./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe018_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe018_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe018_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:04:27,545 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:04:27,632 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:04:27,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:04:27,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:04:27,678 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:04:27,679 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:04:27,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:04:27,680 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:04:27,684 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:04:27,684 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:04:27,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:04:27,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:04:27,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:04:27,687 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:04:27,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:04:27,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:04:27,687 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:04:27,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:04:27,688 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:04:27,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:04:27,689 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:04:27,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:04:27,689 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:04:27,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:04:27,690 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:04:27,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:04:27,690 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:04:27,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:04:27,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:04:27,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:04:27,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:04:27,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:04:27,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:04:27,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:04:27,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:04:27,693 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:04:27,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:04:27,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:04:27,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:04:27,695 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:04:27,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:04:27,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:04:27,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 02:04:27,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:04:27,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:04:27,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:04:27,925 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:04:27,925 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:04:27,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe018_rmo.opt.yml/witness.yml [2024-06-28 02:04:28,174 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:04:28,175 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:04:28,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_rmo.opt.i [2024-06-28 02:04:29,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:04:29,598 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:04:29,599 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_rmo.opt.i [2024-06-28 02:04:29,626 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0e44671e/aa765a271cbe4e10bb7e4546ead5744b/FLAG78c055ea4 [2024-06-28 02:04:29,638 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0e44671e/aa765a271cbe4e10bb7e4546ead5744b [2024-06-28 02:04:29,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:04:29,640 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:04:29,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:04:29,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:04:29,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:04:29,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:04:28" (1/2) ... [2024-06-28 02:04:29,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@399f6a82 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:04:29, skipping insertion in model container [2024-06-28 02:04:29,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:04:28" (1/2) ... [2024-06-28 02:04:29,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29365f9a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:04:29, skipping insertion in model container [2024-06-28 02:04:29,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:04:29" (2/2) ... [2024-06-28 02:04:29,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@399f6a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:29, skipping insertion in model container [2024-06-28 02:04:29,650 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:04:29" (2/2) ... [2024-06-28 02:04:29,650 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:04:29,803 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:04:29,804 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (y == 0 || y == 1)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 02:04:29,804 INFO L97 edCorrectnessWitness]: Location invariant before [L852-L852] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (y == 0 || y == 1)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 02:04:29,805 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$flush_delayed == (_Bool)0) && __unbuffered_p2_EAX$mem_tmp == 0) && __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (y == 0 || y == 1)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0) [2024-06-28 02:04:29,805 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:04:29,805 INFO L106 edCorrectnessWitness]: ghost_update [L850-L850] multithreaded = 1; [2024-06-28 02:04:29,854 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:04:30,021 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/safe018_rmo.opt.i[992,1005] [2024-06-28 02:04:30,299 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:04:30,314 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 02:04:30,362 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/safe018_rmo.opt.i[992,1005] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:04:30,459 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:04:30,510 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:04:30,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:30 WrapperNode [2024-06-28 02:04:30,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:04:30,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:04:30,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:04:30,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:04:30,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:30" (1/1) ... [2024-06-28 02:04:30,555 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:30" (1/1) ... [2024-06-28 02:04:30,603 INFO L138 Inliner]: procedures = 175, calls = 85, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 206 [2024-06-28 02:04:30,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:04:30,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:04:30,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:04:30,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:04:30,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:30" (1/1) ... [2024-06-28 02:04:30,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:30" (1/1) ... [2024-06-28 02:04:30,633 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:30" (1/1) ... [2024-06-28 02:04:30,671 INFO L175 MemorySlicer]: Split 47 memory accesses to 2 slices as follows [2, 45]. 96 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 8 writes are split as follows [0, 8]. [2024-06-28 02:04:30,672 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:30" (1/1) ... [2024-06-28 02:04:30,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:30" (1/1) ... [2024-06-28 02:04:30,688 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:30" (1/1) ... [2024-06-28 02:04:30,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:30" (1/1) ... [2024-06-28 02:04:30,713 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:30" (1/1) ... [2024-06-28 02:04:30,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:30" (1/1) ... [2024-06-28 02:04:30,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:04:30,730 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:04:30,730 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:04:30,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:04:30,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:30" (1/1) ... [2024-06-28 02:04:30,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:04:30,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:04:30,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:04:30,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:04:30,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 02:04:30,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 02:04:30,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 02:04:30,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 02:04:30,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:04:30,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:04:30,812 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:04:30,812 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:04:30,812 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:04:30,813 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:04:30,813 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:04:30,813 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:04:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:04:30,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 02:04:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:04:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:04:30,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:04:30,816 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:04:30,992 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:04:30,994 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:04:31,458 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:04:31,458 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:04:31,967 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:04:31,967 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:04:31,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:04:31 BoogieIcfgContainer [2024-06-28 02:04:31,968 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:04:31,970 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:04:31,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:04:31,978 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:04:31,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:04:28" (1/4) ... [2024-06-28 02:04:31,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a70b55 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:04:31, skipping insertion in model container [2024-06-28 02:04:31,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:04:29" (2/4) ... [2024-06-28 02:04:31,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a70b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:04:31, skipping insertion in model container [2024-06-28 02:04:31,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:04:30" (3/4) ... [2024-06-28 02:04:31,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a70b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:04:31, skipping insertion in model container [2024-06-28 02:04:31,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:04:31" (4/4) ... [2024-06-28 02:04:31,982 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_rmo.opt.i [2024-06-28 02:04:32,001 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:04:32,001 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 02:04:32,002 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:04:32,067 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:04:32,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 02:04:32,141 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-28 02:04:32,141 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:04:32,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-28 02:04:32,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 02:04:32,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 40 transitions, 89 flow [2024-06-28 02:04:32,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:04:32,174 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;@4012e68d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:04:32,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 02:04:32,181 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:04:32,181 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 02:04:32,181 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:04:32,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:32,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:04:32,183 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)] === [2024-06-28 02:04:32,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:32,187 INFO L85 PathProgramCache]: Analyzing trace with hash 747214004, now seen corresponding path program 1 times [2024-06-28 02:04:32,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:32,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215273107] [2024-06-28 02:04:32,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:32,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:34,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:34,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:34,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215273107] [2024-06-28 02:04:34,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215273107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:34,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:34,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:04:34,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749310898] [2024-06-28 02:04:34,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:34,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:04:34,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:34,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:04:34,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:04:34,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 02:04:34,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:34,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:34,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 02:04:34,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:35,556 INFO L124 PetriNetUnfolderBase]: 2613/4056 cut-off events. [2024-06-28 02:04:35,556 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-06-28 02:04:35,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7919 conditions, 4056 events. 2613/4056 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23027 event pairs, 1279 based on Foata normal form. 0/3914 useless extension candidates. Maximal degree in co-relation 7907. Up to 3767 conditions per place. [2024-06-28 02:04:35,589 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 45 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 02:04:35,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 231 flow [2024-06-28 02:04:35,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:04:35,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:04:35,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-06-28 02:04:35,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.644927536231884 [2024-06-28 02:04:35,604 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 89 flow. Second operand 3 states and 89 transitions. [2024-06-28 02:04:35,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 231 flow [2024-06-28 02:04:35,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:04:35,614 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 123 flow [2024-06-28 02:04:35,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-06-28 02:04:35,619 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2024-06-28 02:04:35,620 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 123 flow [2024-06-28 02:04:35,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:35,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:35,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:35,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:04:35,621 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)] === [2024-06-28 02:04:35,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:35,622 INFO L85 PathProgramCache]: Analyzing trace with hash 120069155, now seen corresponding path program 1 times [2024-06-28 02:04:35,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:35,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795142360] [2024-06-28 02:04:35,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:35,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:39,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:39,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795142360] [2024-06-28 02:04:39,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795142360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:39,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:39,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:04:39,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076465115] [2024-06-28 02:04:39,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:39,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:04:39,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:39,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:04:39,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:04:39,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:39,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:39,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:39,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:39,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:40,294 INFO L124 PetriNetUnfolderBase]: 3329/5126 cut-off events. [2024-06-28 02:04:40,295 INFO L125 PetriNetUnfolderBase]: For 812/812 co-relation queries the response was YES. [2024-06-28 02:04:40,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11190 conditions, 5126 events. 3329/5126 cut-off events. For 812/812 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 28596 event pairs, 1115 based on Foata normal form. 6/5128 useless extension candidates. Maximal degree in co-relation 11178. Up to 4693 conditions per place. [2024-06-28 02:04:40,323 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 56 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2024-06-28 02:04:40,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 315 flow [2024-06-28 02:04:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:04:40,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:04:40,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-06-28 02:04:40,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6032608695652174 [2024-06-28 02:04:40,328 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 123 flow. Second operand 4 states and 111 transitions. [2024-06-28 02:04:40,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 315 flow [2024-06-28 02:04:40,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:04:40,332 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 156 flow [2024-06-28 02:04:40,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-28 02:04:40,335 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2024-06-28 02:04:40,336 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 156 flow [2024-06-28 02:04:40,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:40,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:40,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:40,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:04:40,342 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:40,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:40,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1538847233, now seen corresponding path program 1 times [2024-06-28 02:04:40,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:40,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95470481] [2024-06-28 02:04:40,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:40,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:42,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:42,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:42,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95470481] [2024-06-28 02:04:42,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95470481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:42,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:42,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:04:42,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436354942] [2024-06-28 02:04:42,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:42,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:04:42,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:42,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:04:42,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:04:42,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:42,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:42,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:42,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:42,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:43,763 INFO L124 PetriNetUnfolderBase]: 2594/4038 cut-off events. [2024-06-28 02:04:43,764 INFO L125 PetriNetUnfolderBase]: For 1758/1758 co-relation queries the response was YES. [2024-06-28 02:04:43,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9520 conditions, 4038 events. 2594/4038 cut-off events. For 1758/1758 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 22912 event pairs, 1049 based on Foata normal form. 4/4040 useless extension candidates. Maximal degree in co-relation 9505. Up to 3727 conditions per place. [2024-06-28 02:04:43,790 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 60 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2024-06-28 02:04:43,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 384 flow [2024-06-28 02:04:43,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:04:43,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:04:43,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 02:04:43,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 02:04:43,796 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 156 flow. Second operand 5 states and 120 transitions. [2024-06-28 02:04:43,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 384 flow [2024-06-28 02:04:43,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 360 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 02:04:43,802 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 216 flow [2024-06-28 02:04:43,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-06-28 02:04:43,803 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2024-06-28 02:04:43,803 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 216 flow [2024-06-28 02:04:43,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:43,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:43,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:43,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:04:43,805 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)] === [2024-06-28 02:04:43,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1363488704, now seen corresponding path program 1 times [2024-06-28 02:04:43,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:43,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907385055] [2024-06-28 02:04:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:43,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:47,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:47,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907385055] [2024-06-28 02:04:47,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907385055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:47,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:47,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:47,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071784559] [2024-06-28 02:04:47,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:47,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:47,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:47,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:47,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:47,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:04:47,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 216 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:47,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:47,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:04:47,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:48,808 INFO L124 PetriNetUnfolderBase]: 2586/4026 cut-off events. [2024-06-28 02:04:48,808 INFO L125 PetriNetUnfolderBase]: For 2895/2895 co-relation queries the response was YES. [2024-06-28 02:04:48,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10405 conditions, 4026 events. 2586/4026 cut-off events. For 2895/2895 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 22880 event pairs, 1000 based on Foata normal form. 4/4028 useless extension candidates. Maximal degree in co-relation 10387. Up to 3677 conditions per place. [2024-06-28 02:04:48,838 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 70 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-28 02:04:48,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 90 transitions, 476 flow [2024-06-28 02:04:48,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:04:48,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:04:48,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 02:04:48,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 02:04:48,841 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 216 flow. Second operand 6 states and 144 transitions. [2024-06-28 02:04:48,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 90 transitions, 476 flow [2024-06-28 02:04:48,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 90 transitions, 466 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 02:04:48,846 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 266 flow [2024-06-28 02:04:48,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-06-28 02:04:48,848 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 11 predicate places. [2024-06-28 02:04:48,848 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 266 flow [2024-06-28 02:04:48,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:48,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:48,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:48,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:04:48,850 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)] === [2024-06-28 02:04:48,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:48,851 INFO L85 PathProgramCache]: Analyzing trace with hash -688201591, now seen corresponding path program 1 times [2024-06-28 02:04:48,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:48,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974187779] [2024-06-28 02:04:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:48,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:52,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:52,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974187779] [2024-06-28 02:04:52,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974187779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:52,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:52,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:52,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228722911] [2024-06-28 02:04:52,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:52,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:52,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:52,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:52,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:52,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:04:52,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 266 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:52,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:52,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:04:52,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:53,662 INFO L124 PetriNetUnfolderBase]: 3345/5166 cut-off events. [2024-06-28 02:04:53,663 INFO L125 PetriNetUnfolderBase]: For 5633/5633 co-relation queries the response was YES. [2024-06-28 02:04:53,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14019 conditions, 5166 events. 3345/5166 cut-off events. For 5633/5633 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 28864 event pairs, 1076 based on Foata normal form. 4/5166 useless extension candidates. Maximal degree in co-relation 13998. Up to 4633 conditions per place. [2024-06-28 02:04:53,691 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 63 selfloop transitions, 17 changer transitions 0/86 dead transitions. [2024-06-28 02:04:53,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 86 transitions, 510 flow [2024-06-28 02:04:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:04:53,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:04:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 02:04:53,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 02:04:53,698 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 266 flow. Second operand 5 states and 120 transitions. [2024-06-28 02:04:53,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 86 transitions, 510 flow [2024-06-28 02:04:53,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 474 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:53,707 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 314 flow [2024-06-28 02:04:53,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-06-28 02:04:53,707 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 12 predicate places. [2024-06-28 02:04:53,708 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 314 flow [2024-06-28 02:04:53,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:53,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:53,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:53,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:04:53,709 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)] === [2024-06-28 02:04:53,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:53,709 INFO L85 PathProgramCache]: Analyzing trace with hash 393468099, now seen corresponding path program 2 times [2024-06-28 02:04:53,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:53,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065439619] [2024-06-28 02:04:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:53,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:56,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:56,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065439619] [2024-06-28 02:04:56,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065439619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:56,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:56,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:56,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976888790] [2024-06-28 02:04:56,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:56,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:56,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:56,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:56,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:56,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:04:56,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 314 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:56,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:56,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:04:56,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:57,915 INFO L124 PetriNetUnfolderBase]: 3335/5152 cut-off events. [2024-06-28 02:04:57,915 INFO L125 PetriNetUnfolderBase]: For 8082/8082 co-relation queries the response was YES. [2024-06-28 02:04:57,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14965 conditions, 5152 events. 3335/5152 cut-off events. For 8082/8082 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 28788 event pairs, 1076 based on Foata normal form. 4/5152 useless extension candidates. Maximal degree in co-relation 14943. Up to 4571 conditions per place. [2024-06-28 02:04:57,942 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 73 selfloop transitions, 21 changer transitions 0/100 dead transitions. [2024-06-28 02:04:57,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 100 transitions, 616 flow [2024-06-28 02:04:57,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:04:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:04:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 02:04:57,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 02:04:57,945 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 314 flow. Second operand 6 states and 144 transitions. [2024-06-28 02:04:57,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 100 transitions, 616 flow [2024-06-28 02:04:57,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 100 transitions, 562 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 02:04:57,955 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 355 flow [2024-06-28 02:04:57,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=355, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-06-28 02:04:57,956 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 15 predicate places. [2024-06-28 02:04:57,957 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 355 flow [2024-06-28 02:04:57,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:57,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:57,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:57,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:04:57,958 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:04:57,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:57,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1908920911, now seen corresponding path program 1 times [2024-06-28 02:04:57,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:57,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590495314] [2024-06-28 02:04:57,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:57,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:01,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:01,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590495314] [2024-06-28 02:05:01,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590495314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:01,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:01,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:05:01,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370573746] [2024-06-28 02:05:01,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:01,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:05:01,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:01,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:05:01,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:05:01,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:05:01,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 355 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:01,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:01,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:05:01,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:02,100 INFO L124 PetriNetUnfolderBase]: 2622/4085 cut-off events. [2024-06-28 02:05:02,100 INFO L125 PetriNetUnfolderBase]: For 7627/7627 co-relation queries the response was YES. [2024-06-28 02:05:02,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12469 conditions, 4085 events. 2622/4085 cut-off events. For 7627/7627 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23187 event pairs, 1036 based on Foata normal form. 2/4083 useless extension candidates. Maximal degree in co-relation 12446. Up to 3732 conditions per place. [2024-06-28 02:05:02,128 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 74 selfloop transitions, 15 changer transitions 0/96 dead transitions. [2024-06-28 02:05:02,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 656 flow [2024-06-28 02:05:02,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:05:02,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:05:02,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 02:05:02,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746376811594203 [2024-06-28 02:05:02,131 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 355 flow. Second operand 6 states and 131 transitions. [2024-06-28 02:05:02,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 656 flow [2024-06-28 02:05:02,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 96 transitions, 595 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 02:05:02,141 INFO L231 Difference]: Finished difference. Result has 69 places, 73 transitions, 406 flow [2024-06-28 02:05:02,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=406, PETRI_PLACES=69, PETRI_TRANSITIONS=73} [2024-06-28 02:05:02,142 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 19 predicate places. [2024-06-28 02:05:02,142 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 73 transitions, 406 flow [2024-06-28 02:05:02,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:02,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:02,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:02,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:05:02,143 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)] === [2024-06-28 02:05:02,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:02,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1034263474, now seen corresponding path program 1 times [2024-06-28 02:05:02,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:02,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013076309] [2024-06-28 02:05:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:02,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:04,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:04,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013076309] [2024-06-28 02:05:04,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013076309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:04,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:04,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:04,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312687567] [2024-06-28 02:05:04,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:04,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:04,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:04,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:04,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:04,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:05:04,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 73 transitions, 406 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:04,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:04,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:05:04,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:06,115 INFO L124 PetriNetUnfolderBase]: 3700/5734 cut-off events. [2024-06-28 02:05:06,115 INFO L125 PetriNetUnfolderBase]: For 14067/14067 co-relation queries the response was YES. [2024-06-28 02:05:06,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18365 conditions, 5734 events. 3700/5734 cut-off events. For 14067/14067 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 32527 event pairs, 613 based on Foata normal form. 16/5746 useless extension candidates. Maximal degree in co-relation 18339. Up to 4543 conditions per place. [2024-06-28 02:05:06,149 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 97 selfloop transitions, 28 changer transitions 0/131 dead transitions. [2024-06-28 02:05:06,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 131 transitions, 864 flow [2024-06-28 02:05:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:06,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:06,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 02:05:06,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-06-28 02:05:06,151 INFO L175 Difference]: Start difference. First operand has 69 places, 73 transitions, 406 flow. Second operand 7 states and 176 transitions. [2024-06-28 02:05:06,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 131 transitions, 864 flow [2024-06-28 02:05:06,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 131 transitions, 850 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 02:05:06,165 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 511 flow [2024-06-28 02:05:06,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=511, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-06-28 02:05:06,168 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 25 predicate places. [2024-06-28 02:05:06,168 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 511 flow [2024-06-28 02:05:06,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:06,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:06,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:06,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:05:06,169 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)] === [2024-06-28 02:05:06,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:06,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1132644786, now seen corresponding path program 2 times [2024-06-28 02:05:06,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:06,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416636646] [2024-06-28 02:05:06,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:06,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:09,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:09,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416636646] [2024-06-28 02:05:09,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416636646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:09,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:09,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:09,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773610896] [2024-06-28 02:05:09,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:09,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:09,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:09,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:09,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:09,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:05:09,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 511 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:09,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:09,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:05:09,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:10,473 INFO L124 PetriNetUnfolderBase]: 3664/5678 cut-off events. [2024-06-28 02:05:10,474 INFO L125 PetriNetUnfolderBase]: For 16677/16677 co-relation queries the response was YES. [2024-06-28 02:05:10,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18866 conditions, 5678 events. 3664/5678 cut-off events. For 16677/16677 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 32137 event pairs, 912 based on Foata normal form. 20/5694 useless extension candidates. Maximal degree in co-relation 18837. Up to 4779 conditions per place. [2024-06-28 02:05:10,505 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 87 selfloop transitions, 23 changer transitions 0/116 dead transitions. [2024-06-28 02:05:10,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 116 transitions, 829 flow [2024-06-28 02:05:10,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:05:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:05:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 02:05:10,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-06-28 02:05:10,507 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 511 flow. Second operand 6 states and 148 transitions. [2024-06-28 02:05:10,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 116 transitions, 829 flow [2024-06-28 02:05:10,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 116 transitions, 792 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:10,525 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 532 flow [2024-06-28 02:05:10,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=532, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-06-28 02:05:10,526 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2024-06-28 02:05:10,526 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 532 flow [2024-06-28 02:05:10,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:10,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:10,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:10,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:05:10,527 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)] === [2024-06-28 02:05:10,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:10,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1884702098, now seen corresponding path program 3 times [2024-06-28 02:05:10,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:10,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787136564] [2024-06-28 02:05:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:10,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:14,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:14,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787136564] [2024-06-28 02:05:14,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787136564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:14,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:14,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:14,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660681034] [2024-06-28 02:05:14,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:14,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:14,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:14,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:14,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:14,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:05:14,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 532 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:14,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:14,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:05:14,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:16,071 INFO L124 PetriNetUnfolderBase]: 3754/5820 cut-off events. [2024-06-28 02:05:16,071 INFO L125 PetriNetUnfolderBase]: For 18055/18055 co-relation queries the response was YES. [2024-06-28 02:05:16,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19685 conditions, 5820 events. 3754/5820 cut-off events. For 18055/18055 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 33132 event pairs, 1105 based on Foata normal form. 20/5836 useless extension candidates. Maximal degree in co-relation 19654. Up to 4969 conditions per place. [2024-06-28 02:05:16,107 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 97 selfloop transitions, 24 changer transitions 0/127 dead transitions. [2024-06-28 02:05:16,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 127 transitions, 922 flow [2024-06-28 02:05:16,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:16,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 02:05:16,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-28 02:05:16,111 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 532 flow. Second operand 7 states and 170 transitions. [2024-06-28 02:05:16,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 127 transitions, 922 flow [2024-06-28 02:05:16,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 127 transitions, 867 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 02:05:16,141 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 567 flow [2024-06-28 02:05:16,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=567, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2024-06-28 02:05:16,142 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 30 predicate places. [2024-06-28 02:05:16,142 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 567 flow [2024-06-28 02:05:16,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:16,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:16,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:16,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:05:16,143 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)] === [2024-06-28 02:05:16,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:16,144 INFO L85 PathProgramCache]: Analyzing trace with hash 165948196, now seen corresponding path program 1 times [2024-06-28 02:05:16,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:16,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736949256] [2024-06-28 02:05:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:16,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:19,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:19,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736949256] [2024-06-28 02:05:19,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736949256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:19,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:19,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:05:19,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166574547] [2024-06-28 02:05:19,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:19,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:05:19,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:19,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:05:19,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:05:19,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:05:19,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 567 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:19,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:19,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:05:19,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:21,191 INFO L124 PetriNetUnfolderBase]: 3734/5788 cut-off events. [2024-06-28 02:05:21,191 INFO L125 PetriNetUnfolderBase]: For 19662/19662 co-relation queries the response was YES. [2024-06-28 02:05:21,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19789 conditions, 5788 events. 3734/5788 cut-off events. For 19662/19662 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 32904 event pairs, 930 based on Foata normal form. 12/5796 useless extension candidates. Maximal degree in co-relation 19757. Up to 4447 conditions per place. [2024-06-28 02:05:21,215 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 95 selfloop transitions, 30 changer transitions 0/131 dead transitions. [2024-06-28 02:05:21,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 131 transitions, 965 flow [2024-06-28 02:05:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 02:05:21,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531055900621118 [2024-06-28 02:05:21,217 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 567 flow. Second operand 7 states and 171 transitions. [2024-06-28 02:05:21,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 131 transitions, 965 flow [2024-06-28 02:05:21,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 131 transitions, 907 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:05:21,246 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 594 flow [2024-06-28 02:05:21,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=594, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2024-06-28 02:05:21,246 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2024-06-28 02:05:21,247 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 594 flow [2024-06-28 02:05:21,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:21,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:21,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:21,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:05:21,248 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:21,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:21,248 INFO L85 PathProgramCache]: Analyzing trace with hash -952991931, now seen corresponding path program 1 times [2024-06-28 02:05:21,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:21,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994359041] [2024-06-28 02:05:21,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:21,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:23,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:23,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994359041] [2024-06-28 02:05:23,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994359041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:23,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:23,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:05:23,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088055168] [2024-06-28 02:05:23,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:23,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:05:23,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:05:23,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:05:23,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:05:23,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 594 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:23,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:23,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:05:23,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:24,894 INFO L124 PetriNetUnfolderBase]: 3728/5781 cut-off events. [2024-06-28 02:05:24,894 INFO L125 PetriNetUnfolderBase]: For 21007/21007 co-relation queries the response was YES. [2024-06-28 02:05:24,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19982 conditions, 5781 events. 3728/5781 cut-off events. For 21007/21007 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 32799 event pairs, 1247 based on Foata normal form. 2/5782 useless extension candidates. Maximal degree in co-relation 19949. Up to 5368 conditions per place. [2024-06-28 02:05:24,926 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 102 selfloop transitions, 13 changer transitions 0/121 dead transitions. [2024-06-28 02:05:24,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 121 transitions, 1008 flow [2024-06-28 02:05:24,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:05:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:05:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 02:05:24,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-28 02:05:24,929 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 594 flow. Second operand 6 states and 132 transitions. [2024-06-28 02:05:24,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 121 transitions, 1008 flow [2024-06-28 02:05:24,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 121 transitions, 927 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:05:24,955 INFO L231 Difference]: Finished difference. Result has 84 places, 91 transitions, 652 flow [2024-06-28 02:05:24,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=652, PETRI_PLACES=84, PETRI_TRANSITIONS=91} [2024-06-28 02:05:24,956 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 34 predicate places. [2024-06-28 02:05:24,956 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 91 transitions, 652 flow [2024-06-28 02:05:24,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:24,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:24,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:24,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:05:24,957 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:24,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:24,958 INFO L85 PathProgramCache]: Analyzing trace with hash 517254670, now seen corresponding path program 1 times [2024-06-28 02:05:24,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:24,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263585747] [2024-06-28 02:05:24,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:24,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:27,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:27,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:27,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263585747] [2024-06-28 02:05:27,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263585747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:27,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:27,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:05:27,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910730348] [2024-06-28 02:05:27,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:27,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:05:27,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:27,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:05:27,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:05:27,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:05:27,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 91 transitions, 652 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:27,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:27,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:05:27,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:28,671 INFO L124 PetriNetUnfolderBase]: 3554/5612 cut-off events. [2024-06-28 02:05:28,671 INFO L125 PetriNetUnfolderBase]: For 21362/21362 co-relation queries the response was YES. [2024-06-28 02:05:28,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19868 conditions, 5612 events. 3554/5612 cut-off events. For 21362/21362 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 32416 event pairs, 1118 based on Foata normal form. 4/5613 useless extension candidates. Maximal degree in co-relation 19832. Up to 4956 conditions per place. [2024-06-28 02:05:28,700 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 107 selfloop transitions, 22 changer transitions 0/139 dead transitions. [2024-06-28 02:05:28,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 139 transitions, 1159 flow [2024-06-28 02:05:28,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:05:28,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:05:28,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 02:05:28,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253623188405797 [2024-06-28 02:05:28,701 INFO L175 Difference]: Start difference. First operand has 84 places, 91 transitions, 652 flow. Second operand 6 states and 145 transitions. [2024-06-28 02:05:28,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 139 transitions, 1159 flow [2024-06-28 02:05:28,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 139 transitions, 1153 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 02:05:28,726 INFO L231 Difference]: Finished difference. Result has 91 places, 102 transitions, 820 flow [2024-06-28 02:05:28,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=820, PETRI_PLACES=91, PETRI_TRANSITIONS=102} [2024-06-28 02:05:28,726 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 41 predicate places. [2024-06-28 02:05:28,726 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 102 transitions, 820 flow [2024-06-28 02:05:28,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:28,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:28,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:28,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:05:28,727 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:28,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:28,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1180695280, now seen corresponding path program 2 times [2024-06-28 02:05:28,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:28,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522693366] [2024-06-28 02:05:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:28,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:31,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:31,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522693366] [2024-06-28 02:05:31,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522693366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:31,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:31,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:05:31,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262427598] [2024-06-28 02:05:31,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:31,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:05:31,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:31,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:05:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:05:31,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:05:31,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 102 transitions, 820 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:31,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:31,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:05:31,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:32,405 INFO L124 PetriNetUnfolderBase]: 3609/5700 cut-off events. [2024-06-28 02:05:32,405 INFO L125 PetriNetUnfolderBase]: For 25407/25407 co-relation queries the response was YES. [2024-06-28 02:05:32,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21541 conditions, 5700 events. 3609/5700 cut-off events. For 25407/25407 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 33150 event pairs, 1248 based on Foata normal form. 6/5701 useless extension candidates. Maximal degree in co-relation 21500. Up to 5124 conditions per place. [2024-06-28 02:05:32,432 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 97 selfloop transitions, 30 changer transitions 0/137 dead transitions. [2024-06-28 02:05:32,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 137 transitions, 1224 flow [2024-06-28 02:05:32,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:05:32,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:05:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 02:05:32,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-06-28 02:05:32,434 INFO L175 Difference]: Start difference. First operand has 91 places, 102 transitions, 820 flow. Second operand 6 states and 140 transitions. [2024-06-28 02:05:32,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 137 transitions, 1224 flow [2024-06-28 02:05:32,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 1206 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 02:05:32,462 INFO L231 Difference]: Finished difference. Result has 96 places, 109 transitions, 955 flow [2024-06-28 02:05:32,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=955, PETRI_PLACES=96, PETRI_TRANSITIONS=109} [2024-06-28 02:05:32,463 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2024-06-28 02:05:32,463 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 109 transitions, 955 flow [2024-06-28 02:05:32,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:32,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:32,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:32,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:05:32,464 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:32,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:32,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1565655762, now seen corresponding path program 1 times [2024-06-28 02:05:32,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:32,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439238443] [2024-06-28 02:05:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:32,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:35,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:35,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439238443] [2024-06-28 02:05:35,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439238443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:35,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:35,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:35,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320467270] [2024-06-28 02:05:35,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:35,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:35,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:35,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:35,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:35,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:05:35,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 109 transitions, 955 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:35,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:35,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:05:35,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:37,403 INFO L124 PetriNetUnfolderBase]: 4228/6469 cut-off events. [2024-06-28 02:05:37,404 INFO L125 PetriNetUnfolderBase]: For 34184/34186 co-relation queries the response was YES. [2024-06-28 02:05:37,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26118 conditions, 6469 events. 4228/6469 cut-off events. For 34184/34186 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 36600 event pairs, 1247 based on Foata normal form. 6/6472 useless extension candidates. Maximal degree in co-relation 26074. Up to 5710 conditions per place. [2024-06-28 02:05:37,438 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 142 selfloop transitions, 46 changer transitions 0/194 dead transitions. [2024-06-28 02:05:37,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 194 transitions, 1932 flow [2024-06-28 02:05:37,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:05:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:05:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-28 02:05:37,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-06-28 02:05:37,440 INFO L175 Difference]: Start difference. First operand has 96 places, 109 transitions, 955 flow. Second operand 9 states and 201 transitions. [2024-06-28 02:05:37,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 194 transitions, 1932 flow [2024-06-28 02:05:37,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 194 transitions, 1810 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 02:05:37,496 INFO L231 Difference]: Finished difference. Result has 103 places, 135 transitions, 1294 flow [2024-06-28 02:05:37,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1294, PETRI_PLACES=103, PETRI_TRANSITIONS=135} [2024-06-28 02:05:37,497 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 53 predicate places. [2024-06-28 02:05:37,497 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 135 transitions, 1294 flow [2024-06-28 02:05:37,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:37,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:37,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:37,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:05:37,498 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:37,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:37,499 INFO L85 PathProgramCache]: Analyzing trace with hash 75483938, now seen corresponding path program 2 times [2024-06-28 02:05:37,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:37,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492303428] [2024-06-28 02:05:37,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:37,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:40,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:40,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:40,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492303428] [2024-06-28 02:05:40,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492303428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:40,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:40,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:40,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706338785] [2024-06-28 02:05:40,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:40,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:40,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:40,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:40,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:40,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:05:40,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 135 transitions, 1294 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:40,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:40,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:05:40,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:41,748 INFO L124 PetriNetUnfolderBase]: 4308/6621 cut-off events. [2024-06-28 02:05:41,748 INFO L125 PetriNetUnfolderBase]: For 38417/38417 co-relation queries the response was YES. [2024-06-28 02:05:41,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27624 conditions, 6621 events. 4308/6621 cut-off events. For 38417/38417 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 37686 event pairs, 1276 based on Foata normal form. 8/6622 useless extension candidates. Maximal degree in co-relation 27577. Up to 5720 conditions per place. [2024-06-28 02:05:41,789 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 108 selfloop transitions, 54 changer transitions 0/168 dead transitions. [2024-06-28 02:05:41,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 168 transitions, 1761 flow [2024-06-28 02:05:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:05:41,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:05:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 02:05:41,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:05:41,791 INFO L175 Difference]: Start difference. First operand has 103 places, 135 transitions, 1294 flow. Second operand 6 states and 138 transitions. [2024-06-28 02:05:41,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 168 transitions, 1761 flow [2024-06-28 02:05:41,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 168 transitions, 1665 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:41,843 INFO L231 Difference]: Finished difference. Result has 106 places, 138 transitions, 1365 flow [2024-06-28 02:05:41,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1365, PETRI_PLACES=106, PETRI_TRANSITIONS=138} [2024-06-28 02:05:41,843 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 56 predicate places. [2024-06-28 02:05:41,843 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 138 transitions, 1365 flow [2024-06-28 02:05:41,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:41,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:41,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:41,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:05:41,844 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:41,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:41,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1577083602, now seen corresponding path program 3 times [2024-06-28 02:05:41,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:41,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582294356] [2024-06-28 02:05:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:41,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:44,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:44,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582294356] [2024-06-28 02:05:44,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582294356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:44,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:44,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:44,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716465113] [2024-06-28 02:05:44,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:44,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:44,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:44,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:44,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:44,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:05:44,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 138 transitions, 1365 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:44,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:44,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:05:44,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:46,630 INFO L124 PetriNetUnfolderBase]: 4296/6599 cut-off events. [2024-06-28 02:05:46,630 INFO L125 PetriNetUnfolderBase]: For 39238/39238 co-relation queries the response was YES. [2024-06-28 02:05:46,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27961 conditions, 6599 events. 4296/6599 cut-off events. For 39238/39238 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 37512 event pairs, 1272 based on Foata normal form. 4/6596 useless extension candidates. Maximal degree in co-relation 27913. Up to 5628 conditions per place. [2024-06-28 02:05:46,666 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 117 selfloop transitions, 57 changer transitions 0/180 dead transitions. [2024-06-28 02:05:46,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 180 transitions, 1898 flow [2024-06-28 02:05:46,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 02:05:46,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2024-06-28 02:05:46,667 INFO L175 Difference]: Start difference. First operand has 106 places, 138 transitions, 1365 flow. Second operand 7 states and 160 transitions. [2024-06-28 02:05:46,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 180 transitions, 1898 flow [2024-06-28 02:05:46,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 180 transitions, 1792 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 02:05:46,736 INFO L231 Difference]: Finished difference. Result has 108 places, 141 transitions, 1419 flow [2024-06-28 02:05:46,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1419, PETRI_PLACES=108, PETRI_TRANSITIONS=141} [2024-06-28 02:05:46,737 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 58 predicate places. [2024-06-28 02:05:46,737 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 141 transitions, 1419 flow [2024-06-28 02:05:46,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:46,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:46,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:46,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:05:46,738 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:46,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:46,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1002869372, now seen corresponding path program 1 times [2024-06-28 02:05:46,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:46,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032306242] [2024-06-28 02:05:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:46,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:49,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:49,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:49,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032306242] [2024-06-28 02:05:49,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032306242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:49,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:49,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:49,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627201230] [2024-06-28 02:05:49,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:49,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:49,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:49,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:49,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:49,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:05:49,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 141 transitions, 1419 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:49,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:49,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:05:49,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:51,280 INFO L124 PetriNetUnfolderBase]: 4388/6728 cut-off events. [2024-06-28 02:05:51,280 INFO L125 PetriNetUnfolderBase]: For 42700/42702 co-relation queries the response was YES. [2024-06-28 02:05:51,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28620 conditions, 6728 events. 4388/6728 cut-off events. For 42700/42702 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 38307 event pairs, 2145 based on Foata normal form. 4/6731 useless extension candidates. Maximal degree in co-relation 28572. Up to 5966 conditions per place. [2024-06-28 02:05:51,317 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 176 selfloop transitions, 25 changer transitions 0/207 dead transitions. [2024-06-28 02:05:51,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 207 transitions, 2175 flow [2024-06-28 02:05:51,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 02:05:51,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515527950310559 [2024-06-28 02:05:51,319 INFO L175 Difference]: Start difference. First operand has 108 places, 141 transitions, 1419 flow. Second operand 7 states and 166 transitions. [2024-06-28 02:05:51,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 207 transitions, 2175 flow [2024-06-28 02:05:51,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 207 transitions, 2053 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 02:05:51,378 INFO L231 Difference]: Finished difference. Result has 112 places, 155 transitions, 1504 flow [2024-06-28 02:05:51,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1504, PETRI_PLACES=112, PETRI_TRANSITIONS=155} [2024-06-28 02:05:51,378 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 62 predicate places. [2024-06-28 02:05:51,378 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 155 transitions, 1504 flow [2024-06-28 02:05:51,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:51,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:51,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:51,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:05:51,379 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:51,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:51,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2052942622, now seen corresponding path program 2 times [2024-06-28 02:05:51,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:51,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379071175] [2024-06-28 02:05:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:51,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:54,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:54,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379071175] [2024-06-28 02:05:54,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379071175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:54,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:54,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:54,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772002645] [2024-06-28 02:05:54,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:54,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:54,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:54,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:54,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:54,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:05:54,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 155 transitions, 1504 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:54,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:54,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:05:54,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:56,205 INFO L124 PetriNetUnfolderBase]: 4500/6913 cut-off events. [2024-06-28 02:05:56,205 INFO L125 PetriNetUnfolderBase]: For 45321/45323 co-relation queries the response was YES. [2024-06-28 02:05:56,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30039 conditions, 6913 events. 4500/6913 cut-off events. For 45321/45323 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 39556 event pairs, 2189 based on Foata normal form. 4/6916 useless extension candidates. Maximal degree in co-relation 29988. Up to 6236 conditions per place. [2024-06-28 02:05:56,245 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 188 selfloop transitions, 26 changer transitions 0/220 dead transitions. [2024-06-28 02:05:56,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 220 transitions, 2242 flow [2024-06-28 02:05:56,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:05:56,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:05:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-28 02:05:56,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-28 02:05:56,247 INFO L175 Difference]: Start difference. First operand has 112 places, 155 transitions, 1504 flow. Second operand 9 states and 198 transitions. [2024-06-28 02:05:56,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 220 transitions, 2242 flow [2024-06-28 02:05:56,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 220 transitions, 2192 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:56,313 INFO L231 Difference]: Finished difference. Result has 120 places, 166 transitions, 1657 flow [2024-06-28 02:05:56,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1657, PETRI_PLACES=120, PETRI_TRANSITIONS=166} [2024-06-28 02:05:56,314 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 70 predicate places. [2024-06-28 02:05:56,314 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 166 transitions, 1657 flow [2024-06-28 02:05:56,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:56,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:56,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:56,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:05:56,315 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:05:56,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:56,315 INFO L85 PathProgramCache]: Analyzing trace with hash -997362842, now seen corresponding path program 3 times [2024-06-28 02:05:56,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:56,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054836603] [2024-06-28 02:05:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:56,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:59,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:59,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054836603] [2024-06-28 02:05:59,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054836603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:59,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:59,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:59,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339174299] [2024-06-28 02:05:59,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:59,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:59,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:59,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:59,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:59,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:05:59,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 166 transitions, 1657 flow. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:59,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:59,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:05:59,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:00,811 INFO L124 PetriNetUnfolderBase]: 4488/6901 cut-off events. [2024-06-28 02:06:00,812 INFO L125 PetriNetUnfolderBase]: For 49335/49337 co-relation queries the response was YES. [2024-06-28 02:06:00,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30314 conditions, 6901 events. 4488/6901 cut-off events. For 49335/49337 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 39588 event pairs, 2194 based on Foata normal form. 4/6904 useless extension candidates. Maximal degree in co-relation 30260. Up to 6228 conditions per place. [2024-06-28 02:06:00,857 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 174 selfloop transitions, 25 changer transitions 0/205 dead transitions. [2024-06-28 02:06:00,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 205 transitions, 2171 flow [2024-06-28 02:06:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:00,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 02:06:00,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4906832298136646 [2024-06-28 02:06:00,858 INFO L175 Difference]: Start difference. First operand has 120 places, 166 transitions, 1657 flow. Second operand 7 states and 158 transitions. [2024-06-28 02:06:00,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 205 transitions, 2171 flow [2024-06-28 02:06:00,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 205 transitions, 2089 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 02:06:00,943 INFO L231 Difference]: Finished difference. Result has 123 places, 166 transitions, 1632 flow [2024-06-28 02:06:00,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1632, PETRI_PLACES=123, PETRI_TRANSITIONS=166} [2024-06-28 02:06:00,944 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 73 predicate places. [2024-06-28 02:06:00,944 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 166 transitions, 1632 flow [2024-06-28 02:06:00,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:00,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:00,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:00,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:06:00,944 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:00,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:00,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1577097490, now seen corresponding path program 1 times [2024-06-28 02:06:00,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:00,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780780631] [2024-06-28 02:06:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:00,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:05,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:05,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780780631] [2024-06-28 02:06:05,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780780631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:05,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:05,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:06:05,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261194275] [2024-06-28 02:06:05,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:05,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:06:05,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:05,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:06:05,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:06:05,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:06:05,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 166 transitions, 1632 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 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) [2024-06-28 02:06:05,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:05,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:06:05,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:06,951 INFO L124 PetriNetUnfolderBase]: 4483/6906 cut-off events. [2024-06-28 02:06:06,951 INFO L125 PetriNetUnfolderBase]: For 50093/50095 co-relation queries the response was YES. [2024-06-28 02:06:06,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30426 conditions, 6906 events. 4483/6906 cut-off events. For 50093/50095 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 39765 event pairs, 2211 based on Foata normal form. 2/6907 useless extension candidates. Maximal degree in co-relation 30370. Up to 6363 conditions per place. [2024-06-28 02:06:06,991 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 184 selfloop transitions, 16 changer transitions 0/206 dead transitions. [2024-06-28 02:06:06,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 206 transitions, 2206 flow [2024-06-28 02:06:06,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:06,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-28 02:06:06,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720496894409938 [2024-06-28 02:06:06,994 INFO L175 Difference]: Start difference. First operand has 123 places, 166 transitions, 1632 flow. Second operand 7 states and 152 transitions. [2024-06-28 02:06:06,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 206 transitions, 2206 flow [2024-06-28 02:06:07,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 206 transitions, 2154 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 02:06:07,067 INFO L231 Difference]: Finished difference. Result has 124 places, 168 transitions, 1637 flow [2024-06-28 02:06:07,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1637, PETRI_PLACES=124, PETRI_TRANSITIONS=168} [2024-06-28 02:06:07,067 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 74 predicate places. [2024-06-28 02:06:07,067 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 168 transitions, 1637 flow [2024-06-28 02:06:07,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 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) [2024-06-28 02:06:07,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:07,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:07,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:06:07,068 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:07,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:07,068 INFO L85 PathProgramCache]: Analyzing trace with hash -811082453, now seen corresponding path program 1 times [2024-06-28 02:06:07,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:07,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272103228] [2024-06-28 02:06:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:07,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:10,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:10,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272103228] [2024-06-28 02:06:10,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272103228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:10,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:10,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:10,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789972450] [2024-06-28 02:06:10,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:10,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:10,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:10,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:10,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:10,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:06:10,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 168 transitions, 1637 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) [2024-06-28 02:06:10,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:10,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:06:10,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:12,032 INFO L124 PetriNetUnfolderBase]: 4316/6660 cut-off events. [2024-06-28 02:06:12,032 INFO L125 PetriNetUnfolderBase]: For 51210/51256 co-relation queries the response was YES. [2024-06-28 02:06:12,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29602 conditions, 6660 events. 4316/6660 cut-off events. For 51210/51256 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 38125 event pairs, 1024 based on Foata normal form. 39/6675 useless extension candidates. Maximal degree in co-relation 29545. Up to 5540 conditions per place. [2024-06-28 02:06:12,084 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 164 selfloop transitions, 42 changer transitions 0/224 dead transitions. [2024-06-28 02:06:12,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 224 transitions, 2366 flow [2024-06-28 02:06:12,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:12,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:12,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 02:06:12,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-28 02:06:12,086 INFO L175 Difference]: Start difference. First operand has 124 places, 168 transitions, 1637 flow. Second operand 7 states and 170 transitions. [2024-06-28 02:06:12,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 224 transitions, 2366 flow [2024-06-28 02:06:12,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 224 transitions, 2329 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:12,176 INFO L231 Difference]: Finished difference. Result has 127 places, 173 transitions, 1759 flow [2024-06-28 02:06:12,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1759, PETRI_PLACES=127, PETRI_TRANSITIONS=173} [2024-06-28 02:06:12,177 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 77 predicate places. [2024-06-28 02:06:12,177 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 173 transitions, 1759 flow [2024-06-28 02:06:12,177 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) [2024-06-28 02:06:12,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:12,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:12,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:06:12,178 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:12,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:12,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1137206801, now seen corresponding path program 2 times [2024-06-28 02:06:12,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:12,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820752730] [2024-06-28 02:06:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:12,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:15,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:15,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820752730] [2024-06-28 02:06:15,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820752730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:15,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:15,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:15,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794721264] [2024-06-28 02:06:15,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:15,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:15,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:15,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:15,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:15,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:06:15,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 173 transitions, 1759 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) [2024-06-28 02:06:15,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:15,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:06:15,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:17,101 INFO L124 PetriNetUnfolderBase]: 4380/6788 cut-off events. [2024-06-28 02:06:17,101 INFO L125 PetriNetUnfolderBase]: For 56793/56839 co-relation queries the response was YES. [2024-06-28 02:06:17,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31105 conditions, 6788 events. 4380/6788 cut-off events. For 56793/56839 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 39305 event pairs, 1146 based on Foata normal form. 39/6803 useless extension candidates. Maximal degree in co-relation 31046. Up to 5826 conditions per place. [2024-06-28 02:06:17,143 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 161 selfloop transitions, 41 changer transitions 0/220 dead transitions. [2024-06-28 02:06:17,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 220 transitions, 2378 flow [2024-06-28 02:06:17,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:17,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:17,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 02:06:17,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124223602484472 [2024-06-28 02:06:17,144 INFO L175 Difference]: Start difference. First operand has 127 places, 173 transitions, 1759 flow. Second operand 7 states and 165 transitions. [2024-06-28 02:06:17,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 220 transitions, 2378 flow [2024-06-28 02:06:17,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 220 transitions, 2314 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 02:06:17,235 INFO L231 Difference]: Finished difference. Result has 131 places, 175 transitions, 1807 flow [2024-06-28 02:06:17,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1807, PETRI_PLACES=131, PETRI_TRANSITIONS=175} [2024-06-28 02:06:17,235 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 81 predicate places. [2024-06-28 02:06:17,235 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 175 transitions, 1807 flow [2024-06-28 02:06:17,235 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) [2024-06-28 02:06:17,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:17,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:17,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:06:17,236 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:17,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:17,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1275557451, now seen corresponding path program 3 times [2024-06-28 02:06:17,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:17,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133318976] [2024-06-28 02:06:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:17,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:20,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:20,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133318976] [2024-06-28 02:06:20,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133318976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:20,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:20,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101117777] [2024-06-28 02:06:20,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:20,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:20,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:20,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:20,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 02:06:20,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 175 transitions, 1807 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) [2024-06-28 02:06:20,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:20,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 02:06:20,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:22,382 INFO L124 PetriNetUnfolderBase]: 4543/7070 cut-off events. [2024-06-28 02:06:22,382 INFO L125 PetriNetUnfolderBase]: For 61267/61310 co-relation queries the response was YES. [2024-06-28 02:06:22,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32548 conditions, 7070 events. 4543/7070 cut-off events. For 61267/61310 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 41574 event pairs, 1325 based on Foata normal form. 39/7081 useless extension candidates. Maximal degree in co-relation 32487. Up to 5933 conditions per place. [2024-06-28 02:06:22,440 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 144 selfloop transitions, 56 changer transitions 0/218 dead transitions. [2024-06-28 02:06:22,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 218 transitions, 2399 flow [2024-06-28 02:06:22,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:22,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 02:06:22,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124223602484472 [2024-06-28 02:06:22,442 INFO L175 Difference]: Start difference. First operand has 131 places, 175 transitions, 1807 flow. Second operand 7 states and 165 transitions. [2024-06-28 02:06:22,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 218 transitions, 2399 flow [2024-06-28 02:06:22,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 218 transitions, 2313 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:22,539 INFO L231 Difference]: Finished difference. Result has 133 places, 179 transitions, 1907 flow [2024-06-28 02:06:22,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1907, PETRI_PLACES=133, PETRI_TRANSITIONS=179} [2024-06-28 02:06:22,539 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 83 predicate places. [2024-06-28 02:06:22,539 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 179 transitions, 1907 flow [2024-06-28 02:06:22,539 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) [2024-06-28 02:06:22,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:22,540 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] [2024-06-28 02:06:22,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:06:22,540 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:22,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:22,540 INFO L85 PathProgramCache]: Analyzing trace with hash -808345292, now seen corresponding path program 1 times [2024-06-28 02:06:22,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:22,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527017692] [2024-06-28 02:06:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:22,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:25,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:25,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527017692] [2024-06-28 02:06:25,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527017692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:25,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:25,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:25,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015836898] [2024-06-28 02:06:25,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:25,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:25,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:25,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:25,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:25,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:06:25,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 179 transitions, 1907 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:25,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:25,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:06:25,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:27,132 INFO L124 PetriNetUnfolderBase]: 4853/7385 cut-off events. [2024-06-28 02:06:27,132 INFO L125 PetriNetUnfolderBase]: For 64663/64663 co-relation queries the response was YES. [2024-06-28 02:06:27,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34894 conditions, 7385 events. 4853/7385 cut-off events. For 64663/64663 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 42290 event pairs, 1110 based on Foata normal form. 2/7380 useless extension candidates. Maximal degree in co-relation 34832. Up to 6586 conditions per place. [2024-06-28 02:06:27,183 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 172 selfloop transitions, 41 changer transitions 0/219 dead transitions. [2024-06-28 02:06:27,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 219 transitions, 2599 flow [2024-06-28 02:06:27,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:06:27,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:06:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 02:06:27,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-06-28 02:06:27,185 INFO L175 Difference]: Start difference. First operand has 133 places, 179 transitions, 1907 flow. Second operand 6 states and 140 transitions. [2024-06-28 02:06:27,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 219 transitions, 2599 flow [2024-06-28 02:06:27,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 219 transitions, 2473 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:27,291 INFO L231 Difference]: Finished difference. Result has 135 places, 184 transitions, 1964 flow [2024-06-28 02:06:27,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1964, PETRI_PLACES=135, PETRI_TRANSITIONS=184} [2024-06-28 02:06:27,292 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 85 predicate places. [2024-06-28 02:06:27,292 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 184 transitions, 1964 flow [2024-06-28 02:06:27,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:27,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:27,292 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] [2024-06-28 02:06:27,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:06:27,293 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:27,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:27,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1023581634, now seen corresponding path program 2 times [2024-06-28 02:06:27,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:27,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918953474] [2024-06-28 02:06:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:27,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:30,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:30,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918953474] [2024-06-28 02:06:30,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918953474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:30,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:30,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:06:30,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144128439] [2024-06-28 02:06:30,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:30,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:06:30,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:30,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:06:30,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:06:30,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:06:30,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 184 transitions, 1964 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 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) [2024-06-28 02:06:30,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:30,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:06:30,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:32,233 INFO L124 PetriNetUnfolderBase]: 4848/7481 cut-off events. [2024-06-28 02:06:32,234 INFO L125 PetriNetUnfolderBase]: For 65759/65759 co-relation queries the response was YES. [2024-06-28 02:06:32,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34975 conditions, 7481 events. 4848/7481 cut-off events. For 65759/65759 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 43902 event pairs, 1392 based on Foata normal form. 2/7476 useless extension candidates. Maximal degree in co-relation 34911. Up to 6696 conditions per place. [2024-06-28 02:06:32,302 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 164 selfloop transitions, 44 changer transitions 0/214 dead transitions. [2024-06-28 02:06:32,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 214 transitions, 2515 flow [2024-06-28 02:06:32,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:06:32,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:06:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 02:06:32,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-28 02:06:32,303 INFO L175 Difference]: Start difference. First operand has 135 places, 184 transitions, 1964 flow. Second operand 6 states and 135 transitions. [2024-06-28 02:06:32,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 214 transitions, 2515 flow [2024-06-28 02:06:32,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 214 transitions, 2438 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-28 02:06:32,447 INFO L231 Difference]: Finished difference. Result has 139 places, 185 transitions, 2001 flow [2024-06-28 02:06:32,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1895, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2001, PETRI_PLACES=139, PETRI_TRANSITIONS=185} [2024-06-28 02:06:32,448 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 89 predicate places. [2024-06-28 02:06:32,448 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 185 transitions, 2001 flow [2024-06-28 02:06:32,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 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) [2024-06-28 02:06:32,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:32,449 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] [2024-06-28 02:06:32,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:06:32,449 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:32,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:32,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1687019268, now seen corresponding path program 1 times [2024-06-28 02:06:32,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:32,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061041506] [2024-06-28 02:06:32,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:32,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:35,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:35,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061041506] [2024-06-28 02:06:35,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061041506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:35,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:35,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:06:35,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123174891] [2024-06-28 02:06:35,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:35,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:06:35,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:35,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:06:35,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:06:35,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:06:35,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 185 transitions, 2001 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 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) [2024-06-28 02:06:35,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:35,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:06:35,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:37,661 INFO L124 PetriNetUnfolderBase]: 4914/7480 cut-off events. [2024-06-28 02:06:37,662 INFO L125 PetriNetUnfolderBase]: For 69646/69646 co-relation queries the response was YES. [2024-06-28 02:06:37,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35668 conditions, 7480 events. 4914/7480 cut-off events. For 69646/69646 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 43053 event pairs, 1152 based on Foata normal form. 2/7475 useless extension candidates. Maximal degree in co-relation 35602. Up to 6362 conditions per place. [2024-06-28 02:06:37,717 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 152 selfloop transitions, 68 changer transitions 0/226 dead transitions. [2024-06-28 02:06:37,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 226 transitions, 2678 flow [2024-06-28 02:06:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:06:37,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:06:37,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 02:06:37,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253623188405797 [2024-06-28 02:06:37,718 INFO L175 Difference]: Start difference. First operand has 139 places, 185 transitions, 2001 flow. Second operand 6 states and 145 transitions. [2024-06-28 02:06:37,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 226 transitions, 2678 flow [2024-06-28 02:06:37,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 226 transitions, 2595 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:06:37,821 INFO L231 Difference]: Finished difference. Result has 142 places, 192 transitions, 2231 flow [2024-06-28 02:06:37,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2231, PETRI_PLACES=142, PETRI_TRANSITIONS=192} [2024-06-28 02:06:37,822 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 92 predicate places. [2024-06-28 02:06:37,822 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 192 transitions, 2231 flow [2024-06-28 02:06:37,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 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) [2024-06-28 02:06:37,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:37,822 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] [2024-06-28 02:06:37,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:06:37,822 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:37,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:37,823 INFO L85 PathProgramCache]: Analyzing trace with hash 433377646, now seen corresponding path program 2 times [2024-06-28 02:06:37,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:37,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788606926] [2024-06-28 02:06:37,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:37,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:40,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:40,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788606926] [2024-06-28 02:06:40,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788606926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:40,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:40,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:40,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501595781] [2024-06-28 02:06:40,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:40,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:40,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:40,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:40,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:40,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:06:40,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 192 transitions, 2231 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:40,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:40,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:06:40,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:42,869 INFO L124 PetriNetUnfolderBase]: 4960/7502 cut-off events. [2024-06-28 02:06:42,869 INFO L125 PetriNetUnfolderBase]: For 78658/78658 co-relation queries the response was YES. [2024-06-28 02:06:42,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37535 conditions, 7502 events. 4960/7502 cut-off events. For 78658/78658 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 42884 event pairs, 1156 based on Foata normal form. 2/7497 useless extension candidates. Maximal degree in co-relation 37467. Up to 6267 conditions per place. [2024-06-28 02:06:42,935 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 169 selfloop transitions, 72 changer transitions 0/247 dead transitions. [2024-06-28 02:06:42,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 247 transitions, 3090 flow [2024-06-28 02:06:42,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 02:06:42,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-28 02:06:42,937 INFO L175 Difference]: Start difference. First operand has 142 places, 192 transitions, 2231 flow. Second operand 7 states and 170 transitions. [2024-06-28 02:06:42,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 247 transitions, 3090 flow [2024-06-28 02:06:43,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 247 transitions, 2992 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 02:06:43,129 INFO L231 Difference]: Finished difference. Result has 147 places, 199 transitions, 2429 flow [2024-06-28 02:06:43,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2137, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2429, PETRI_PLACES=147, PETRI_TRANSITIONS=199} [2024-06-28 02:06:43,130 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 97 predicate places. [2024-06-28 02:06:43,130 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 199 transitions, 2429 flow [2024-06-28 02:06:43,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:43,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:43,131 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] [2024-06-28 02:06:43,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:06:43,131 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:43,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:43,132 INFO L85 PathProgramCache]: Analyzing trace with hash 433646416, now seen corresponding path program 3 times [2024-06-28 02:06:43,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:43,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103453663] [2024-06-28 02:06:43,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:43,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:46,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:46,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103453663] [2024-06-28 02:06:46,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103453663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:46,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:46,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:46,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902272799] [2024-06-28 02:06:46,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:46,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:46,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:46,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:46,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:46,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:06:46,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 199 transitions, 2429 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:46,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:46,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:06:46,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:48,822 INFO L124 PetriNetUnfolderBase]: 5006/7636 cut-off events. [2024-06-28 02:06:48,822 INFO L125 PetriNetUnfolderBase]: For 84054/84054 co-relation queries the response was YES. [2024-06-28 02:06:48,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39313 conditions, 7636 events. 5006/7636 cut-off events. For 84054/84054 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 44353 event pairs, 1173 based on Foata normal form. 2/7631 useless extension candidates. Maximal degree in co-relation 39243. Up to 6307 conditions per place. [2024-06-28 02:06:48,878 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 162 selfloop transitions, 78 changer transitions 0/246 dead transitions. [2024-06-28 02:06:48,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 246 transitions, 3209 flow [2024-06-28 02:06:48,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:48,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 02:06:48,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186335403726708 [2024-06-28 02:06:48,880 INFO L175 Difference]: Start difference. First operand has 147 places, 199 transitions, 2429 flow. Second operand 7 states and 167 transitions. [2024-06-28 02:06:48,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 246 transitions, 3209 flow [2024-06-28 02:06:49,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 246 transitions, 3011 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 02:06:49,023 INFO L231 Difference]: Finished difference. Result has 150 places, 202 transitions, 2450 flow [2024-06-28 02:06:49,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2450, PETRI_PLACES=150, PETRI_TRANSITIONS=202} [2024-06-28 02:06:49,024 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 100 predicate places. [2024-06-28 02:06:49,025 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 202 transitions, 2450 flow [2024-06-28 02:06:49,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:49,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:49,025 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] [2024-06-28 02:06:49,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:06:49,025 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:49,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:49,026 INFO L85 PathProgramCache]: Analyzing trace with hash 167074183, now seen corresponding path program 1 times [2024-06-28 02:06:49,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:49,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134591499] [2024-06-28 02:06:49,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:49,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:51,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:51,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:51,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134591499] [2024-06-28 02:06:51,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134591499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:51,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:51,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:51,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136972776] [2024-06-28 02:06:51,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:51,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:51,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:51,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:51,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:51,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:06:51,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 202 transitions, 2450 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:51,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:51,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:06:51,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:54,178 INFO L124 PetriNetUnfolderBase]: 5202/7961 cut-off events. [2024-06-28 02:06:54,178 INFO L125 PetriNetUnfolderBase]: For 84202/84212 co-relation queries the response was YES. [2024-06-28 02:06:54,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39901 conditions, 7961 events. 5202/7961 cut-off events. For 84202/84212 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 46502 event pairs, 1170 based on Foata normal form. 12/7970 useless extension candidates. Maximal degree in co-relation 39830. Up to 6439 conditions per place. [2024-06-28 02:06:54,240 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 207 selfloop transitions, 67 changer transitions 0/280 dead transitions. [2024-06-28 02:06:54,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 280 transitions, 3466 flow [2024-06-28 02:06:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:06:54,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:06:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 02:06:54,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096618357487923 [2024-06-28 02:06:54,242 INFO L175 Difference]: Start difference. First operand has 150 places, 202 transitions, 2450 flow. Second operand 9 states and 211 transitions. [2024-06-28 02:06:54,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 280 transitions, 3466 flow [2024-06-28 02:06:54,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 280 transitions, 3355 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:06:54,396 INFO L231 Difference]: Finished difference. Result has 157 places, 216 transitions, 2667 flow [2024-06-28 02:06:54,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2667, PETRI_PLACES=157, PETRI_TRANSITIONS=216} [2024-06-28 02:06:54,396 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 107 predicate places. [2024-06-28 02:06:54,397 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 216 transitions, 2667 flow [2024-06-28 02:06:54,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:54,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:54,397 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] [2024-06-28 02:06:54,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:06:54,397 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:06:54,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:54,398 INFO L85 PathProgramCache]: Analyzing trace with hash -474323423, now seen corresponding path program 2 times [2024-06-28 02:06:54,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:54,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117118310] [2024-06-28 02:06:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:54,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:57,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:57,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117118310] [2024-06-28 02:06:57,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117118310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:57,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:57,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:57,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201215600] [2024-06-28 02:06:57,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:57,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:57,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:57,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:57,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:57,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:06:57,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 216 transitions, 2667 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:57,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:57,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:06:57,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:59,675 INFO L124 PetriNetUnfolderBase]: 5640/8548 cut-off events. [2024-06-28 02:06:59,675 INFO L125 PetriNetUnfolderBase]: For 100795/100795 co-relation queries the response was YES. [2024-06-28 02:06:59,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45132 conditions, 8548 events. 5640/8548 cut-off events. For 100795/100795 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 49564 event pairs, 1385 based on Foata normal form. 8/8549 useless extension candidates. Maximal degree in co-relation 45058. Up to 6924 conditions per place. [2024-06-28 02:06:59,738 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 188 selfloop transitions, 93 changer transitions 0/287 dead transitions. [2024-06-28 02:06:59,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 287 transitions, 3731 flow [2024-06-28 02:06:59,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:06:59,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:06:59,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 02:06:59,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-06-28 02:06:59,740 INFO L175 Difference]: Start difference. First operand has 157 places, 216 transitions, 2667 flow. Second operand 9 states and 210 transitions. [2024-06-28 02:06:59,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 287 transitions, 3731 flow [2024-06-28 02:06:59,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 287 transitions, 3611 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:59,940 INFO L231 Difference]: Finished difference. Result has 163 places, 234 transitions, 3094 flow [2024-06-28 02:06:59,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3094, PETRI_PLACES=163, PETRI_TRANSITIONS=234} [2024-06-28 02:06:59,941 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 113 predicate places. [2024-06-28 02:06:59,941 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 234 transitions, 3094 flow [2024-06-28 02:06:59,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:59,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:59,941 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] [2024-06-28 02:06:59,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:06:59,942 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)] === [2024-06-28 02:06:59,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:59,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1139465933, now seen corresponding path program 3 times [2024-06-28 02:06:59,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:59,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404650698] [2024-06-28 02:06:59,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:59,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:02,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:02,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404650698] [2024-06-28 02:07:02,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404650698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:02,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:02,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:02,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005473278] [2024-06-28 02:07:02,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:02,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:02,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:02,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:02,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:02,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:07:02,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 234 transitions, 3094 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:02,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:02,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:07:02,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:05,164 INFO L124 PetriNetUnfolderBase]: 5616/8516 cut-off events. [2024-06-28 02:07:05,164 INFO L125 PetriNetUnfolderBase]: For 108587/108587 co-relation queries the response was YES. [2024-06-28 02:07:05,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46679 conditions, 8516 events. 5616/8516 cut-off events. For 108587/108587 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 49426 event pairs, 1381 based on Foata normal form. 8/8517 useless extension candidates. Maximal degree in co-relation 46602. Up to 6908 conditions per place. [2024-06-28 02:07:05,237 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 180 selfloop transitions, 93 changer transitions 0/279 dead transitions. [2024-06-28 02:07:05,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 279 transitions, 3799 flow [2024-06-28 02:07:05,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:07:05,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:07:05,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 02:07:05,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081521739130435 [2024-06-28 02:07:05,241 INFO L175 Difference]: Start difference. First operand has 163 places, 234 transitions, 3094 flow. Second operand 8 states and 187 transitions. [2024-06-28 02:07:05,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 279 transitions, 3799 flow [2024-06-28 02:07:05,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 279 transitions, 3587 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-28 02:07:05,545 INFO L231 Difference]: Finished difference. Result has 167 places, 234 transitions, 3084 flow [2024-06-28 02:07:05,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2882, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3084, PETRI_PLACES=167, PETRI_TRANSITIONS=234} [2024-06-28 02:07:05,546 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 117 predicate places. [2024-06-28 02:07:05,546 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 234 transitions, 3084 flow [2024-06-28 02:07:05,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:05,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:05,547 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] [2024-06-28 02:07:05,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:07:05,547 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)] === [2024-06-28 02:07:05,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:05,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1139466274, now seen corresponding path program 4 times [2024-06-28 02:07:05,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:05,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353641652] [2024-06-28 02:07:05,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:05,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:08,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:08,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353641652] [2024-06-28 02:07:08,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353641652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:08,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:08,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:08,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728650058] [2024-06-28 02:07:08,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:08,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:08,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:08,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:08,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:08,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:07:08,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 234 transitions, 3084 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:08,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:08,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:07:08,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:10,691 INFO L124 PetriNetUnfolderBase]: 5620/8523 cut-off events. [2024-06-28 02:07:10,692 INFO L125 PetriNetUnfolderBase]: For 105977/105977 co-relation queries the response was YES. [2024-06-28 02:07:10,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46729 conditions, 8523 events. 5620/8523 cut-off events. For 105977/105977 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 50243 event pairs, 1514 based on Foata normal form. 2/8518 useless extension candidates. Maximal degree in co-relation 46650. Up to 7580 conditions per place. [2024-06-28 02:07:10,767 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 207 selfloop transitions, 60 changer transitions 0/273 dead transitions. [2024-06-28 02:07:10,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 273 transitions, 3801 flow [2024-06-28 02:07:10,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:07:10,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:07:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 02:07:10,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-28 02:07:10,768 INFO L175 Difference]: Start difference. First operand has 167 places, 234 transitions, 3084 flow. Second operand 7 states and 159 transitions. [2024-06-28 02:07:10,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 273 transitions, 3801 flow [2024-06-28 02:07:11,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 273 transitions, 3582 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 02:07:11,021 INFO L231 Difference]: Finished difference. Result has 166 places, 238 transitions, 3077 flow [2024-06-28 02:07:11,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3077, PETRI_PLACES=166, PETRI_TRANSITIONS=238} [2024-06-28 02:07:11,021 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 116 predicate places. [2024-06-28 02:07:11,021 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 238 transitions, 3077 flow [2024-06-28 02:07:11,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:11,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:11,022 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] [2024-06-28 02:07:11,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:07:11,022 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)] === [2024-06-28 02:07:11,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:11,022 INFO L85 PathProgramCache]: Analyzing trace with hash 581471683, now seen corresponding path program 1 times [2024-06-28 02:07:11,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:11,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907192189] [2024-06-28 02:07:11,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:11,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:14,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:14,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:14,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907192189] [2024-06-28 02:07:14,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907192189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:14,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:14,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:07:14,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851139524] [2024-06-28 02:07:14,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:14,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:07:14,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:14,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:07:14,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:07:14,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:07:14,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 238 transitions, 3077 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:14,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:14,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:07:14,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:17,122 INFO L124 PetriNetUnfolderBase]: 5832/8905 cut-off events. [2024-06-28 02:07:17,122 INFO L125 PetriNetUnfolderBase]: For 106070/106070 co-relation queries the response was YES. [2024-06-28 02:07:17,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47636 conditions, 8905 events. 5832/8905 cut-off events. For 106070/106070 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 52711 event pairs, 1527 based on Foata normal form. 12/8910 useless extension candidates. Maximal degree in co-relation 47557. Up to 7496 conditions per place. [2024-06-28 02:07:17,185 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 212 selfloop transitions, 63 changer transitions 0/281 dead transitions. [2024-06-28 02:07:17,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 281 transitions, 3856 flow [2024-06-28 02:07:17,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:07:17,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:07:17,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 02:07:17,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062111801242236 [2024-06-28 02:07:17,186 INFO L175 Difference]: Start difference. First operand has 166 places, 238 transitions, 3077 flow. Second operand 7 states and 163 transitions. [2024-06-28 02:07:17,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 281 transitions, 3856 flow [2024-06-28 02:07:17,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 281 transitions, 3700 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 02:07:17,379 INFO L231 Difference]: Finished difference. Result has 168 places, 239 transitions, 3080 flow [2024-06-28 02:07:17,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2921, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3080, PETRI_PLACES=168, PETRI_TRANSITIONS=239} [2024-06-28 02:07:17,379 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 118 predicate places. [2024-06-28 02:07:17,380 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 239 transitions, 3080 flow [2024-06-28 02:07:17,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:17,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:17,380 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] [2024-06-28 02:07:17,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:07:17,380 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)] === [2024-06-28 02:07:17,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:17,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1736453679, now seen corresponding path program 4 times [2024-06-28 02:07:17,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:17,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621634203] [2024-06-28 02:07:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:17,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:20,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:20,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621634203] [2024-06-28 02:07:20,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621634203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:20,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:20,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:20,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399254047] [2024-06-28 02:07:20,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:20,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:20,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:20,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:20,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:20,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:07:20,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 239 transitions, 3080 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:20,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:20,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:07:20,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:23,059 INFO L124 PetriNetUnfolderBase]: 5924/9013 cut-off events. [2024-06-28 02:07:23,059 INFO L125 PetriNetUnfolderBase]: For 109243/109253 co-relation queries the response was YES. [2024-06-28 02:07:23,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48665 conditions, 9013 events. 5924/9013 cut-off events. For 109243/109253 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 53055 event pairs, 1431 based on Foata normal form. 12/9022 useless extension candidates. Maximal degree in co-relation 48585. Up to 6991 conditions per place. [2024-06-28 02:07:23,136 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 230 selfloop transitions, 73 changer transitions 0/309 dead transitions. [2024-06-28 02:07:23,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 309 transitions, 4155 flow [2024-06-28 02:07:23,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:07:23,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:07:23,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:07:23,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 02:07:23,138 INFO L175 Difference]: Start difference. First operand has 168 places, 239 transitions, 3080 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:07:23,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 309 transitions, 4155 flow [2024-06-28 02:07:23,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 309 transitions, 4022 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 02:07:23,369 INFO L231 Difference]: Finished difference. Result has 172 places, 248 transitions, 3244 flow [2024-06-28 02:07:23,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2951, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3244, PETRI_PLACES=172, PETRI_TRANSITIONS=248} [2024-06-28 02:07:23,370 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 122 predicate places. [2024-06-28 02:07:23,370 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 248 transitions, 3244 flow [2024-06-28 02:07:23,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:23,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:23,370 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] [2024-06-28 02:07:23,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:07:23,370 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)] === [2024-06-28 02:07:23,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:23,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1592768449, now seen corresponding path program 5 times [2024-06-28 02:07:23,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:23,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532401119] [2024-06-28 02:07:23,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:23,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:26,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:26,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532401119] [2024-06-28 02:07:26,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532401119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:26,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:26,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:26,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115442461] [2024-06-28 02:07:26,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:26,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:26,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:26,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:26,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:26,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:07:26,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 248 transitions, 3244 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:26,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:26,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:07:26,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:28,722 INFO L124 PetriNetUnfolderBase]: 6160/9332 cut-off events. [2024-06-28 02:07:28,723 INFO L125 PetriNetUnfolderBase]: For 121042/121042 co-relation queries the response was YES. [2024-06-28 02:07:28,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52212 conditions, 9332 events. 6160/9332 cut-off events. For 121042/121042 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 54838 event pairs, 1473 based on Foata normal form. 4/9329 useless extension candidates. Maximal degree in co-relation 52130. Up to 7194 conditions per place. [2024-06-28 02:07:28,809 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 198 selfloop transitions, 107 changer transitions 0/311 dead transitions. [2024-06-28 02:07:28,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 311 transitions, 4383 flow [2024-06-28 02:07:28,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:07:28,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:07:28,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 02:07:28,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-28 02:07:28,811 INFO L175 Difference]: Start difference. First operand has 172 places, 248 transitions, 3244 flow. Second operand 8 states and 190 transitions. [2024-06-28 02:07:28,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 311 transitions, 4383 flow [2024-06-28 02:07:29,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 311 transitions, 4330 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 02:07:29,065 INFO L231 Difference]: Finished difference. Result has 179 places, 264 transitions, 3807 flow [2024-06-28 02:07:29,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3195, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3807, PETRI_PLACES=179, PETRI_TRANSITIONS=264} [2024-06-28 02:07:29,066 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 129 predicate places. [2024-06-28 02:07:29,066 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 264 transitions, 3807 flow [2024-06-28 02:07:29,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:29,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:29,067 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] [2024-06-28 02:07:29,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:07:29,067 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)] === [2024-06-28 02:07:29,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:29,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1809155015, now seen corresponding path program 6 times [2024-06-28 02:07:29,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:29,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657161619] [2024-06-28 02:07:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:29,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:32,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:32,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657161619] [2024-06-28 02:07:32,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657161619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:32,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:32,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:32,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056518584] [2024-06-28 02:07:32,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:32,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:32,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:32,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:32,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:32,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:07:32,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 264 transitions, 3807 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:32,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:32,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:07:32,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:34,861 INFO L124 PetriNetUnfolderBase]: 6148/9390 cut-off events. [2024-06-28 02:07:34,861 INFO L125 PetriNetUnfolderBase]: For 137884/137884 co-relation queries the response was YES. [2024-06-28 02:07:34,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54842 conditions, 9390 events. 6148/9390 cut-off events. For 137884/137884 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 56286 event pairs, 1646 based on Foata normal form. 4/9387 useless extension candidates. Maximal degree in co-relation 54755. Up to 8296 conditions per place. [2024-06-28 02:07:34,942 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 240 selfloop transitions, 61 changer transitions 0/307 dead transitions. [2024-06-28 02:07:34,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 307 transitions, 4539 flow [2024-06-28 02:07:34,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:07:34,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:07:34,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 02:07:34,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-28 02:07:34,944 INFO L175 Difference]: Start difference. First operand has 179 places, 264 transitions, 3807 flow. Second operand 8 states and 181 transitions. [2024-06-28 02:07:34,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 307 transitions, 4539 flow [2024-06-28 02:07:35,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 307 transitions, 4241 flow, removed 136 selfloop flow, removed 2 redundant places. [2024-06-28 02:07:35,231 INFO L231 Difference]: Finished difference. Result has 185 places, 264 transitions, 3662 flow [2024-06-28 02:07:35,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3533, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3662, PETRI_PLACES=185, PETRI_TRANSITIONS=264} [2024-06-28 02:07:35,231 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 135 predicate places. [2024-06-28 02:07:35,232 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 264 transitions, 3662 flow [2024-06-28 02:07:35,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:35,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:35,232 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] [2024-06-28 02:07:35,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:07:35,232 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)] === [2024-06-28 02:07:35,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:35,232 INFO L85 PathProgramCache]: Analyzing trace with hash -540343855, now seen corresponding path program 7 times [2024-06-28 02:07:35,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:35,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633511054] [2024-06-28 02:07:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:35,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:38,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:38,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633511054] [2024-06-28 02:07:38,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633511054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:38,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:38,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:38,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38926928] [2024-06-28 02:07:38,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:38,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:38,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:38,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:38,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:07:38,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 264 transitions, 3662 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:38,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:38,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:07:38,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:41,002 INFO L124 PetriNetUnfolderBase]: 6240/9408 cut-off events. [2024-06-28 02:07:41,002 INFO L125 PetriNetUnfolderBase]: For 132603/132603 co-relation queries the response was YES. [2024-06-28 02:07:41,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54442 conditions, 9408 events. 6240/9408 cut-off events. For 132603/132603 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 54882 event pairs, 1435 based on Foata normal form. 4/9405 useless extension candidates. Maximal degree in co-relation 54353. Up to 7254 conditions per place. [2024-06-28 02:07:41,099 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 204 selfloop transitions, 118 changer transitions 0/328 dead transitions. [2024-06-28 02:07:41,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 328 transitions, 4588 flow [2024-06-28 02:07:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:07:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:07:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2024-06-28 02:07:41,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043478260869565 [2024-06-28 02:07:41,101 INFO L175 Difference]: Start difference. First operand has 185 places, 264 transitions, 3662 flow. Second operand 10 states and 232 transitions. [2024-06-28 02:07:41,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 328 transitions, 4588 flow [2024-06-28 02:07:41,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 328 transitions, 4395 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 02:07:41,406 INFO L231 Difference]: Finished difference. Result has 187 places, 268 transitions, 3794 flow [2024-06-28 02:07:41,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3469, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3794, PETRI_PLACES=187, PETRI_TRANSITIONS=268} [2024-06-28 02:07:41,407 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 137 predicate places. [2024-06-28 02:07:41,407 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 268 transitions, 3794 flow [2024-06-28 02:07:41,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:41,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:41,408 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] [2024-06-28 02:07:41,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:07:41,408 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)] === [2024-06-28 02:07:41,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:41,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1803614075, now seen corresponding path program 8 times [2024-06-28 02:07:41,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:41,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444473036] [2024-06-28 02:07:41,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:41,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:44,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:44,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444473036] [2024-06-28 02:07:44,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444473036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:44,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:44,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:07:44,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839967359] [2024-06-28 02:07:44,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:44,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:07:44,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:44,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:07:44,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:07:44,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:07:44,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 268 transitions, 3794 flow. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:44,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:44,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:07:44,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:47,320 INFO L124 PetriNetUnfolderBase]: 6216/9376 cut-off events. [2024-06-28 02:07:47,320 INFO L125 PetriNetUnfolderBase]: For 134725/134725 co-relation queries the response was YES. [2024-06-28 02:07:47,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54511 conditions, 9376 events. 6216/9376 cut-off events. For 134725/134725 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 54677 event pairs, 1399 based on Foata normal form. 8/9377 useless extension candidates. Maximal degree in co-relation 54423. Up to 7238 conditions per place. [2024-06-28 02:07:47,400 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 209 selfloop transitions, 120 changer transitions 0/335 dead transitions. [2024-06-28 02:07:47,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 335 transitions, 4610 flow [2024-06-28 02:07:47,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:07:47,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:07:47,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 252 transitions. [2024-06-28 02:07:47,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980237154150198 [2024-06-28 02:07:47,402 INFO L175 Difference]: Start difference. First operand has 187 places, 268 transitions, 3794 flow. Second operand 11 states and 252 transitions. [2024-06-28 02:07:47,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 335 transitions, 4610 flow [2024-06-28 02:07:47,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 335 transitions, 4227 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-28 02:07:47,713 INFO L231 Difference]: Finished difference. Result has 190 places, 268 transitions, 3662 flow [2024-06-28 02:07:47,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3411, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3662, PETRI_PLACES=190, PETRI_TRANSITIONS=268} [2024-06-28 02:07:47,714 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 140 predicate places. [2024-06-28 02:07:47,714 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 268 transitions, 3662 flow [2024-06-28 02:07:47,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:47,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:47,715 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] [2024-06-28 02:07:47,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:07:47,715 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)] === [2024-06-28 02:07:47,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash -545675049, now seen corresponding path program 2 times [2024-06-28 02:07:47,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:47,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738735374] [2024-06-28 02:07:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:47,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:52,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:52,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738735374] [2024-06-28 02:07:52,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738735374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:52,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:52,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:07:52,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760272903] [2024-06-28 02:07:52,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:52,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:07:52,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:52,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:07:52,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:07:52,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:07:52,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 268 transitions, 3662 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:52,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:52,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:07:52,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:07:54,794 INFO L124 PetriNetUnfolderBase]: 6428/9817 cut-off events. [2024-06-28 02:07:54,794 INFO L125 PetriNetUnfolderBase]: For 139866/139866 co-relation queries the response was YES. [2024-06-28 02:07:54,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55795 conditions, 9817 events. 6428/9817 cut-off events. For 139866/139866 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 59053 event pairs, 1618 based on Foata normal form. 12/9822 useless extension candidates. Maximal degree in co-relation 55706. Up to 8342 conditions per place. [2024-06-28 02:07:54,890 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 246 selfloop transitions, 66 changer transitions 0/318 dead transitions. [2024-06-28 02:07:54,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 318 transitions, 4498 flow [2024-06-28 02:07:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:07:54,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:07:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 02:07:54,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:07:54,892 INFO L175 Difference]: Start difference. First operand has 190 places, 268 transitions, 3662 flow. Second operand 8 states and 184 transitions. [2024-06-28 02:07:54,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 318 transitions, 4498 flow [2024-06-28 02:07:55,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 318 transitions, 4206 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 02:07:55,165 INFO L231 Difference]: Finished difference. Result has 188 places, 269 transitions, 3528 flow [2024-06-28 02:07:55,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3370, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3528, PETRI_PLACES=188, PETRI_TRANSITIONS=269} [2024-06-28 02:07:55,166 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 138 predicate places. [2024-06-28 02:07:55,166 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 269 transitions, 3528 flow [2024-06-28 02:07:55,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:55,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:07:55,166 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] [2024-06-28 02:07:55,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:07:55,167 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)] === [2024-06-28 02:07:55,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:07:55,167 INFO L85 PathProgramCache]: Analyzing trace with hash -481005629, now seen corresponding path program 3 times [2024-06-28 02:07:55,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:07:55,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215811907] [2024-06-28 02:07:55,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:07:55,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:07:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:07:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:07:59,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:07:59,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215811907] [2024-06-28 02:07:59,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215811907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:07:59,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:07:59,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:07:59,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600195477] [2024-06-28 02:07:59,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:07:59,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:07:59,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:07:59,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:07:59,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:07:59,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:07:59,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 269 transitions, 3528 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:07:59,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:07:59,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:07:59,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:01,880 INFO L124 PetriNetUnfolderBase]: 6478/9861 cut-off events. [2024-06-28 02:08:01,880 INFO L125 PetriNetUnfolderBase]: For 136917/136917 co-relation queries the response was YES. [2024-06-28 02:08:01,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55166 conditions, 9861 events. 6478/9861 cut-off events. For 136917/136917 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 58995 event pairs, 1601 based on Foata normal form. 8/9862 useless extension candidates. Maximal degree in co-relation 55076. Up to 7930 conditions per place. [2024-06-28 02:08:01,967 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 247 selfloop transitions, 69 changer transitions 0/322 dead transitions. [2024-06-28 02:08:01,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 322 transitions, 4432 flow [2024-06-28 02:08:01,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:08:01,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:08:01,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 02:08:01,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-28 02:08:01,968 INFO L175 Difference]: Start difference. First operand has 188 places, 269 transitions, 3528 flow. Second operand 8 states and 185 transitions. [2024-06-28 02:08:01,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 322 transitions, 4432 flow [2024-06-28 02:08:02,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 322 transitions, 4298 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 02:08:02,235 INFO L231 Difference]: Finished difference. Result has 190 places, 270 transitions, 3558 flow [2024-06-28 02:08:02,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3394, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3558, PETRI_PLACES=190, PETRI_TRANSITIONS=270} [2024-06-28 02:08:02,236 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 140 predicate places. [2024-06-28 02:08:02,236 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 270 transitions, 3558 flow [2024-06-28 02:08:02,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:02,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:02,236 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] [2024-06-28 02:08:02,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:08:02,237 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)] === [2024-06-28 02:08:02,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:02,237 INFO L85 PathProgramCache]: Analyzing trace with hash 626249705, now seen corresponding path program 1 times [2024-06-28 02:08:02,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:02,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814125553] [2024-06-28 02:08:02,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:02,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:05,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:05,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814125553] [2024-06-28 02:08:05,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814125553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:05,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:05,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:05,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238193621] [2024-06-28 02:08:05,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:05,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:05,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:05,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:05,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:05,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:08:05,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 270 transitions, 3558 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:05,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:05,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:08:05,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:08,637 INFO L124 PetriNetUnfolderBase]: 6768/10231 cut-off events. [2024-06-28 02:08:08,637 INFO L125 PetriNetUnfolderBase]: For 154121/154123 co-relation queries the response was YES. [2024-06-28 02:08:08,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57169 conditions, 10231 events. 6768/10231 cut-off events. For 154121/154123 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 61311 event pairs, 2672 based on Foata normal form. 8/10238 useless extension candidates. Maximal degree in co-relation 57078. Up to 8558 conditions per place. [2024-06-28 02:08:08,728 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 308 selfloop transitions, 36 changer transitions 0/350 dead transitions. [2024-06-28 02:08:08,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 350 transitions, 4756 flow [2024-06-28 02:08:08,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:08:08,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:08:08,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:08:08,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-28 02:08:08,731 INFO L175 Difference]: Start difference. First operand has 190 places, 270 transitions, 3558 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:08:08,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 350 transitions, 4756 flow [2024-06-28 02:08:08,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 350 transitions, 4612 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:08:08,996 INFO L231 Difference]: Finished difference. Result has 194 places, 276 transitions, 3575 flow [2024-06-28 02:08:08,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3414, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3575, PETRI_PLACES=194, PETRI_TRANSITIONS=276} [2024-06-28 02:08:08,996 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 144 predicate places. [2024-06-28 02:08:08,996 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 276 transitions, 3575 flow [2024-06-28 02:08:08,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:08,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:08,997 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] [2024-06-28 02:08:08,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:08:08,997 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)] === [2024-06-28 02:08:08,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:08,997 INFO L85 PathProgramCache]: Analyzing trace with hash -893666771, now seen corresponding path program 2 times [2024-06-28 02:08:08,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:08,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880045801] [2024-06-28 02:08:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:08,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:12,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:12,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880045801] [2024-06-28 02:08:12,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880045801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:12,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:12,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:12,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010895056] [2024-06-28 02:08:12,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:12,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:12,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:12,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:12,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:08:12,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 276 transitions, 3575 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:12,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:12,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:08:12,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:15,476 INFO L124 PetriNetUnfolderBase]: 6980/10560 cut-off events. [2024-06-28 02:08:15,477 INFO L125 PetriNetUnfolderBase]: For 160001/160003 co-relation queries the response was YES. [2024-06-28 02:08:15,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58707 conditions, 10560 events. 6980/10560 cut-off events. For 160001/160003 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 63561 event pairs, 2739 based on Foata normal form. 12/10571 useless extension candidates. Maximal degree in co-relation 58613. Up to 9304 conditions per place. [2024-06-28 02:08:15,586 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 298 selfloop transitions, 34 changer transitions 0/338 dead transitions. [2024-06-28 02:08:15,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 338 transitions, 4524 flow [2024-06-28 02:08:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:08:15,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:08:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:08:15,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-28 02:08:15,588 INFO L175 Difference]: Start difference. First operand has 194 places, 276 transitions, 3575 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:08:15,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 338 transitions, 4524 flow [2024-06-28 02:08:15,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 338 transitions, 4483 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 02:08:15,883 INFO L231 Difference]: Finished difference. Result has 199 places, 277 transitions, 3618 flow [2024-06-28 02:08:15,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3534, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3618, PETRI_PLACES=199, PETRI_TRANSITIONS=277} [2024-06-28 02:08:15,883 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 149 predicate places. [2024-06-28 02:08:15,884 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 277 transitions, 3618 flow [2024-06-28 02:08:15,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:15,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:15,884 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] [2024-06-28 02:08:15,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:08:15,884 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)] === [2024-06-28 02:08:15,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:15,885 INFO L85 PathProgramCache]: Analyzing trace with hash -893670491, now seen corresponding path program 3 times [2024-06-28 02:08:15,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:15,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300904484] [2024-06-28 02:08:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:15,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:20,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:20,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300904484] [2024-06-28 02:08:20,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300904484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:20,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:20,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:08:20,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626852763] [2024-06-28 02:08:20,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:20,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:08:20,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:20,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:08:20,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:08:20,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:08:20,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 277 transitions, 3618 flow. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:20,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:20,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:08:20,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:22,658 INFO L124 PetriNetUnfolderBase]: 7116/10756 cut-off events. [2024-06-28 02:08:22,659 INFO L125 PetriNetUnfolderBase]: For 163934/163936 co-relation queries the response was YES. [2024-06-28 02:08:22,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60397 conditions, 10756 events. 7116/10756 cut-off events. For 163934/163936 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 64828 event pairs, 2730 based on Foata normal form. 8/10763 useless extension candidates. Maximal degree in co-relation 60301. Up to 9322 conditions per place. [2024-06-28 02:08:22,769 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 302 selfloop transitions, 36 changer transitions 0/344 dead transitions. [2024-06-28 02:08:22,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 344 transitions, 4623 flow [2024-06-28 02:08:22,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:08:22,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:08:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:08:22,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 02:08:22,771 INFO L175 Difference]: Start difference. First operand has 199 places, 277 transitions, 3618 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:08:22,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 344 transitions, 4623 flow [2024-06-28 02:08:23,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 344 transitions, 4556 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 02:08:23,140 INFO L231 Difference]: Finished difference. Result has 202 places, 280 transitions, 3668 flow [2024-06-28 02:08:23,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3551, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3668, PETRI_PLACES=202, PETRI_TRANSITIONS=280} [2024-06-28 02:08:23,141 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 152 predicate places. [2024-06-28 02:08:23,141 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 280 transitions, 3668 flow [2024-06-28 02:08:23,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:23,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:23,141 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] [2024-06-28 02:08:23,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:08:23,142 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)] === [2024-06-28 02:08:23,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:23,142 INFO L85 PathProgramCache]: Analyzing trace with hash 887581009, now seen corresponding path program 4 times [2024-06-28 02:08:23,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:23,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175774779] [2024-06-28 02:08:23,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:23,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:27,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:27,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175774779] [2024-06-28 02:08:27,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175774779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:27,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:27,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:27,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256974498] [2024-06-28 02:08:27,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:27,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:27,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:27,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:27,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:27,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:08:27,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 280 transitions, 3668 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:27,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:27,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:08:27,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:29,886 INFO L124 PetriNetUnfolderBase]: 7328/11227 cut-off events. [2024-06-28 02:08:29,887 INFO L125 PetriNetUnfolderBase]: For 175190/175192 co-relation queries the response was YES. [2024-06-28 02:08:29,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62672 conditions, 11227 events. 7328/11227 cut-off events. For 175190/175192 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 69603 event pairs, 2996 based on Foata normal form. 12/11238 useless extension candidates. Maximal degree in co-relation 62574. Up to 10014 conditions per place. [2024-06-28 02:08:29,994 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 299 selfloop transitions, 28 changer transitions 0/333 dead transitions. [2024-06-28 02:08:29,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 333 transitions, 4521 flow [2024-06-28 02:08:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:08:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:08:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-28 02:08:29,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46618357487922707 [2024-06-28 02:08:29,996 INFO L175 Difference]: Start difference. First operand has 202 places, 280 transitions, 3668 flow. Second operand 9 states and 193 transitions. [2024-06-28 02:08:29,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 333 transitions, 4521 flow [2024-06-28 02:08:30,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 333 transitions, 4476 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:08:30,350 INFO L231 Difference]: Finished difference. Result has 208 places, 283 transitions, 3743 flow [2024-06-28 02:08:30,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3623, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3743, PETRI_PLACES=208, PETRI_TRANSITIONS=283} [2024-06-28 02:08:30,351 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 158 predicate places. [2024-06-28 02:08:30,351 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 283 transitions, 3743 flow [2024-06-28 02:08:30,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:30,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:30,351 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] [2024-06-28 02:08:30,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:08:30,352 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)] === [2024-06-28 02:08:30,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash -688073849, now seen corresponding path program 5 times [2024-06-28 02:08:30,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:30,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741878469] [2024-06-28 02:08:30,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:30,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:34,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:34,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741878469] [2024-06-28 02:08:34,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741878469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:34,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:34,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:08:34,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511972793] [2024-06-28 02:08:34,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:34,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:08:34,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:08:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:08:34,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:08:34,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 283 transitions, 3743 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:34,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:34,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:08:34,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:37,204 INFO L124 PetriNetUnfolderBase]: 7508/11491 cut-off events. [2024-06-28 02:08:37,204 INFO L125 PetriNetUnfolderBase]: For 181347/181349 co-relation queries the response was YES. [2024-06-28 02:08:37,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64875 conditions, 11491 events. 7508/11491 cut-off events. For 181347/181349 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 71318 event pairs, 2993 based on Foata normal form. 8/11498 useless extension candidates. Maximal degree in co-relation 64774. Up to 9850 conditions per place. [2024-06-28 02:08:37,326 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 304 selfloop transitions, 32 changer transitions 0/342 dead transitions. [2024-06-28 02:08:37,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 342 transitions, 4774 flow [2024-06-28 02:08:37,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:08:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:08:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 02:08:37,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:08:37,328 INFO L175 Difference]: Start difference. First operand has 208 places, 283 transitions, 3743 flow. Second operand 8 states and 184 transitions. [2024-06-28 02:08:37,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 342 transitions, 4774 flow [2024-06-28 02:08:37,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 342 transitions, 4696 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:08:37,736 INFO L231 Difference]: Finished difference. Result has 211 places, 289 transitions, 3864 flow [2024-06-28 02:08:37,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3665, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3864, PETRI_PLACES=211, PETRI_TRANSITIONS=289} [2024-06-28 02:08:37,737 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 161 predicate places. [2024-06-28 02:08:37,737 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 289 transitions, 3864 flow [2024-06-28 02:08:37,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:37,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:37,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:08:37,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:08:37,737 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)] === [2024-06-28 02:08:37,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:37,737 INFO L85 PathProgramCache]: Analyzing trace with hash -540128157, now seen corresponding path program 1 times [2024-06-28 02:08:37,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:37,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467057671] [2024-06-28 02:08:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:37,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:41,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:41,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467057671] [2024-06-28 02:08:41,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467057671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:41,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:41,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:41,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394493361] [2024-06-28 02:08:41,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:41,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:41,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:41,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:41,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:41,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:08:41,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 289 transitions, 3864 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:41,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:41,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:08:41,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:44,970 INFO L124 PetriNetUnfolderBase]: 7480/11483 cut-off events. [2024-06-28 02:08:44,971 INFO L125 PetriNetUnfolderBase]: For 182570/182572 co-relation queries the response was YES. [2024-06-28 02:08:45,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64743 conditions, 11483 events. 7480/11483 cut-off events. For 182570/182572 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 71605 event pairs, 3030 based on Foata normal form. 12/11494 useless extension candidates. Maximal degree in co-relation 64640. Up to 10242 conditions per place. [2024-06-28 02:08:45,104 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 320 selfloop transitions, 28 changer transitions 0/354 dead transitions. [2024-06-28 02:08:45,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 354 transitions, 4760 flow [2024-06-28 02:08:45,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:08:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:08:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2024-06-28 02:08:45,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48043478260869565 [2024-06-28 02:08:45,105 INFO L175 Difference]: Start difference. First operand has 211 places, 289 transitions, 3864 flow. Second operand 10 states and 221 transitions. [2024-06-28 02:08:45,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 354 transitions, 4760 flow [2024-06-28 02:08:45,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 354 transitions, 4642 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 02:08:45,575 INFO L231 Difference]: Finished difference. Result has 216 places, 290 transitions, 3828 flow [2024-06-28 02:08:45,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3752, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3828, PETRI_PLACES=216, PETRI_TRANSITIONS=290} [2024-06-28 02:08:45,575 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 166 predicate places. [2024-06-28 02:08:45,575 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 290 transitions, 3828 flow [2024-06-28 02:08:45,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:45,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:45,576 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] [2024-06-28 02:08:45,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:08:45,576 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)] === [2024-06-28 02:08:45,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:45,576 INFO L85 PathProgramCache]: Analyzing trace with hash -480999677, now seen corresponding path program 2 times [2024-06-28 02:08:45,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:45,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171880398] [2024-06-28 02:08:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:45,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:49,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:49,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171880398] [2024-06-28 02:08:49,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171880398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:49,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:49,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:49,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808308411] [2024-06-28 02:08:49,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:49,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:49,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:49,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:49,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:49,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:08:49,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 290 transitions, 3828 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:49,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:49,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:08:49,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:51,991 INFO L124 PetriNetUnfolderBase]: 7498/11505 cut-off events. [2024-06-28 02:08:51,991 INFO L125 PetriNetUnfolderBase]: For 171486/171488 co-relation queries the response was YES. [2024-06-28 02:08:52,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64118 conditions, 11505 events. 7498/11505 cut-off events. For 171486/171488 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 71520 event pairs, 2904 based on Foata normal form. 8/11512 useless extension candidates. Maximal degree in co-relation 64014. Up to 9868 conditions per place. [2024-06-28 02:08:52,127 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 320 selfloop transitions, 35 changer transitions 0/361 dead transitions. [2024-06-28 02:08:52,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 361 transitions, 4834 flow [2024-06-28 02:08:52,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:08:52,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:08:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 222 transitions. [2024-06-28 02:08:52,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826086956521739 [2024-06-28 02:08:52,373 INFO L175 Difference]: Start difference. First operand has 216 places, 290 transitions, 3828 flow. Second operand 10 states and 222 transitions. [2024-06-28 02:08:52,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 361 transitions, 4834 flow [2024-06-28 02:08:52,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 361 transitions, 4776 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 02:08:52,694 INFO L231 Difference]: Finished difference. Result has 219 places, 295 transitions, 3955 flow [2024-06-28 02:08:52,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3770, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3955, PETRI_PLACES=219, PETRI_TRANSITIONS=295} [2024-06-28 02:08:52,694 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 169 predicate places. [2024-06-28 02:08:52,694 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 295 transitions, 3955 flow [2024-06-28 02:08:52,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:52,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:52,695 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] [2024-06-28 02:08:52,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:08:52,695 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:08:52,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:52,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1603905505, now seen corresponding path program 1 times [2024-06-28 02:08:52,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:52,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490424720] [2024-06-28 02:08:52,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:52,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:52,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:52,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490424720] [2024-06-28 02:08:52,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490424720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:52,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:52,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:08:52,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183405364] [2024-06-28 02:08:52,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:52,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:08:52,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:52,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:08:52,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:08:52,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 02:08:52,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 295 transitions, 3955 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:52,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:52,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 02:08:52,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:08:54,323 INFO L124 PetriNetUnfolderBase]: 5140/8257 cut-off events. [2024-06-28 02:08:54,323 INFO L125 PetriNetUnfolderBase]: For 160413/160800 co-relation queries the response was YES. [2024-06-28 02:08:54,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45870 conditions, 8257 events. 5140/8257 cut-off events. For 160413/160800 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 53283 event pairs, 966 based on Foata normal form. 504/8598 useless extension candidates. Maximal degree in co-relation 45765. Up to 3301 conditions per place. [2024-06-28 02:08:54,414 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 153 selfloop transitions, 76 changer transitions 0/288 dead transitions. [2024-06-28 02:08:54,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 288 transitions, 4238 flow [2024-06-28 02:08:54,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:08:54,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:08:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-06-28 02:08:54,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195652173913043 [2024-06-28 02:08:54,415 INFO L175 Difference]: Start difference. First operand has 219 places, 295 transitions, 3955 flow. Second operand 4 states and 114 transitions. [2024-06-28 02:08:54,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 288 transitions, 4238 flow [2024-06-28 02:08:54,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 288 transitions, 3809 flow, removed 78 selfloop flow, removed 16 redundant places. [2024-06-28 02:08:54,813 INFO L231 Difference]: Finished difference. Result has 208 places, 248 transitions, 3252 flow [2024-06-28 02:08:54,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2874, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3252, PETRI_PLACES=208, PETRI_TRANSITIONS=248} [2024-06-28 02:08:54,814 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 158 predicate places. [2024-06-28 02:08:54,814 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 248 transitions, 3252 flow [2024-06-28 02:08:54,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:54,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:08:54,814 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] [2024-06-28 02:08:54,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:08:54,814 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)] === [2024-06-28 02:08:54,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:08:54,815 INFO L85 PathProgramCache]: Analyzing trace with hash -828282356, now seen corresponding path program 1 times [2024-06-28 02:08:54,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:08:54,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114662961] [2024-06-28 02:08:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:08:54,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:08:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:08:58,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:08:58,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:08:58,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114662961] [2024-06-28 02:08:58,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114662961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:08:58,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:08:58,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:08:58,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000752622] [2024-06-28 02:08:58,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:08:58,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:08:58,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:08:58,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:08:58,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:08:58,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:08:58,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 248 transitions, 3252 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:08:58,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:08:58,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:08:58,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:02,133 INFO L124 PetriNetUnfolderBase]: 6243/9641 cut-off events. [2024-06-28 02:09:02,134 INFO L125 PetriNetUnfolderBase]: For 173307/173309 co-relation queries the response was YES. [2024-06-28 02:09:02,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55942 conditions, 9641 events. 6243/9641 cut-off events. For 173307/173309 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 58270 event pairs, 2103 based on Foata normal form. 4/9639 useless extension candidates. Maximal degree in co-relation 55841. Up to 7979 conditions per place. [2024-06-28 02:09:02,223 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 176 selfloop transitions, 117 changer transitions 9/308 dead transitions. [2024-06-28 02:09:02,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 308 transitions, 4368 flow [2024-06-28 02:09:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:09:02,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:09:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-06-28 02:09:02,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 02:09:02,224 INFO L175 Difference]: Start difference. First operand has 208 places, 248 transitions, 3252 flow. Second operand 11 states and 230 transitions. [2024-06-28 02:09:02,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 308 transitions, 4368 flow [2024-06-28 02:09:02,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 308 transitions, 4328 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 02:09:02,625 INFO L231 Difference]: Finished difference. Result has 217 places, 256 transitions, 3676 flow [2024-06-28 02:09:02,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3676, PETRI_PLACES=217, PETRI_TRANSITIONS=256} [2024-06-28 02:09:02,626 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 167 predicate places. [2024-06-28 02:09:02,626 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 256 transitions, 3676 flow [2024-06-28 02:09:02,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:02,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:02,626 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] [2024-06-28 02:09:02,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:09:02,626 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)] === [2024-06-28 02:09:02,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:02,627 INFO L85 PathProgramCache]: Analyzing trace with hash -582874924, now seen corresponding path program 1 times [2024-06-28 02:09:02,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:02,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591984736] [2024-06-28 02:09:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:02,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:06,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:06,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591984736] [2024-06-28 02:09:06,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591984736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:06,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:06,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:06,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650553373] [2024-06-28 02:09:06,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:06,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:06,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:06,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:06,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:06,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:09:06,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 256 transitions, 3676 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:06,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:06,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:09:06,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:09,147 INFO L124 PetriNetUnfolderBase]: 5680/8757 cut-off events. [2024-06-28 02:09:09,147 INFO L125 PetriNetUnfolderBase]: For 163545/163547 co-relation queries the response was YES. [2024-06-28 02:09:09,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49698 conditions, 8757 events. 5680/8757 cut-off events. For 163545/163547 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 51385 event pairs, 1898 based on Foata normal form. 8/8759 useless extension candidates. Maximal degree in co-relation 49594. Up to 7348 conditions per place. [2024-06-28 02:09:09,235 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 241 selfloop transitions, 59 changer transitions 0/306 dead transitions. [2024-06-28 02:09:09,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 306 transitions, 4638 flow [2024-06-28 02:09:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:09:09,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:09:09,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 02:09:09,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-28 02:09:09,237 INFO L175 Difference]: Start difference. First operand has 217 places, 256 transitions, 3676 flow. Second operand 8 states and 181 transitions. [2024-06-28 02:09:09,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 306 transitions, 4638 flow [2024-06-28 02:09:09,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 306 transitions, 4331 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-28 02:09:09,632 INFO L231 Difference]: Finished difference. Result has 218 places, 257 transitions, 3522 flow [2024-06-28 02:09:09,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3522, PETRI_PLACES=218, PETRI_TRANSITIONS=257} [2024-06-28 02:09:09,632 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 168 predicate places. [2024-06-28 02:09:09,632 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 257 transitions, 3522 flow [2024-06-28 02:09:09,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:09,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:09,633 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] [2024-06-28 02:09:09,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:09:09,633 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)] === [2024-06-28 02:09:09,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:09,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1402486734, now seen corresponding path program 2 times [2024-06-28 02:09:09,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:09,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466190982] [2024-06-28 02:09:09,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:09,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:13,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:13,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466190982] [2024-06-28 02:09:13,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466190982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:13,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:13,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:13,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166666568] [2024-06-28 02:09:13,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:13,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:13,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:13,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:13,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:13,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:09:13,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 257 transitions, 3522 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:13,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:13,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:09:13,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:15,785 INFO L124 PetriNetUnfolderBase]: 5662/8719 cut-off events. [2024-06-28 02:09:15,785 INFO L125 PetriNetUnfolderBase]: For 154743/154745 co-relation queries the response was YES. [2024-06-28 02:09:15,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48785 conditions, 8719 events. 5662/8719 cut-off events. For 154743/154745 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 51091 event pairs, 2120 based on Foata normal form. 8/8721 useless extension candidates. Maximal degree in co-relation 48680. Up to 7596 conditions per place. [2024-06-28 02:09:15,869 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 231 selfloop transitions, 58 changer transitions 0/295 dead transitions. [2024-06-28 02:09:15,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 295 transitions, 4294 flow [2024-06-28 02:09:15,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:09:15,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:09:15,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-28 02:09:15,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46467391304347827 [2024-06-28 02:09:15,870 INFO L175 Difference]: Start difference. First operand has 218 places, 257 transitions, 3522 flow. Second operand 8 states and 171 transitions. [2024-06-28 02:09:15,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 295 transitions, 4294 flow [2024-06-28 02:09:16,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 295 transitions, 4191 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:09:16,227 INFO L231 Difference]: Finished difference. Result has 221 places, 257 transitions, 3539 flow [2024-06-28 02:09:16,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3419, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3539, PETRI_PLACES=221, PETRI_TRANSITIONS=257} [2024-06-28 02:09:16,228 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 171 predicate places. [2024-06-28 02:09:16,228 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 257 transitions, 3539 flow [2024-06-28 02:09:16,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:16,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:16,228 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] [2024-06-28 02:09:16,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:09:16,228 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)] === [2024-06-28 02:09:16,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:16,229 INFO L85 PathProgramCache]: Analyzing trace with hash -494216908, now seen corresponding path program 2 times [2024-06-28 02:09:16,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:16,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833497033] [2024-06-28 02:09:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:16,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:19,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:19,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833497033] [2024-06-28 02:09:19,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833497033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:19,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:19,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:19,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309199783] [2024-06-28 02:09:19,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:19,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:19,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:19,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:19,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:19,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:09:19,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 257 transitions, 3539 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:19,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:19,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:09:19,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:21,929 INFO L124 PetriNetUnfolderBase]: 5730/8831 cut-off events. [2024-06-28 02:09:21,930 INFO L125 PetriNetUnfolderBase]: For 149839/149841 co-relation queries the response was YES. [2024-06-28 02:09:21,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48945 conditions, 8831 events. 5730/8831 cut-off events. For 149839/149841 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 51818 event pairs, 2034 based on Foata normal form. 4/8829 useless extension candidates. Maximal degree in co-relation 48839. Up to 7717 conditions per place. [2024-06-28 02:09:22,028 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 191 selfloop transitions, 96 changer transitions 0/293 dead transitions. [2024-06-28 02:09:22,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 293 transitions, 4311 flow [2024-06-28 02:09:22,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:09:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:09:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 02:09:22,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592391304347826 [2024-06-28 02:09:22,030 INFO L175 Difference]: Start difference. First operand has 221 places, 257 transitions, 3539 flow. Second operand 8 states and 169 transitions. [2024-06-28 02:09:22,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 293 transitions, 4311 flow [2024-06-28 02:09:22,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 293 transitions, 4142 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 02:09:22,421 INFO L231 Difference]: Finished difference. Result has 224 places, 266 transitions, 3796 flow [2024-06-28 02:09:22,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3370, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3796, PETRI_PLACES=224, PETRI_TRANSITIONS=266} [2024-06-28 02:09:22,421 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 174 predicate places. [2024-06-28 02:09:22,421 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 266 transitions, 3796 flow [2024-06-28 02:09:22,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:22,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:22,421 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] [2024-06-28 02:09:22,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:09:22,422 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)] === [2024-06-28 02:09:22,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1440423068, now seen corresponding path program 3 times [2024-06-28 02:09:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:22,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145807695] [2024-06-28 02:09:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:22,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:26,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:26,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145807695] [2024-06-28 02:09:26,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145807695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:26,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:26,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:26,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472279549] [2024-06-28 02:09:26,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:26,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:26,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:26,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:26,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:26,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:09:26,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 266 transitions, 3796 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:26,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:26,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:09:26,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:29,610 INFO L124 PetriNetUnfolderBase]: 5806/8950 cut-off events. [2024-06-28 02:09:29,611 INFO L125 PetriNetUnfolderBase]: For 156065/156067 co-relation queries the response was YES. [2024-06-28 02:09:29,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50050 conditions, 8950 events. 5806/8950 cut-off events. For 156065/156067 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 52594 event pairs, 2044 based on Foata normal form. 4/8948 useless extension candidates. Maximal degree in co-relation 49941. Up to 7432 conditions per place. [2024-06-28 02:09:29,704 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 181 selfloop transitions, 128 changer transitions 0/315 dead transitions. [2024-06-28 02:09:29,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 315 transitions, 4772 flow [2024-06-28 02:09:29,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:09:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:09:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2024-06-28 02:09:29,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311594202898551 [2024-06-28 02:09:29,705 INFO L175 Difference]: Start difference. First operand has 224 places, 266 transitions, 3796 flow. Second operand 12 states and 238 transitions. [2024-06-28 02:09:29,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 315 transitions, 4772 flow [2024-06-28 02:09:30,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 315 transitions, 4526 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 02:09:30,022 INFO L231 Difference]: Finished difference. Result has 229 places, 272 transitions, 3898 flow [2024-06-28 02:09:30,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3550, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3898, PETRI_PLACES=229, PETRI_TRANSITIONS=272} [2024-06-28 02:09:30,022 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 179 predicate places. [2024-06-28 02:09:30,022 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 272 transitions, 3898 flow [2024-06-28 02:09:30,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:30,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:30,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:09:30,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:09:30,023 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)] === [2024-06-28 02:09:30,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash 558149210, now seen corresponding path program 4 times [2024-06-28 02:09:30,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:30,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867391019] [2024-06-28 02:09:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:30,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:33,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:33,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:33,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867391019] [2024-06-28 02:09:33,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867391019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:33,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:33,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:33,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126260032] [2024-06-28 02:09:33,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:33,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:33,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:33,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:33,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:33,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:09:33,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 272 transitions, 3898 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:33,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:33,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:09:33,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:36,930 INFO L124 PetriNetUnfolderBase]: 5794/8934 cut-off events. [2024-06-28 02:09:36,930 INFO L125 PetriNetUnfolderBase]: For 156197/156199 co-relation queries the response was YES. [2024-06-28 02:09:36,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49745 conditions, 8934 events. 5794/8934 cut-off events. For 156197/156199 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 52523 event pairs, 2044 based on Foata normal form. 4/8932 useless extension candidates. Maximal degree in co-relation 49636. Up to 7424 conditions per place. [2024-06-28 02:09:37,026 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 175 selfloop transitions, 126 changer transitions 0/307 dead transitions. [2024-06-28 02:09:37,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 307 transitions, 4668 flow [2024-06-28 02:09:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:09:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:09:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-28 02:09:37,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434782608695652 [2024-06-28 02:09:37,028 INFO L175 Difference]: Start difference. First operand has 229 places, 272 transitions, 3898 flow. Second operand 10 states and 204 transitions. [2024-06-28 02:09:37,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 307 transitions, 4668 flow [2024-06-28 02:09:37,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 307 transitions, 4410 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 02:09:37,467 INFO L231 Difference]: Finished difference. Result has 231 places, 272 transitions, 3899 flow [2024-06-28 02:09:37,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3640, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3899, PETRI_PLACES=231, PETRI_TRANSITIONS=272} [2024-06-28 02:09:37,468 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 181 predicate places. [2024-06-28 02:09:37,468 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 272 transitions, 3899 flow [2024-06-28 02:09:37,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:37,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:37,468 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] [2024-06-28 02:09:37,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:09:37,468 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)] === [2024-06-28 02:09:37,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:37,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1825561914, now seen corresponding path program 5 times [2024-06-28 02:09:37,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:37,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269505941] [2024-06-28 02:09:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:37,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:40,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:40,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269505941] [2024-06-28 02:09:40,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269505941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:40,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:40,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:40,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801604079] [2024-06-28 02:09:40,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:40,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:40,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:40,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:40,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:40,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:09:40,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 272 transitions, 3899 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:40,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:40,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:09:40,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:43,570 INFO L124 PetriNetUnfolderBase]: 5886/9075 cut-off events. [2024-06-28 02:09:43,570 INFO L125 PetriNetUnfolderBase]: For 165869/165871 co-relation queries the response was YES. [2024-06-28 02:09:43,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50746 conditions, 9075 events. 5886/9075 cut-off events. For 165869/165871 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53482 event pairs, 2262 based on Foata normal form. 4/9073 useless extension candidates. Maximal degree in co-relation 50636. Up to 8049 conditions per place. [2024-06-28 02:09:43,673 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 219 selfloop transitions, 83 changer transitions 0/308 dead transitions. [2024-06-28 02:09:43,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 308 transitions, 4793 flow [2024-06-28 02:09:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:09:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:09:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-28 02:09:43,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4323671497584541 [2024-06-28 02:09:43,674 INFO L175 Difference]: Start difference. First operand has 231 places, 272 transitions, 3899 flow. Second operand 9 states and 179 transitions. [2024-06-28 02:09:43,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 308 transitions, 4793 flow [2024-06-28 02:09:44,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 308 transitions, 4523 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 02:09:44,161 INFO L231 Difference]: Finished difference. Result has 232 places, 281 transitions, 3960 flow [2024-06-28 02:09:44,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3647, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3960, PETRI_PLACES=232, PETRI_TRANSITIONS=281} [2024-06-28 02:09:44,161 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 182 predicate places. [2024-06-28 02:09:44,161 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 281 transitions, 3960 flow [2024-06-28 02:09:44,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:44,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:44,162 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, 1] [2024-06-28 02:09:44,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:09:44,162 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)] === [2024-06-28 02:09:44,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:44,162 INFO L85 PathProgramCache]: Analyzing trace with hash 839079514, now seen corresponding path program 6 times [2024-06-28 02:09:44,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:44,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133075292] [2024-06-28 02:09:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:44,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:47,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:47,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133075292] [2024-06-28 02:09:47,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133075292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:47,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:47,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:47,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266910160] [2024-06-28 02:09:47,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:47,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:47,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:47,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:47,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:47,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:09:47,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 281 transitions, 3960 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:47,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:47,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:09:47,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:50,454 INFO L124 PetriNetUnfolderBase]: 5918/9131 cut-off events. [2024-06-28 02:09:50,454 INFO L125 PetriNetUnfolderBase]: For 169545/169547 co-relation queries the response was YES. [2024-06-28 02:09:50,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50898 conditions, 9131 events. 5918/9131 cut-off events. For 169545/169547 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 53920 event pairs, 2255 based on Foata normal form. 4/9129 useless extension candidates. Maximal degree in co-relation 50786. Up to 8073 conditions per place. [2024-06-28 02:09:50,550 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 218 selfloop transitions, 87 changer transitions 0/311 dead transitions. [2024-06-28 02:09:50,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 311 transitions, 4779 flow [2024-06-28 02:09:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:09:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:09:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-28 02:09:50,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2024-06-28 02:09:50,551 INFO L175 Difference]: Start difference. First operand has 232 places, 281 transitions, 3960 flow. Second operand 9 states and 180 transitions. [2024-06-28 02:09:50,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 311 transitions, 4779 flow [2024-06-28 02:09:51,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 311 transitions, 4656 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:09:51,085 INFO L231 Difference]: Finished difference. Result has 236 places, 284 transitions, 4072 flow [2024-06-28 02:09:51,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3837, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4072, PETRI_PLACES=236, PETRI_TRANSITIONS=284} [2024-06-28 02:09:51,085 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 186 predicate places. [2024-06-28 02:09:51,085 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 284 transitions, 4072 flow [2024-06-28 02:09:51,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:51,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:51,085 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, 1] [2024-06-28 02:09:51,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:09:51,086 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:51,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:51,086 INFO L85 PathProgramCache]: Analyzing trace with hash -957274834, now seen corresponding path program 7 times [2024-06-28 02:09:51,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:51,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810557751] [2024-06-28 02:09:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:51,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:09:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:09:54,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:09:54,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810557751] [2024-06-28 02:09:54,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810557751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:09:54,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:09:54,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:09:54,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856830049] [2024-06-28 02:09:54,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:09:54,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:09:54,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:09:54,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:09:54,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:09:54,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:09:54,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 284 transitions, 4072 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:54,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:09:54,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:09:54,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:09:57,523 INFO L124 PetriNetUnfolderBase]: 5906/9115 cut-off events. [2024-06-28 02:09:57,523 INFO L125 PetriNetUnfolderBase]: For 168475/168477 co-relation queries the response was YES. [2024-06-28 02:09:57,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50965 conditions, 9115 events. 5906/9115 cut-off events. For 168475/168477 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 53845 event pairs, 2253 based on Foata normal form. 4/9113 useless extension candidates. Maximal degree in co-relation 50851. Up to 8065 conditions per place. [2024-06-28 02:09:57,618 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 220 selfloop transitions, 87 changer transitions 0/313 dead transitions. [2024-06-28 02:09:57,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 313 transitions, 4748 flow [2024-06-28 02:09:57,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:09:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:09:57,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 02:09:57,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4260869565217391 [2024-06-28 02:09:57,619 INFO L175 Difference]: Start difference. First operand has 236 places, 284 transitions, 4072 flow. Second operand 10 states and 196 transitions. [2024-06-28 02:09:57,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 313 transitions, 4748 flow [2024-06-28 02:09:58,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 313 transitions, 4570 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 02:09:58,144 INFO L231 Difference]: Finished difference. Result has 240 places, 284 transitions, 4074 flow [2024-06-28 02:09:58,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3894, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4074, PETRI_PLACES=240, PETRI_TRANSITIONS=284} [2024-06-28 02:09:58,145 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 190 predicate places. [2024-06-28 02:09:58,145 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 284 transitions, 4074 flow [2024-06-28 02:09:58,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:09:58,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:09:58,145 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, 1] [2024-06-28 02:09:58,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:09:58,145 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:09:58,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:09:58,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1985573284, now seen corresponding path program 8 times [2024-06-28 02:09:58,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:09:58,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052570911] [2024-06-28 02:09:58,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:09:58,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:09:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:01,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:01,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052570911] [2024-06-28 02:10:01,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052570911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:01,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:01,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:01,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663870534] [2024-06-28 02:10:01,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:01,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:01,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:01,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:01,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:01,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:10:01,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 284 transitions, 4074 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:01,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:01,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:10:01,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:04,507 INFO L124 PetriNetUnfolderBase]: 5938/9171 cut-off events. [2024-06-28 02:10:04,507 INFO L125 PetriNetUnfolderBase]: For 172880/172882 co-relation queries the response was YES. [2024-06-28 02:10:04,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51311 conditions, 9171 events. 5938/9171 cut-off events. For 172880/172882 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 54324 event pairs, 2135 based on Foata normal form. 4/9169 useless extension candidates. Maximal degree in co-relation 51196. Up to 7279 conditions per place. [2024-06-28 02:10:04,604 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 172 selfloop transitions, 143 changer transitions 0/321 dead transitions. [2024-06-28 02:10:04,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 321 transitions, 4949 flow [2024-06-28 02:10:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:10:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:10:04,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-28 02:10:04,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45410628019323673 [2024-06-28 02:10:04,605 INFO L175 Difference]: Start difference. First operand has 240 places, 284 transitions, 4074 flow. Second operand 9 states and 188 transitions. [2024-06-28 02:10:04,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 321 transitions, 4949 flow [2024-06-28 02:10:05,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 321 transitions, 4761 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 02:10:05,165 INFO L231 Difference]: Finished difference. Result has 241 places, 287 transitions, 4249 flow [2024-06-28 02:10:05,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3886, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4249, PETRI_PLACES=241, PETRI_TRANSITIONS=287} [2024-06-28 02:10:05,165 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 191 predicate places. [2024-06-28 02:10:05,165 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 287 transitions, 4249 flow [2024-06-28 02:10:05,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:05,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:05,166 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] [2024-06-28 02:10:05,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:10:05,166 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:05,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:05,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1024936630, now seen corresponding path program 9 times [2024-06-28 02:10:05,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:05,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241116742] [2024-06-28 02:10:05,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:05,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:08,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:08,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241116742] [2024-06-28 02:10:08,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241116742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:08,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:08,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:08,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474853813] [2024-06-28 02:10:08,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:08,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:08,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:08,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:08,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:08,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:10:08,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 287 transitions, 4249 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:08,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:08,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:10:08,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:11,455 INFO L124 PetriNetUnfolderBase]: 5970/9227 cut-off events. [2024-06-28 02:10:11,455 INFO L125 PetriNetUnfolderBase]: For 179790/179792 co-relation queries the response was YES. [2024-06-28 02:10:11,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52201 conditions, 9227 events. 5970/9227 cut-off events. For 179790/179792 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 54733 event pairs, 2245 based on Foata normal form. 4/9225 useless extension candidates. Maximal degree in co-relation 52085. Up to 7829 conditions per place. [2024-06-28 02:10:11,780 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 206 selfloop transitions, 116 changer transitions 0/328 dead transitions. [2024-06-28 02:10:11,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 328 transitions, 5254 flow [2024-06-28 02:10:11,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:10:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:10:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 232 transitions. [2024-06-28 02:10:11,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42028985507246375 [2024-06-28 02:10:11,781 INFO L175 Difference]: Start difference. First operand has 241 places, 287 transitions, 4249 flow. Second operand 12 states and 232 transitions. [2024-06-28 02:10:11,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 328 transitions, 5254 flow [2024-06-28 02:10:12,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 328 transitions, 4876 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 02:10:12,371 INFO L231 Difference]: Finished difference. Result has 246 places, 290 transitions, 4186 flow [2024-06-28 02:10:12,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3881, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4186, PETRI_PLACES=246, PETRI_TRANSITIONS=290} [2024-06-28 02:10:12,372 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 196 predicate places. [2024-06-28 02:10:12,372 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 290 transitions, 4186 flow [2024-06-28 02:10:12,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:12,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:12,373 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] [2024-06-28 02:10:12,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:10:12,373 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:12,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:12,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1466151564, now seen corresponding path program 10 times [2024-06-28 02:10:12,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:12,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699136592] [2024-06-28 02:10:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:12,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:16,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:16,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699136592] [2024-06-28 02:10:16,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699136592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:16,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:16,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:16,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880581087] [2024-06-28 02:10:16,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:16,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:16,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:16,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:16,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:16,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:10:16,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 290 transitions, 4186 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:16,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:16,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:10:16,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:18,915 INFO L124 PetriNetUnfolderBase]: 6002/9283 cut-off events. [2024-06-28 02:10:18,915 INFO L125 PetriNetUnfolderBase]: For 181028/181030 co-relation queries the response was YES. [2024-06-28 02:10:18,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52230 conditions, 9283 events. 6002/9283 cut-off events. For 181028/181030 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 55315 event pairs, 2402 based on Foata normal form. 4/9281 useless extension candidates. Maximal degree in co-relation 52114. Up to 8437 conditions per place. [2024-06-28 02:10:19,022 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 262 selfloop transitions, 58 changer transitions 0/326 dead transitions. [2024-06-28 02:10:19,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 326 transitions, 5058 flow [2024-06-28 02:10:19,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:10:19,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:10:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-28 02:10:19,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 02:10:19,023 INFO L175 Difference]: Start difference. First operand has 246 places, 290 transitions, 4186 flow. Second operand 11 states and 207 transitions. [2024-06-28 02:10:19,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 326 transitions, 5058 flow [2024-06-28 02:10:19,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 326 transitions, 4578 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-28 02:10:19,737 INFO L231 Difference]: Finished difference. Result has 246 places, 293 transitions, 3886 flow [2024-06-28 02:10:19,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3718, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3886, PETRI_PLACES=246, PETRI_TRANSITIONS=293} [2024-06-28 02:10:19,737 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 196 predicate places. [2024-06-28 02:10:19,737 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 293 transitions, 3886 flow [2024-06-28 02:10:19,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:19,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:19,738 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] [2024-06-28 02:10:19,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:10:19,738 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:19,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:19,739 INFO L85 PathProgramCache]: Analyzing trace with hash -71030756, now seen corresponding path program 11 times [2024-06-28 02:10:19,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:19,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453087666] [2024-06-28 02:10:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:19,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:24,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:24,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453087666] [2024-06-28 02:10:24,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453087666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:24,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:24,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:24,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487189531] [2024-06-28 02:10:24,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:24,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:24,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:24,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:24,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:24,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:10:24,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 293 transitions, 3886 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:24,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:24,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:10:24,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:26,755 INFO L124 PetriNetUnfolderBase]: 6034/9339 cut-off events. [2024-06-28 02:10:26,756 INFO L125 PetriNetUnfolderBase]: For 179786/179788 co-relation queries the response was YES. [2024-06-28 02:10:26,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51214 conditions, 9339 events. 6034/9339 cut-off events. For 179786/179788 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 55663 event pairs, 2277 based on Foata normal form. 4/9337 useless extension candidates. Maximal degree in co-relation 51098. Up to 7877 conditions per place. [2024-06-28 02:10:26,855 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 204 selfloop transitions, 120 changer transitions 0/330 dead transitions. [2024-06-28 02:10:26,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 330 transitions, 4759 flow [2024-06-28 02:10:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:10:26,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:10:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 02:10:26,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42292490118577075 [2024-06-28 02:10:26,856 INFO L175 Difference]: Start difference. First operand has 246 places, 293 transitions, 3886 flow. Second operand 11 states and 214 transitions. [2024-06-28 02:10:26,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 330 transitions, 4759 flow [2024-06-28 02:10:27,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 330 transitions, 4473 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-28 02:10:27,582 INFO L231 Difference]: Finished difference. Result has 246 places, 296 transitions, 3893 flow [2024-06-28 02:10:27,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3600, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3893, PETRI_PLACES=246, PETRI_TRANSITIONS=296} [2024-06-28 02:10:27,582 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 196 predicate places. [2024-06-28 02:10:27,582 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 296 transitions, 3893 flow [2024-06-28 02:10:27,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:27,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:27,583 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] [2024-06-28 02:10:27,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:10:27,583 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:27,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:27,583 INFO L85 PathProgramCache]: Analyzing trace with hash -237264536, now seen corresponding path program 12 times [2024-06-28 02:10:27,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:27,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712526834] [2024-06-28 02:10:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:27,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:31,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:31,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:31,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712526834] [2024-06-28 02:10:31,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712526834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:31,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:31,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:31,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785544780] [2024-06-28 02:10:31,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:31,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:31,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:31,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:31,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:31,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:10:31,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 296 transitions, 3893 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:31,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:31,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:10:31,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:33,793 INFO L124 PetriNetUnfolderBase]: 6022/9323 cut-off events. [2024-06-28 02:10:33,793 INFO L125 PetriNetUnfolderBase]: For 177521/177523 co-relation queries the response was YES. [2024-06-28 02:10:33,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50707 conditions, 9323 events. 6022/9323 cut-off events. For 177521/177523 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 55604 event pairs, 2275 based on Foata normal form. 4/9321 useless extension candidates. Maximal degree in co-relation 50592. Up to 7869 conditions per place. [2024-06-28 02:10:33,892 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 206 selfloop transitions, 113 changer transitions 0/325 dead transitions. [2024-06-28 02:10:33,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 325 transitions, 4701 flow [2024-06-28 02:10:33,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:10:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:10:33,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 02:10:33,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43719806763285024 [2024-06-28 02:10:33,894 INFO L175 Difference]: Start difference. First operand has 246 places, 296 transitions, 3893 flow. Second operand 9 states and 181 transitions. [2024-06-28 02:10:33,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 325 transitions, 4701 flow [2024-06-28 02:10:34,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 325 transitions, 4393 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 02:10:34,367 INFO L231 Difference]: Finished difference. Result has 246 places, 296 transitions, 3817 flow [2024-06-28 02:10:34,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3585, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3817, PETRI_PLACES=246, PETRI_TRANSITIONS=296} [2024-06-28 02:10:34,368 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 196 predicate places. [2024-06-28 02:10:34,368 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 296 transitions, 3817 flow [2024-06-28 02:10:34,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:34,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:34,368 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] [2024-06-28 02:10:34,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:10:34,369 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:34,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:34,369 INFO L85 PathProgramCache]: Analyzing trace with hash -249228986, now seen corresponding path program 13 times [2024-06-28 02:10:34,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:34,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553692986] [2024-06-28 02:10:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:34,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:38,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:38,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:38,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553692986] [2024-06-28 02:10:38,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553692986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:38,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:38,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:38,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437391235] [2024-06-28 02:10:38,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:38,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:38,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:38,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:38,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:38,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:10:38,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 296 transitions, 3817 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:38,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:38,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:10:38,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:40,856 INFO L124 PetriNetUnfolderBase]: 6010/9307 cut-off events. [2024-06-28 02:10:40,856 INFO L125 PetriNetUnfolderBase]: For 174627/174629 co-relation queries the response was YES. [2024-06-28 02:10:40,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50068 conditions, 9307 events. 6010/9307 cut-off events. For 174627/174629 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 55595 event pairs, 2410 based on Foata normal form. 4/9305 useless extension candidates. Maximal degree in co-relation 49953. Up to 8457 conditions per place. [2024-06-28 02:10:40,974 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 258 selfloop transitions, 57 changer transitions 0/321 dead transitions. [2024-06-28 02:10:40,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 321 transitions, 4501 flow [2024-06-28 02:10:40,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:10:40,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:10:40,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 02:10:40,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4227053140096618 [2024-06-28 02:10:40,976 INFO L175 Difference]: Start difference. First operand has 246 places, 296 transitions, 3817 flow. Second operand 9 states and 175 transitions. [2024-06-28 02:10:40,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 321 transitions, 4501 flow [2024-06-28 02:10:41,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 321 transitions, 4209 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 02:10:41,489 INFO L231 Difference]: Finished difference. Result has 246 places, 296 transitions, 3645 flow [2024-06-28 02:10:41,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3525, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3645, PETRI_PLACES=246, PETRI_TRANSITIONS=296} [2024-06-28 02:10:41,489 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 196 predicate places. [2024-06-28 02:10:41,490 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 296 transitions, 3645 flow [2024-06-28 02:10:41,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:41,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:41,490 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, 1] [2024-06-28 02:10:41,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:10:41,490 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:41,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:41,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2038936917, now seen corresponding path program 1 times [2024-06-28 02:10:41,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:41,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897074886] [2024-06-28 02:10:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:41,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:44,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897074886] [2024-06-28 02:10:44,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897074886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:44,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:44,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:10:44,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156324854] [2024-06-28 02:10:44,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:44,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:10:44,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:44,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:10:44,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:10:44,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:10:44,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 296 transitions, 3645 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:44,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:44,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:10:44,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:47,319 INFO L124 PetriNetUnfolderBase]: 6561/10100 cut-off events. [2024-06-28 02:10:47,320 INFO L125 PetriNetUnfolderBase]: For 218250/218252 co-relation queries the response was YES. [2024-06-28 02:10:47,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55337 conditions, 10100 events. 6561/10100 cut-off events. For 218250/218252 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 61564 event pairs, 1427 based on Foata normal form. 8/10102 useless extension candidates. Maximal degree in co-relation 55221. Up to 7381 conditions per place. [2024-06-28 02:10:47,431 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 276 selfloop transitions, 80 changer transitions 0/362 dead transitions. [2024-06-28 02:10:47,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 362 transitions, 4985 flow [2024-06-28 02:10:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:10:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:10:47,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 02:10:47,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271739130434783 [2024-06-28 02:10:47,432 INFO L175 Difference]: Start difference. First operand has 246 places, 296 transitions, 3645 flow. Second operand 8 states and 194 transitions. [2024-06-28 02:10:47,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 362 transitions, 4985 flow [2024-06-28 02:10:48,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 362 transitions, 4871 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 02:10:48,191 INFO L231 Difference]: Finished difference. Result has 247 places, 300 transitions, 3781 flow [2024-06-28 02:10:48,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3531, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3781, PETRI_PLACES=247, PETRI_TRANSITIONS=300} [2024-06-28 02:10:48,191 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 197 predicate places. [2024-06-28 02:10:48,192 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 300 transitions, 3781 flow [2024-06-28 02:10:48,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:48,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:48,192 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, 1] [2024-06-28 02:10:48,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:10:48,192 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:48,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:48,192 INFO L85 PathProgramCache]: Analyzing trace with hash -889258401, now seen corresponding path program 2 times [2024-06-28 02:10:48,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:48,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153323162] [2024-06-28 02:10:48,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:48,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:10:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:10:53,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:10:53,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153323162] [2024-06-28 02:10:53,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153323162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:10:53,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:10:53,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:10:53,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568817712] [2024-06-28 02:10:53,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:10:53,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:10:53,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:10:53,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:10:53,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:10:53,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:10:53,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 300 transitions, 3781 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:53,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:10:53,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:10:53,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:10:56,520 INFO L124 PetriNetUnfolderBase]: 6871/10654 cut-off events. [2024-06-28 02:10:56,520 INFO L125 PetriNetUnfolderBase]: For 250400/250402 co-relation queries the response was YES. [2024-06-28 02:10:56,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59280 conditions, 10654 events. 6871/10654 cut-off events. For 250400/250402 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 65950 event pairs, 1424 based on Foata normal form. 18/10666 useless extension candidates. Maximal degree in co-relation 59162. Up to 7525 conditions per place. [2024-06-28 02:10:56,639 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 267 selfloop transitions, 87 changer transitions 0/360 dead transitions. [2024-06-28 02:10:56,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 360 transitions, 4980 flow [2024-06-28 02:10:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:10:56,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:10:56,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 02:10:56,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244565217391305 [2024-06-28 02:10:56,642 INFO L175 Difference]: Start difference. First operand has 247 places, 300 transitions, 3781 flow. Second operand 8 states and 193 transitions. [2024-06-28 02:10:56,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 360 transitions, 4980 flow [2024-06-28 02:10:57,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 360 transitions, 4887 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 02:10:57,448 INFO L231 Difference]: Finished difference. Result has 254 places, 303 transitions, 3996 flow [2024-06-28 02:10:57,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3692, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3996, PETRI_PLACES=254, PETRI_TRANSITIONS=303} [2024-06-28 02:10:57,448 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 204 predicate places. [2024-06-28 02:10:57,448 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 303 transitions, 3996 flow [2024-06-28 02:10:57,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:10:57,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:10:57,449 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, 1] [2024-06-28 02:10:57,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:10:57,449 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:10:57,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:10:57,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2109645379, now seen corresponding path program 3 times [2024-06-28 02:10:57,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:10:57,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526461619] [2024-06-28 02:10:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:10:57,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:10:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:02,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:02,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526461619] [2024-06-28 02:11:02,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526461619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:02,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:02,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:02,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143627957] [2024-06-28 02:11:02,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:02,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:02,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:02,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:02,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:02,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:11:02,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 303 transitions, 3996 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:02,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:02,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:11:02,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:04,897 INFO L124 PetriNetUnfolderBase]: 6884/10741 cut-off events. [2024-06-28 02:11:04,897 INFO L125 PetriNetUnfolderBase]: For 238262/238264 co-relation queries the response was YES. [2024-06-28 02:11:04,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60414 conditions, 10741 events. 6884/10741 cut-off events. For 238262/238264 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 67029 event pairs, 2626 based on Foata normal form. 10/10745 useless extension candidates. Maximal degree in co-relation 60292. Up to 9422 conditions per place. [2024-06-28 02:11:05,023 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 265 selfloop transitions, 64 changer transitions 0/335 dead transitions. [2024-06-28 02:11:05,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 335 transitions, 4808 flow [2024-06-28 02:11:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:11:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:11:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 02:11:05,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813664596273292 [2024-06-28 02:11:05,025 INFO L175 Difference]: Start difference. First operand has 254 places, 303 transitions, 3996 flow. Second operand 7 states and 155 transitions. [2024-06-28 02:11:05,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 335 transitions, 4808 flow [2024-06-28 02:11:05,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 335 transitions, 4660 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:11:05,816 INFO L231 Difference]: Finished difference. Result has 254 places, 304 transitions, 4010 flow [2024-06-28 02:11:05,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3851, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4010, PETRI_PLACES=254, PETRI_TRANSITIONS=304} [2024-06-28 02:11:05,816 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 204 predicate places. [2024-06-28 02:11:05,817 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 304 transitions, 4010 flow [2024-06-28 02:11:05,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:05,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:05,817 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, 1] [2024-06-28 02:11:05,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:11:05,817 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:05,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:05,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1406094059, now seen corresponding path program 4 times [2024-06-28 02:11:05,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:05,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920756201] [2024-06-28 02:11:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:05,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:11,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:11,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920756201] [2024-06-28 02:11:11,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920756201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:11,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:11,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:11:11,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133219163] [2024-06-28 02:11:11,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:11,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:11:11,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:11,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:11:11,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:11:11,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:11:11,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 304 transitions, 4010 flow. Second operand has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:11,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:11,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:11:11,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:14,200 INFO L124 PetriNetUnfolderBase]: 6894/10753 cut-off events. [2024-06-28 02:11:14,201 INFO L125 PetriNetUnfolderBase]: For 211309/211311 co-relation queries the response was YES. [2024-06-28 02:11:14,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59219 conditions, 10753 events. 6894/10753 cut-off events. For 211309/211311 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 67053 event pairs, 2584 based on Foata normal form. 8/10755 useless extension candidates. Maximal degree in co-relation 59099. Up to 9139 conditions per place. [2024-06-28 02:11:14,312 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 270 selfloop transitions, 79 changer transitions 0/355 dead transitions. [2024-06-28 02:11:14,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 355 transitions, 5047 flow [2024-06-28 02:11:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:11:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:11:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-28 02:11:14,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-06-28 02:11:14,314 INFO L175 Difference]: Start difference. First operand has 254 places, 304 transitions, 4010 flow. Second operand 9 states and 192 transitions. [2024-06-28 02:11:14,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 355 transitions, 5047 flow [2024-06-28 02:11:14,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 355 transitions, 4916 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:11:14,928 INFO L231 Difference]: Finished difference. Result has 259 places, 312 transitions, 4234 flow [2024-06-28 02:11:14,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3887, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4234, PETRI_PLACES=259, PETRI_TRANSITIONS=312} [2024-06-28 02:11:14,929 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 209 predicate places. [2024-06-28 02:11:14,929 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 312 transitions, 4234 flow [2024-06-28 02:11:14,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.636363636363637) internal successors, (128), 11 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:14,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:14,930 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, 1] [2024-06-28 02:11:14,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:11:14,930 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:14,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:14,930 INFO L85 PathProgramCache]: Analyzing trace with hash -143475251, now seen corresponding path program 5 times [2024-06-28 02:11:14,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:14,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104827967] [2024-06-28 02:11:14,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:14,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:18,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:18,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104827967] [2024-06-28 02:11:18,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104827967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:18,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:18,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:18,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055320227] [2024-06-28 02:11:18,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:18,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:18,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:18,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:18,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:18,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:11:18,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 312 transitions, 4234 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:18,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:18,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:11:18,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:21,791 INFO L124 PetriNetUnfolderBase]: 7199/11254 cut-off events. [2024-06-28 02:11:21,791 INFO L125 PetriNetUnfolderBase]: For 237919/237921 co-relation queries the response was YES. [2024-06-28 02:11:21,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62998 conditions, 11254 events. 7199/11254 cut-off events. For 237919/237921 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 71006 event pairs, 2689 based on Foata normal form. 10/11258 useless extension candidates. Maximal degree in co-relation 62876. Up to 9264 conditions per place. [2024-06-28 02:11:21,913 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 287 selfloop transitions, 74 changer transitions 0/367 dead transitions. [2024-06-28 02:11:21,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 367 transitions, 5378 flow [2024-06-28 02:11:21,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:11:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:11:21,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 02:11:21,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-28 02:11:21,915 INFO L175 Difference]: Start difference. First operand has 259 places, 312 transitions, 4234 flow. Second operand 8 states and 185 transitions. [2024-06-28 02:11:21,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 367 transitions, 5378 flow [2024-06-28 02:11:22,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 367 transitions, 5232 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 02:11:22,632 INFO L231 Difference]: Finished difference. Result has 262 places, 315 transitions, 4316 flow [2024-06-28 02:11:22,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4088, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4316, PETRI_PLACES=262, PETRI_TRANSITIONS=315} [2024-06-28 02:11:22,632 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 212 predicate places. [2024-06-28 02:11:22,632 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 315 transitions, 4316 flow [2024-06-28 02:11:22,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:22,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:22,632 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, 1] [2024-06-28 02:11:22,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:11:22,633 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:22,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:22,633 INFO L85 PathProgramCache]: Analyzing trace with hash -143266001, now seen corresponding path program 6 times [2024-06-28 02:11:22,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:22,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457333332] [2024-06-28 02:11:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:22,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:26,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:26,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457333332] [2024-06-28 02:11:26,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457333332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:26,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:26,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:26,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197011700] [2024-06-28 02:11:26,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:26,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:26,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:26,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:26,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:26,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:11:26,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 315 transitions, 4316 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:26,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:26,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:11:26,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:29,042 INFO L124 PetriNetUnfolderBase]: 7373/11528 cut-off events. [2024-06-28 02:11:29,042 INFO L125 PetriNetUnfolderBase]: For 251252/251254 co-relation queries the response was YES. [2024-06-28 02:11:29,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64993 conditions, 11528 events. 7373/11528 cut-off events. For 251252/251254 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 73155 event pairs, 2842 based on Foata normal form. 10/11532 useless extension candidates. Maximal degree in co-relation 64869. Up to 10109 conditions per place. [2024-06-28 02:11:29,470 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 276 selfloop transitions, 72 changer transitions 0/354 dead transitions. [2024-06-28 02:11:29,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 354 transitions, 5182 flow [2024-06-28 02:11:29,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:11:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:11:29,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-28 02:11:29,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673913043478261 [2024-06-28 02:11:29,472 INFO L175 Difference]: Start difference. First operand has 262 places, 315 transitions, 4316 flow. Second operand 8 states and 172 transitions. [2024-06-28 02:11:29,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 354 transitions, 5182 flow [2024-06-28 02:11:30,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 354 transitions, 5049 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 02:11:30,129 INFO L231 Difference]: Finished difference. Result has 266 places, 316 transitions, 4353 flow [2024-06-28 02:11:30,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4187, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4353, PETRI_PLACES=266, PETRI_TRANSITIONS=316} [2024-06-28 02:11:30,129 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 216 predicate places. [2024-06-28 02:11:30,130 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 316 transitions, 4353 flow [2024-06-28 02:11:30,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:30,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:30,130 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, 1] [2024-06-28 02:11:30,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:11:30,130 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:30,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:30,131 INFO L85 PathProgramCache]: Analyzing trace with hash 122431279, now seen corresponding path program 7 times [2024-06-28 02:11:30,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:30,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129168818] [2024-06-28 02:11:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:30,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:33,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:33,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129168818] [2024-06-28 02:11:33,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129168818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:33,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:33,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:33,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493091751] [2024-06-28 02:11:33,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:33,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:33,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:33,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:33,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:33,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:11:33,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 316 transitions, 4353 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:33,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:33,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:11:33,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:36,638 INFO L124 PetriNetUnfolderBase]: 7547/11802 cut-off events. [2024-06-28 02:11:36,638 INFO L125 PetriNetUnfolderBase]: For 256141/256143 co-relation queries the response was YES. [2024-06-28 02:11:36,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66482 conditions, 11802 events. 7547/11802 cut-off events. For 256141/256143 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 75263 event pairs, 2894 based on Foata normal form. 10/11806 useless extension candidates. Maximal degree in co-relation 66356. Up to 10363 conditions per place. [2024-06-28 02:11:36,794 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 273 selfloop transitions, 72 changer transitions 0/351 dead transitions. [2024-06-28 02:11:36,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 351 transitions, 5201 flow [2024-06-28 02:11:36,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:11:36,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:11:36,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 02:11:36,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592391304347826 [2024-06-28 02:11:36,795 INFO L175 Difference]: Start difference. First operand has 266 places, 316 transitions, 4353 flow. Second operand 8 states and 169 transitions. [2024-06-28 02:11:36,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 351 transitions, 5201 flow [2024-06-28 02:11:37,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 351 transitions, 5058 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 02:11:37,670 INFO L231 Difference]: Finished difference. Result has 268 places, 317 transitions, 4378 flow [2024-06-28 02:11:37,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4210, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4378, PETRI_PLACES=268, PETRI_TRANSITIONS=317} [2024-06-28 02:11:37,670 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 218 predicate places. [2024-06-28 02:11:37,671 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 317 transitions, 4378 flow [2024-06-28 02:11:37,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:37,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:37,671 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, 1] [2024-06-28 02:11:37,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:11:37,671 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:37,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1741346799, now seen corresponding path program 8 times [2024-06-28 02:11:37,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:37,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458871714] [2024-06-28 02:11:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:37,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:41,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:41,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458871714] [2024-06-28 02:11:41,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458871714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:41,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:41,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:41,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182131666] [2024-06-28 02:11:41,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:41,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:41,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:41,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:41,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:41,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:11:41,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 317 transitions, 4378 flow. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:41,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:41,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:11:41,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:44,292 INFO L124 PetriNetUnfolderBase]: 7524/11769 cut-off events. [2024-06-28 02:11:44,292 INFO L125 PetriNetUnfolderBase]: For 243427/243429 co-relation queries the response was YES. [2024-06-28 02:11:44,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65836 conditions, 11769 events. 7524/11769 cut-off events. For 243427/243429 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 75048 event pairs, 3184 based on Foata normal form. 10/11773 useless extension candidates. Maximal degree in co-relation 65709. Up to 10629 conditions per place. [2024-06-28 02:11:44,431 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 289 selfloop transitions, 51 changer transitions 0/346 dead transitions. [2024-06-28 02:11:44,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 346 transitions, 5204 flow [2024-06-28 02:11:44,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:11:44,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:11:44,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-28 02:11:44,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 02:11:44,433 INFO L175 Difference]: Start difference. First operand has 268 places, 317 transitions, 4378 flow. Second operand 8 states and 161 transitions. [2024-06-28 02:11:44,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 346 transitions, 5204 flow [2024-06-28 02:11:45,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 346 transitions, 5055 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:11:45,336 INFO L231 Difference]: Finished difference. Result has 270 places, 319 transitions, 4392 flow [2024-06-28 02:11:45,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4231, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4392, PETRI_PLACES=270, PETRI_TRANSITIONS=319} [2024-06-28 02:11:45,337 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 220 predicate places. [2024-06-28 02:11:45,337 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 319 transitions, 4392 flow [2024-06-28 02:11:45,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:45,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:45,337 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, 1] [2024-06-28 02:11:45,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:11:45,337 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:45,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:45,338 INFO L85 PathProgramCache]: Analyzing trace with hash -758958183, now seen corresponding path program 1 times [2024-06-28 02:11:45,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:45,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264312869] [2024-06-28 02:11:45,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:45,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:49,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:49,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264312869] [2024-06-28 02:11:49,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264312869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:49,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:49,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:11:49,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901166068] [2024-06-28 02:11:49,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:49,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:11:49,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:49,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:11:49,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:11:49,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:11:49,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 319 transitions, 4392 flow. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:49,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:49,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:11:49,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:11:52,492 INFO L124 PetriNetUnfolderBase]: 7622/11889 cut-off events. [2024-06-28 02:11:52,492 INFO L125 PetriNetUnfolderBase]: For 243083/243085 co-relation queries the response was YES. [2024-06-28 02:11:52,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66696 conditions, 11889 events. 7622/11889 cut-off events. For 243083/243085 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 75549 event pairs, 2438 based on Foata normal form. 6/11889 useless extension candidates. Maximal degree in co-relation 66568. Up to 7831 conditions per place. [2024-06-28 02:11:52,651 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 280 selfloop transitions, 93 changer transitions 0/379 dead transitions. [2024-06-28 02:11:52,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 379 transitions, 5608 flow [2024-06-28 02:11:52,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:11:52,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:11:52,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 02:11:52,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-28 02:11:52,652 INFO L175 Difference]: Start difference. First operand has 270 places, 319 transitions, 4392 flow. Second operand 8 states and 190 transitions. [2024-06-28 02:11:52,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 379 transitions, 5608 flow [2024-06-28 02:11:53,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 379 transitions, 5486 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:11:53,499 INFO L231 Difference]: Finished difference. Result has 272 places, 320 transitions, 4479 flow [2024-06-28 02:11:53,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4270, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4479, PETRI_PLACES=272, PETRI_TRANSITIONS=320} [2024-06-28 02:11:53,499 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 222 predicate places. [2024-06-28 02:11:53,499 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 320 transitions, 4479 flow [2024-06-28 02:11:53,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:53,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:11:53,500 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, 1, 1] [2024-06-28 02:11:53,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:11:53,500 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:11:53,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:11:53,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1555844115, now seen corresponding path program 2 times [2024-06-28 02:11:53,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:11:53,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320913322] [2024-06-28 02:11:53,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:11:53,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:11:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:11:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:11:57,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:11:57,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320913322] [2024-06-28 02:11:57,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320913322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:11:57,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:11:57,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:11:57,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556056414] [2024-06-28 02:11:57,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:11:57,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:11:57,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:11:57,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:11:57,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:11:57,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:11:57,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 320 transitions, 4479 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:11:57,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:11:57,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:11:57,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:00,732 INFO L124 PetriNetUnfolderBase]: 7720/12099 cut-off events. [2024-06-28 02:12:00,732 INFO L125 PetriNetUnfolderBase]: For 253029/253031 co-relation queries the response was YES. [2024-06-28 02:12:00,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68489 conditions, 12099 events. 7720/12099 cut-off events. For 253029/253031 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 77480 event pairs, 2331 based on Foata normal form. 6/12099 useless extension candidates. Maximal degree in co-relation 68360. Up to 7879 conditions per place. [2024-06-28 02:12:00,886 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 275 selfloop transitions, 97 changer transitions 0/378 dead transitions. [2024-06-28 02:12:00,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 378 transitions, 5709 flow [2024-06-28 02:12:00,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 02:12:00,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-28 02:12:00,887 INFO L175 Difference]: Start difference. First operand has 272 places, 320 transitions, 4479 flow. Second operand 8 states and 189 transitions. [2024-06-28 02:12:00,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 378 transitions, 5709 flow [2024-06-28 02:12:01,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 378 transitions, 5302 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-28 02:12:01,887 INFO L231 Difference]: Finished difference. Result has 269 places, 321 transitions, 4290 flow [2024-06-28 02:12:01,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4081, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4290, PETRI_PLACES=269, PETRI_TRANSITIONS=321} [2024-06-28 02:12:01,888 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 219 predicate places. [2024-06-28 02:12:01,888 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 321 transitions, 4290 flow [2024-06-28 02:12:01,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:01,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:01,889 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, 1] [2024-06-28 02:12:01,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:12:01,889 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:12:01,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:01,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1555844456, now seen corresponding path program 1 times [2024-06-28 02:12:01,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:01,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433030390] [2024-06-28 02:12:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:01,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:05,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:05,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433030390] [2024-06-28 02:12:05,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433030390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:05,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:05,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:12:05,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889880125] [2024-06-28 02:12:05,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:05,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:12:05,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:05,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:12:05,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:12:05,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:12:05,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 321 transitions, 4290 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:05,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:05,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:12:05,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:09,391 INFO L124 PetriNetUnfolderBase]: 8260/12905 cut-off events. [2024-06-28 02:12:09,391 INFO L125 PetriNetUnfolderBase]: For 296362/296372 co-relation queries the response was YES. [2024-06-28 02:12:09,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70506 conditions, 12905 events. 8260/12905 cut-off events. For 296362/296372 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 83202 event pairs, 2671 based on Foata normal form. 16/12918 useless extension candidates. Maximal degree in co-relation 70383. Up to 9744 conditions per place. [2024-06-28 02:12:09,537 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 300 selfloop transitions, 94 changer transitions 0/400 dead transitions. [2024-06-28 02:12:09,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 400 transitions, 5767 flow [2024-06-28 02:12:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:12:09,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:12:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2024-06-28 02:12:09,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48043478260869565 [2024-06-28 02:12:09,539 INFO L175 Difference]: Start difference. First operand has 269 places, 321 transitions, 4290 flow. Second operand 10 states and 221 transitions. [2024-06-28 02:12:09,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 400 transitions, 5767 flow [2024-06-28 02:12:10,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 400 transitions, 5607 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 02:12:10,523 INFO L231 Difference]: Finished difference. Result has 275 places, 332 transitions, 4564 flow [2024-06-28 02:12:10,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4135, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4564, PETRI_PLACES=275, PETRI_TRANSITIONS=332} [2024-06-28 02:12:10,524 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 225 predicate places. [2024-06-28 02:12:10,524 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 332 transitions, 4564 flow [2024-06-28 02:12:10,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:10,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:10,524 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, 1] [2024-06-28 02:12:10,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:12:10,524 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:12:10,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:10,524 INFO L85 PathProgramCache]: Analyzing trace with hash -810570062, now seen corresponding path program 2 times [2024-06-28 02:12:10,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:10,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335732206] [2024-06-28 02:12:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:10,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:14,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:14,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:14,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335732206] [2024-06-28 02:12:14,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335732206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:14,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:14,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:12:14,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468629619] [2024-06-28 02:12:14,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:14,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:12:14,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:14,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:12:14,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:12:14,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:12:14,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 332 transitions, 4564 flow. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:14,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:14,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:12:14,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:18,483 INFO L124 PetriNetUnfolderBase]: 8850/13806 cut-off events. [2024-06-28 02:12:18,483 INFO L125 PetriNetUnfolderBase]: For 329579/329593 co-relation queries the response was YES. [2024-06-28 02:12:18,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77420 conditions, 13806 events. 8850/13806 cut-off events. For 329579/329593 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 89651 event pairs, 3784 based on Foata normal form. 26/13831 useless extension candidates. Maximal degree in co-relