flow. Second operand 12 states and 267 transitions. [2024-06-27 22:49:38,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 368 transitions, 5346 flow [2024-06-27 22:49:39,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 368 transitions, 5224 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 22:49:39,020 INFO L231 Difference]: Finished difference. Result has 233 places, 300 transitions, 4199 flow [2024-06-27 22:49:39,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3836, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4199, PETRI_PLACES=233, PETRI_TRANSITIONS=300} [2024-06-27 22:49:39,022 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 182 predicate places. [2024-06-27 22:49:39,022 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 300 transitions, 4199 flow [2024-06-27 22:49:39,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:39,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:39,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:39,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:49:39,023 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:39,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:39,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1475799700, now seen corresponding path program 5 times [2024-06-27 22:49:39,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:39,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200922637] [2024-06-27 22:49:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:39,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:42,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:42,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200922637] [2024-06-27 22:49:42,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200922637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:42,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:42,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:42,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162870356] [2024-06-27 22:49:42,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:42,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:42,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:42,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:42,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:42,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:42,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 300 transitions, 4199 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:42,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:42,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:42,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:46,082 INFO L124 PetriNetUnfolderBase]: 8695/13684 cut-off events. [2024-06-27 22:49:46,082 INFO L125 PetriNetUnfolderBase]: For 195093/195108 co-relation queries the response was YES. [2024-06-27 22:49:46,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80722 conditions, 13684 events. 8695/13684 cut-off events. For 195093/195108 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 93782 event pairs, 4252 based on Foata normal form. 11/13692 useless extension candidates. Maximal degree in co-relation 80609. Up to 12310 conditions per place. [2024-06-27 22:49:46,271 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 298 selfloop transitions, 50 changer transitions 0/355 dead transitions. [2024-06-27 22:49:46,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 355 transitions, 5327 flow [2024-06-27 22:49:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:49:46,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:49:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 224 transitions. [2024-06-27 22:49:46,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2024-06-27 22:49:46,273 INFO L175 Difference]: Start difference. First operand has 233 places, 300 transitions, 4199 flow. Second operand 10 states and 224 transitions. [2024-06-27 22:49:46,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 355 transitions, 5327 flow [2024-06-27 22:49:46,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 355 transitions, 5126 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-27 22:49:46,742 INFO L231 Difference]: Finished difference. Result has 238 places, 300 transitions, 4105 flow [2024-06-27 22:49:46,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3998, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4105, PETRI_PLACES=238, PETRI_TRANSITIONS=300} [2024-06-27 22:49:46,743 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 187 predicate places. [2024-06-27 22:49:46,743 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 300 transitions, 4105 flow [2024-06-27 22:49:46,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:46,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:46,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:46,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:49:46,744 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:46,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:46,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1042175414, now seen corresponding path program 6 times [2024-06-27 22:49:46,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:46,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370983039] [2024-06-27 22:49:46,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:46,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:50,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:50,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370983039] [2024-06-27 22:49:50,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370983039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:50,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:50,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:49:50,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032744626] [2024-06-27 22:49:50,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:50,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:49:50,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:50,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:49:50,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:49:50,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:49:50,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 300 transitions, 4105 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:50,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:50,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:49:50,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:53,894 INFO L124 PetriNetUnfolderBase]: 8716/13698 cut-off events. [2024-06-27 22:49:53,894 INFO L125 PetriNetUnfolderBase]: For 198717/198732 co-relation queries the response was YES. [2024-06-27 22:49:54,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80543 conditions, 13698 events. 8716/13698 cut-off events. For 198717/198732 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 93641 event pairs, 4255 based on Foata normal form. 11/13706 useless extension candidates. Maximal degree in co-relation 80430. Up to 12320 conditions per place. [2024-06-27 22:49:54,087 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 287 selfloop transitions, 74 changer transitions 0/368 dead transitions. [2024-06-27 22:49:54,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 368 transitions, 5369 flow [2024-06-27 22:49:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:49:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:49:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 241 transitions. [2024-06-27 22:49:54,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661508704061896 [2024-06-27 22:49:54,089 INFO L175 Difference]: Start difference. First operand has 238 places, 300 transitions, 4105 flow. Second operand 11 states and 241 transitions. [2024-06-27 22:49:54,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 368 transitions, 5369 flow [2024-06-27 22:49:54,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 368 transitions, 5282 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 22:49:54,553 INFO L231 Difference]: Finished difference. Result has 244 places, 312 transitions, 4454 flow [2024-06-27 22:49:54,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4028, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4454, PETRI_PLACES=244, PETRI_TRANSITIONS=312} [2024-06-27 22:49:54,554 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 193 predicate places. [2024-06-27 22:49:54,554 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 312 transitions, 4454 flow [2024-06-27 22:49:54,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:54,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:54,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:54,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:49:54,554 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:54,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:54,555 INFO L85 PathProgramCache]: Analyzing trace with hash 867102686, now seen corresponding path program 1 times [2024-06-27 22:49:54,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:54,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301936581] [2024-06-27 22:49:54,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:54,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:00,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:00,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301936581] [2024-06-27 22:50:00,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301936581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:00,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:00,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:50:00,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646129400] [2024-06-27 22:50:00,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:00,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:50:00,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:00,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:50:00,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:50:00,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:00,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 312 transitions, 4454 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:00,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:00,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:00,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:03,982 INFO L124 PetriNetUnfolderBase]: 8796/13723 cut-off events. [2024-06-27 22:50:03,983 INFO L125 PetriNetUnfolderBase]: For 216513/216525 co-relation queries the response was YES. [2024-06-27 22:50:04,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83788 conditions, 13723 events. 8796/13723 cut-off events. For 216513/216525 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 92245 event pairs, 2828 based on Foata normal form. 9/13728 useless extension candidates. Maximal degree in co-relation 83672. Up to 12508 conditions per place. [2024-06-27 22:50:04,160 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 330 selfloop transitions, 54 changer transitions 0/391 dead transitions. [2024-06-27 22:50:04,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 391 transitions, 5891 flow [2024-06-27 22:50:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:50:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:50:04,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 240 transitions. [2024-06-27 22:50:04,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 22:50:04,162 INFO L175 Difference]: Start difference. First operand has 244 places, 312 transitions, 4454 flow. Second operand 10 states and 240 transitions. [2024-06-27 22:50:04,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 391 transitions, 5891 flow [2024-06-27 22:50:04,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 391 transitions, 5703 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-27 22:50:04,893 INFO L231 Difference]: Finished difference. Result has 249 places, 324 transitions, 4554 flow [2024-06-27 22:50:04,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4266, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4554, PETRI_PLACES=249, PETRI_TRANSITIONS=324} [2024-06-27 22:50:04,893 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 198 predicate places. [2024-06-27 22:50:04,893 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 324 transitions, 4554 flow [2024-06-27 22:50:04,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:04,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:04,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:04,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:50:04,894 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:04,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:04,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1225065298, now seen corresponding path program 2 times [2024-06-27 22:50:04,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:04,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213427773] [2024-06-27 22:50:04,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:04,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:09,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:09,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213427773] [2024-06-27 22:50:09,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213427773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:09,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:09,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:50:09,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595757814] [2024-06-27 22:50:09,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:09,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:50:09,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:09,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:50:09,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:50:09,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:09,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 324 transitions, 4554 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:09,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:09,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:09,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:13,579 INFO L124 PetriNetUnfolderBase]: 8853/13812 cut-off events. [2024-06-27 22:50:13,580 INFO L125 PetriNetUnfolderBase]: For 230150/230162 co-relation queries the response was YES. [2024-06-27 22:50:13,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85117 conditions, 13812 events. 8853/13812 cut-off events. For 230150/230162 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 92986 event pairs, 2827 based on Foata normal form. 9/13817 useless extension candidates. Maximal degree in co-relation 85000. Up to 12626 conditions per place. [2024-06-27 22:50:13,770 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 327 selfloop transitions, 51 changer transitions 0/385 dead transitions. [2024-06-27 22:50:13,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 385 transitions, 5797 flow [2024-06-27 22:50:13,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:50:13,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:50:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 224 transitions. [2024-06-27 22:50:13,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2024-06-27 22:50:13,772 INFO L175 Difference]: Start difference. First operand has 249 places, 324 transitions, 4554 flow. Second operand 10 states and 224 transitions. [2024-06-27 22:50:13,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 385 transitions, 5797 flow [2024-06-27 22:50:14,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 385 transitions, 5586 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-27 22:50:14,499 INFO L231 Difference]: Finished difference. Result has 256 places, 331 transitions, 4614 flow [2024-06-27 22:50:14,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4382, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4614, PETRI_PLACES=256, PETRI_TRANSITIONS=331} [2024-06-27 22:50:14,500 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 205 predicate places. [2024-06-27 22:50:14,500 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 331 transitions, 4614 flow [2024-06-27 22:50:14,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:14,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:14,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:14,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:50:14,500 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:14,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:14,501 INFO L85 PathProgramCache]: Analyzing trace with hash 692479658, now seen corresponding path program 3 times [2024-06-27 22:50:14,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:14,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402900124] [2024-06-27 22:50:14,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:14,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:18,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:18,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402900124] [2024-06-27 22:50:18,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402900124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:18,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:18,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:50:18,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473297826] [2024-06-27 22:50:18,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:18,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:50:18,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:18,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:50:18,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:50:18,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:18,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 331 transitions, 4614 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:18,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:18,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:18,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:22,169 INFO L124 PetriNetUnfolderBase]: 8984/13958 cut-off events. [2024-06-27 22:50:22,169 INFO L125 PetriNetUnfolderBase]: For 227724/227732 co-relation queries the response was YES. [2024-06-27 22:50:22,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85510 conditions, 13958 events. 8984/13958 cut-off events. For 227724/227732 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 93768 event pairs, 2772 based on Foata normal form. 11/13967 useless extension candidates. Maximal degree in co-relation 85391. Up to 12291 conditions per place. [2024-06-27 22:50:22,353 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 348 selfloop transitions, 107 changer transitions 0/462 dead transitions. [2024-06-27 22:50:22,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 462 transitions, 6709 flow [2024-06-27 22:50:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:50:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:50:22,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 309 transitions. [2024-06-27 22:50:22,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2024-06-27 22:50:22,355 INFO L175 Difference]: Start difference. First operand has 256 places, 331 transitions, 4614 flow. Second operand 12 states and 309 transitions. [2024-06-27 22:50:22,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 462 transitions, 6709 flow [2024-06-27 22:50:23,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 462 transitions, 6596 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 22:50:23,108 INFO L231 Difference]: Finished difference. Result has 266 places, 359 transitions, 5208 flow [2024-06-27 22:50:23,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4501, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5208, PETRI_PLACES=266, PETRI_TRANSITIONS=359} [2024-06-27 22:50:23,108 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 215 predicate places. [2024-06-27 22:50:23,109 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 359 transitions, 5208 flow [2024-06-27 22:50:23,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:23,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:23,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:23,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:50:23,109 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:23,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:23,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1787483734, now seen corresponding path program 4 times [2024-06-27 22:50:23,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:23,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42891502] [2024-06-27 22:50:23,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:23,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:27,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:27,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42891502] [2024-06-27 22:50:27,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42891502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:27,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:27,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:50:27,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781538040] [2024-06-27 22:50:27,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:27,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:50:27,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:27,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:50:27,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:50:27,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:27,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 359 transitions, 5208 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:27,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:27,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:27,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:31,257 INFO L124 PetriNetUnfolderBase]: 9123/14190 cut-off events. [2024-06-27 22:50:31,258 INFO L125 PetriNetUnfolderBase]: For 265425/265457 co-relation queries the response was YES. [2024-06-27 22:50:31,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90843 conditions, 14190 events. 9123/14190 cut-off events. For 265425/265457 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 95473 event pairs, 2777 based on Foata normal form. 26/14213 useless extension candidates. Maximal degree in co-relation 90719. Up to 12402 conditions per place. [2024-06-27 22:50:31,703 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 351 selfloop transitions, 114 changer transitions 0/472 dead transitions. [2024-06-27 22:50:31,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 472 transitions, 7360 flow [2024-06-27 22:50:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:50:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:50:31,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 300 transitions. [2024-06-27 22:50:31,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:50:31,722 INFO L175 Difference]: Start difference. First operand has 266 places, 359 transitions, 5208 flow. Second operand 12 states and 300 transitions. [2024-06-27 22:50:31,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 472 transitions, 7360 flow [2024-06-27 22:50:32,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 472 transitions, 7061 flow, removed 111 selfloop flow, removed 5 redundant places. [2024-06-27 22:50:32,293 INFO L231 Difference]: Finished difference. Result has 275 places, 376 transitions, 5513 flow [2024-06-27 22:50:32,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4929, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5513, PETRI_PLACES=275, PETRI_TRANSITIONS=376} [2024-06-27 22:50:32,294 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 224 predicate places. [2024-06-27 22:50:32,294 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 376 transitions, 5513 flow [2024-06-27 22:50:32,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:32,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:32,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:32,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:50:32,295 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:32,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:32,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1494600878, now seen corresponding path program 5 times [2024-06-27 22:50:32,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:32,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945426873] [2024-06-27 22:50:32,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:32,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:36,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:36,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945426873] [2024-06-27 22:50:36,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945426873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:36,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:36,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:50:36,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563090315] [2024-06-27 22:50:36,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:36,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:50:36,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:36,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:50:36,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:50:37,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:37,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 376 transitions, 5513 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:37,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:37,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:37,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:41,550 INFO L124 PetriNetUnfolderBase]: 9115/14195 cut-off events. [2024-06-27 22:50:41,550 INFO L125 PetriNetUnfolderBase]: For 292445/292489 co-relation queries the response was YES. [2024-06-27 22:50:41,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92245 conditions, 14195 events. 9115/14195 cut-off events. For 292445/292489 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 95431 event pairs, 2839 based on Foata normal form. 26/14214 useless extension candidates. Maximal degree in co-relation 92120. Up to 12979 conditions per place. [2024-06-27 22:50:41,712 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 372 selfloop transitions, 50 changer transitions 0/429 dead transitions. [2024-06-27 22:50:41,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 429 transitions, 6829 flow [2024-06-27 22:50:41,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:50:41,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:50:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2024-06-27 22:50:41,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-27 22:50:41,714 INFO L175 Difference]: Start difference. First operand has 275 places, 376 transitions, 5513 flow. Second operand 10 states and 220 transitions. [2024-06-27 22:50:41,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 429 transitions, 6829 flow [2024-06-27 22:50:42,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 429 transitions, 6462 flow, removed 124 selfloop flow, removed 4 redundant places. [2024-06-27 22:50:42,358 INFO L231 Difference]: Finished difference. Result has 281 places, 378 transitions, 5325 flow [2024-06-27 22:50:42,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5204, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5325, PETRI_PLACES=281, PETRI_TRANSITIONS=378} [2024-06-27 22:50:42,359 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 230 predicate places. [2024-06-27 22:50:42,359 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 378 transitions, 5325 flow [2024-06-27 22:50:42,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:42,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:42,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:42,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:50:42,360 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:42,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:42,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1717203818, now seen corresponding path program 6 times [2024-06-27 22:50:42,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:42,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284536152] [2024-06-27 22:50:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:42,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:46,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:46,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:46,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284536152] [2024-06-27 22:50:46,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284536152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:46,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:46,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:50:46,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092571068] [2024-06-27 22:50:46,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:46,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:50:46,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:46,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:50:46,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:50:46,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:46,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 378 transitions, 5325 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:46,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:46,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:46,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:51,040 INFO L124 PetriNetUnfolderBase]: 9234/14337 cut-off events. [2024-06-27 22:50:51,040 INFO L125 PetriNetUnfolderBase]: For 298348/298380 co-relation queries the response was YES. [2024-06-27 22:50:51,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92378 conditions, 14337 events. 9234/14337 cut-off events. For 298348/298380 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 96352 event pairs, 2784 based on Foata normal form. 26/14360 useless extension candidates. Maximal degree in co-relation 92252. Up to 12501 conditions per place. [2024-06-27 22:50:51,187 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 335 selfloop transitions, 148 changer transitions 0/490 dead transitions. [2024-06-27 22:50:51,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 490 transitions, 7523 flow [2024-06-27 22:50:51,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:50:51,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:50:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 300 transitions. [2024-06-27 22:50:51,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:50:51,189 INFO L175 Difference]: Start difference. First operand has 281 places, 378 transitions, 5325 flow. Second operand 12 states and 300 transitions. [2024-06-27 22:50:51,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 490 transitions, 7523 flow [2024-06-27 22:50:51,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 490 transitions, 7403 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 22:50:51,769 INFO L231 Difference]: Finished difference. Result has 290 places, 402 transitions, 6114 flow [2024-06-27 22:50:51,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5205, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6114, PETRI_PLACES=290, PETRI_TRANSITIONS=402} [2024-06-27 22:50:51,770 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 239 predicate places. [2024-06-27 22:50:51,770 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 402 transitions, 6114 flow [2024-06-27 22:50:51,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:51,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:51,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:51,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:50:51,771 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:51,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:51,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1870844500, now seen corresponding path program 1 times [2024-06-27 22:50:51,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:51,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863983698] [2024-06-27 22:50:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:51,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:56,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:56,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863983698] [2024-06-27 22:50:56,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863983698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:56,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:56,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:50:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050452502] [2024-06-27 22:50:56,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:56,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:50:56,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:56,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:50:56,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:50:56,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:50:56,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 402 transitions, 6114 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:56,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:56,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:50:56,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:00,239 INFO L124 PetriNetUnfolderBase]: 9256/14369 cut-off events. [2024-06-27 22:51:00,239 INFO L125 PetriNetUnfolderBase]: For 347441/347473 co-relation queries the response was YES. [2024-06-27 22:51:00,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96311 conditions, 14369 events. 9256/14369 cut-off events. For 347441/347473 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 96658 event pairs, 2789 based on Foata normal form. 26/14392 useless extension candidates. Maximal degree in co-relation 96181. Up to 12523 conditions per place. [2024-06-27 22:51:00,462 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 351 selfloop transitions, 130 changer transitions 0/488 dead transitions. [2024-06-27 22:51:00,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 488 transitions, 7875 flow [2024-06-27 22:51:00,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:51:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:51:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 283 transitions. [2024-06-27 22:51:00,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50177304964539 [2024-06-27 22:51:00,464 INFO L175 Difference]: Start difference. First operand has 290 places, 402 transitions, 6114 flow. Second operand 12 states and 283 transitions. [2024-06-27 22:51:00,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 488 transitions, 7875 flow [2024-06-27 22:51:01,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 488 transitions, 7458 flow, removed 147 selfloop flow, removed 5 redundant places. [2024-06-27 22:51:01,565 INFO L231 Difference]: Finished difference. Result has 297 places, 404 transitions, 5934 flow [2024-06-27 22:51:01,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5614, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5934, PETRI_PLACES=297, PETRI_TRANSITIONS=404} [2024-06-27 22:51:01,566 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 246 predicate places. [2024-06-27 22:51:01,566 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 404 transitions, 5934 flow [2024-06-27 22:51:01,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:01,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:01,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:01,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:51:01,567 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:01,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:01,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1717212746, now seen corresponding path program 1 times [2024-06-27 22:51:01,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:01,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824404923] [2024-06-27 22:51:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:01,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:07,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:07,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824404923] [2024-06-27 22:51:07,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824404923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:07,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:07,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:51:07,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464744671] [2024-06-27 22:51:07,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:07,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:51:07,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:07,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:51:07,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:51:07,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:51:07,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 404 transitions, 5934 flow. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:07,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:07,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:51:07,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:10,816 INFO L124 PetriNetUnfolderBase]: 9021/13985 cut-off events. [2024-06-27 22:51:10,816 INFO L125 PetriNetUnfolderBase]: For 341155/341215 co-relation queries the response was YES. [2024-06-27 22:51:10,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93367 conditions, 13985 events. 9021/13985 cut-off events. For 341155/341215 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 94528 event pairs, 1937 based on Foata normal form. 72/13994 useless extension candidates. Maximal degree in co-relation 93237. Up to 12136 conditions per place. [2024-06-27 22:51:11,019 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 368 selfloop transitions, 60 changer transitions 0/482 dead transitions. [2024-06-27 22:51:11,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 482 transitions, 7476 flow [2024-06-27 22:51:11,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:51:11,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:51:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-06-27 22:51:11,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145067698259188 [2024-06-27 22:51:11,021 INFO L175 Difference]: Start difference. First operand has 297 places, 404 transitions, 5934 flow. Second operand 11 states and 266 transitions. [2024-06-27 22:51:11,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 482 transitions, 7476 flow [2024-06-27 22:51:11,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 482 transitions, 7244 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 22:51:11,754 INFO L231 Difference]: Finished difference. Result has 301 places, 405 transitions, 5897 flow [2024-06-27 22:51:11,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5750, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5897, PETRI_PLACES=301, PETRI_TRANSITIONS=405} [2024-06-27 22:51:11,755 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 250 predicate places. [2024-06-27 22:51:11,755 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 405 transitions, 5897 flow [2024-06-27 22:51:11,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:11,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:11,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:11,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:51:11,756 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:11,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:11,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1731497546, now seen corresponding path program 2 times [2024-06-27 22:51:11,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:11,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534627521] [2024-06-27 22:51:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:11,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:16,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:16,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534627521] [2024-06-27 22:51:16,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534627521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:16,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:16,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:51:16,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632313978] [2024-06-27 22:51:16,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:16,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:51:16,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:16,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:51:16,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:51:16,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:51:16,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 405 transitions, 5897 flow. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:16,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:16,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:51:16,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:20,772 INFO L124 PetriNetUnfolderBase]: 9559/14835 cut-off events. [2024-06-27 22:51:20,772 INFO L125 PetriNetUnfolderBase]: For 324922/324982 co-relation queries the response was YES. [2024-06-27 22:51:20,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96717 conditions, 14835 events. 9559/14835 cut-off events. For 324922/324982 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 100927 event pairs, 1927 based on Foata normal form. 68/14842 useless extension candidates. Maximal degree in co-relation 96587. Up to 12370 conditions per place. [2024-06-27 22:51:21,060 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 367 selfloop transitions, 75 changer transitions 0/496 dead transitions. [2024-06-27 22:51:21,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 496 transitions, 7490 flow [2024-06-27 22:51:21,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:51:21,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:51:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 290 transitions. [2024-06-27 22:51:21,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-27 22:51:21,062 INFO L175 Difference]: Start difference. First operand has 301 places, 405 transitions, 5897 flow. Second operand 12 states and 290 transitions. [2024-06-27 22:51:21,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 496 transitions, 7490 flow [2024-06-27 22:51:21,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 496 transitions, 7358 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 22:51:21,827 INFO L231 Difference]: Finished difference. Result has 306 places, 413 transitions, 6121 flow [2024-06-27 22:51:21,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5774, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6121, PETRI_PLACES=306, PETRI_TRANSITIONS=413} [2024-06-27 22:51:21,828 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 255 predicate places. [2024-06-27 22:51:21,828 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 413 transitions, 6121 flow [2024-06-27 22:51:21,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:21,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:21,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:21,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:51:21,834 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:21,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:21,834 INFO L85 PathProgramCache]: Analyzing trace with hash 574161710, now seen corresponding path program 1 times [2024-06-27 22:51:21,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:21,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097461646] [2024-06-27 22:51:21,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:21,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:25,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:25,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097461646] [2024-06-27 22:51:25,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097461646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:25,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:25,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:25,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870073554] [2024-06-27 22:51:25,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:25,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:25,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:25,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:25,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:25,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:25,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 413 transitions, 6121 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:25,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:25,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:25,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:29,813 INFO L124 PetriNetUnfolderBase]: 10020/15614 cut-off events. [2024-06-27 22:51:29,814 INFO L125 PetriNetUnfolderBase]: For 349735/349747 co-relation queries the response was YES. [2024-06-27 22:51:29,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101950 conditions, 15614 events. 10020/15614 cut-off events. For 349735/349747 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 106590 event pairs, 2839 based on Foata normal form. 12/15622 useless extension candidates. Maximal degree in co-relation 101819. Up to 13613 conditions per place. [2024-06-27 22:51:30,055 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 399 selfloop transitions, 74 changer transitions 0/480 dead transitions. [2024-06-27 22:51:30,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 480 transitions, 7618 flow [2024-06-27 22:51:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:51:30,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:51:30,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 22:51:30,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-27 22:51:30,057 INFO L175 Difference]: Start difference. First operand has 306 places, 413 transitions, 6121 flow. Second operand 9 states and 214 transitions. [2024-06-27 22:51:30,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 480 transitions, 7618 flow [2024-06-27 22:51:30,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 480 transitions, 7452 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 22:51:30,964 INFO L231 Difference]: Finished difference. Result has 309 places, 417 transitions, 6177 flow [2024-06-27 22:51:30,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5955, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6177, PETRI_PLACES=309, PETRI_TRANSITIONS=417} [2024-06-27 22:51:30,965 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 258 predicate places. [2024-06-27 22:51:30,965 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 417 transitions, 6177 flow [2024-06-27 22:51:30,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:30,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:30,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:30,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:51:30,966 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:30,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:30,966 INFO L85 PathProgramCache]: Analyzing trace with hash 577018670, now seen corresponding path program 2 times [2024-06-27 22:51:30,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:30,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198598998] [2024-06-27 22:51:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:30,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:34,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:34,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198598998] [2024-06-27 22:51:34,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198598998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:34,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:34,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:34,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36017066] [2024-06-27 22:51:34,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:34,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:34,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:34,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:34,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:34,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:34,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 417 transitions, 6177 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:34,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:34,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:34,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:39,658 INFO L124 PetriNetUnfolderBase]: 10096/15717 cut-off events. [2024-06-27 22:51:39,658 INFO L125 PetriNetUnfolderBase]: For 344331/344343 co-relation queries the response was YES. [2024-06-27 22:51:39,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101241 conditions, 15717 events. 10096/15717 cut-off events. For 344331/344343 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 107257 event pairs, 3043 based on Foata normal form. 12/15725 useless extension candidates. Maximal degree in co-relation 101109. Up to 14139 conditions per place. [2024-06-27 22:51:39,861 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 402 selfloop transitions, 65 changer transitions 0/474 dead transitions. [2024-06-27 22:51:39,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 474 transitions, 7510 flow [2024-06-27 22:51:39,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:51:39,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:51:39,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-27 22:51:39,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491725768321513 [2024-06-27 22:51:39,863 INFO L175 Difference]: Start difference. First operand has 309 places, 417 transitions, 6177 flow. Second operand 9 states and 208 transitions. [2024-06-27 22:51:39,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 474 transitions, 7510 flow [2024-06-27 22:51:41,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 474 transitions, 7409 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 22:51:41,148 INFO L231 Difference]: Finished difference. Result has 314 places, 419 transitions, 6250 flow [2024-06-27 22:51:41,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6086, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6250, PETRI_PLACES=314, PETRI_TRANSITIONS=419} [2024-06-27 22:51:41,149 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 263 predicate places. [2024-06-27 22:51:41,149 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 419 transitions, 6250 flow [2024-06-27 22:51:41,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:41,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:41,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:41,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:51:41,150 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:41,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:41,150 INFO L85 PathProgramCache]: Analyzing trace with hash 577023630, now seen corresponding path program 1 times [2024-06-27 22:51:41,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:41,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503941406] [2024-06-27 22:51:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:41,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:45,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:45,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503941406] [2024-06-27 22:51:45,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503941406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:45,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:45,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:45,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272628428] [2024-06-27 22:51:45,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:45,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:45,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:45,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:45,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 419 transitions, 6250 flow. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:45,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:45,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:45,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:50,015 INFO L124 PetriNetUnfolderBase]: 10093/15865 cut-off events. [2024-06-27 22:51:50,016 INFO L125 PetriNetUnfolderBase]: For 359296/359296 co-relation queries the response was YES. [2024-06-27 22:51:50,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101464 conditions, 15865 events. 10093/15865 cut-off events. For 359296/359296 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 110694 event pairs, 4575 based on Foata normal form. 1/15864 useless extension candidates. Maximal degree in co-relation 101330. Up to 14185 conditions per place. [2024-06-27 22:51:50,455 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 401 selfloop transitions, 67 changer transitions 0/475 dead transitions. [2024-06-27 22:51:50,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 475 transitions, 7755 flow [2024-06-27 22:51:50,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:51:50,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:51:50,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 22:51:50,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-27 22:51:50,457 INFO L175 Difference]: Start difference. First operand has 314 places, 419 transitions, 6250 flow. Second operand 8 states and 199 transitions. [2024-06-27 22:51:50,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 475 transitions, 7755 flow [2024-06-27 22:51:51,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 475 transitions, 7567 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 22:51:51,189 INFO L231 Difference]: Finished difference. Result has 314 places, 420 transitions, 6217 flow [2024-06-27 22:51:51,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6066, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6217, PETRI_PLACES=314, PETRI_TRANSITIONS=420} [2024-06-27 22:51:51,189 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 263 predicate places. [2024-06-27 22:51:51,189 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 420 transitions, 6217 flow [2024-06-27 22:51:51,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:51,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:51,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:51,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:51:51,190 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:51,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:51,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1224819406, now seen corresponding path program 3 times [2024-06-27 22:51:51,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:51,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040393576] [2024-06-27 22:51:51,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:51,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:55,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:55,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040393576] [2024-06-27 22:51:55,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040393576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:55,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:55,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:51:55,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865768921] [2024-06-27 22:51:55,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:55,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:51:55,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:55,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:51:55,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:51:55,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:51:55,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 420 transitions, 6217 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:55,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:55,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:51:55,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:59,993 INFO L124 PetriNetUnfolderBase]: 10169/15815 cut-off events. [2024-06-27 22:51:59,993 INFO L125 PetriNetUnfolderBase]: For 350587/350599 co-relation queries the response was YES. [2024-06-27 22:52:00,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101862 conditions, 15815 events. 10169/15815 cut-off events. For 350587/350599 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 107962 event pairs, 3032 based on Foata normal form. 12/15823 useless extension candidates. Maximal degree in co-relation 101727. Up to 14416 conditions per place. [2024-06-27 22:52:00,227 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 414 selfloop transitions, 50 changer transitions 0/471 dead transitions. [2024-06-27 22:52:00,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 471 transitions, 7505 flow [2024-06-27 22:52:00,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:52:00,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:52:00,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 22:52:00,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799054373522459 [2024-06-27 22:52:00,231 INFO L175 Difference]: Start difference. First operand has 314 places, 420 transitions, 6217 flow. Second operand 9 states and 203 transitions. [2024-06-27 22:52:00,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 471 transitions, 7505 flow [2024-06-27 22:52:01,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 471 transitions, 7381 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 22:52:01,143 INFO L231 Difference]: Finished difference. Result has 318 places, 422 transitions, 6233 flow [2024-06-27 22:52:01,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6095, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6233, PETRI_PLACES=318, PETRI_TRANSITIONS=422} [2024-06-27 22:52:01,144 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 267 predicate places. [2024-06-27 22:52:01,144 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 422 transitions, 6233 flow [2024-06-27 22:52:01,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:01,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:01,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:01,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:52:01,145 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:52:01,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:01,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1224634956, now seen corresponding path program 2 times [2024-06-27 22:52:01,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:01,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355584285] [2024-06-27 22:52:01,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:01,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:05,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:05,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355584285] [2024-06-27 22:52:05,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355584285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:05,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:05,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:52:05,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688568873] [2024-06-27 22:52:05,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:05,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:52:05,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:05,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:52:05,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:52:05,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:52:05,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 422 transitions, 6233 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:05,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:05,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:52:05,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:11,025 INFO L124 PetriNetUnfolderBase]: 10200/16030 cut-off events. [2024-06-27 22:52:11,025 INFO L125 PetriNetUnfolderBase]: For 368013/368013 co-relation queries the response was YES. [2024-06-27 22:52:11,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102401 conditions, 16030 events. 10200/16030 cut-off events. For 368013/368013 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 111969 event pairs, 4601 based on Foata normal form. 1/16029 useless extension candidates. Maximal degree in co-relation 102264. Up to 14515 conditions per place. [2024-06-27 22:52:11,238 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 432 selfloop transitions, 53 changer transitions 0/492 dead transitions. [2024-06-27 22:52:11,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 492 transitions, 7951 flow [2024-06-27 22:52:11,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:52:11,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:52:11,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 247 transitions. [2024-06-27 22:52:11,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47775628626692457 [2024-06-27 22:52:11,239 INFO L175 Difference]: Start difference. First operand has 318 places, 422 transitions, 6233 flow. Second operand 11 states and 247 transitions. [2024-06-27 22:52:11,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 492 transitions, 7951 flow [2024-06-27 22:52:12,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 492 transitions, 7841 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 22:52:12,161 INFO L231 Difference]: Finished difference. Result has 322 places, 426 transitions, 6288 flow [2024-06-27 22:52:12,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6123, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6288, PETRI_PLACES=322, PETRI_TRANSITIONS=426} [2024-06-27 22:52:12,162 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 271 predicate places. [2024-06-27 22:52:12,162 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 426 transitions, 6288 flow [2024-06-27 22:52:12,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:12,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:12,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:12,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:52:12,170 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:52:12,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:12,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1224814446, now seen corresponding path program 3 times [2024-06-27 22:52:12,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:12,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920455861] [2024-06-27 22:52:12,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:12,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:16,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:16,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920455861] [2024-06-27 22:52:16,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920455861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:16,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:16,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:16,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050174997] [2024-06-27 22:52:16,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:16,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:16,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:16,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:16,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:16,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:52:16,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 426 transitions, 6288 flow. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:16,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:16,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:52:16,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:20,870 INFO L124 PetriNetUnfolderBase]: 10197/16034 cut-off events. [2024-06-27 22:52:20,871 INFO L125 PetriNetUnfolderBase]: For 371541/371541 co-relation queries the response was YES. [2024-06-27 22:52:20,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102339 conditions, 16034 events. 10197/16034 cut-off events. For 371541/371541 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 112248 event pairs, 4598 based on Foata normal form. 1/16033 useless extension candidates. Maximal degree in co-relation 102201. Up to 14512 conditions per place. [2024-06-27 22:52:21,067 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 418 selfloop transitions, 52 changer transitions 0/477 dead transitions. [2024-06-27 22:52:21,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 477 transitions, 7716 flow [2024-06-27 22:52:21,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:52:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:52:21,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-27 22:52:21,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48699763593380613 [2024-06-27 22:52:21,069 INFO L175 Difference]: Start difference. First operand has 322 places, 426 transitions, 6288 flow. Second operand 9 states and 206 transitions. [2024-06-27 22:52:21,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 477 transitions, 7716 flow [2024-06-27 22:52:22,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 477 transitions, 7580 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 22:52:22,080 INFO L231 Difference]: Finished difference. Result has 323 places, 426 transitions, 6264 flow [2024-06-27 22:52:22,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6152, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6264, PETRI_PLACES=323, PETRI_TRANSITIONS=426} [2024-06-27 22:52:22,081 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 272 predicate places. [2024-06-27 22:52:22,081 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 426 transitions, 6264 flow [2024-06-27 22:52:22,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:22,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:22,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:22,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:52:22,086 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:52:22,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:22,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1085547088, now seen corresponding path program 4 times [2024-06-27 22:52:22,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:22,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213303361] [2024-06-27 22:52:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:22,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat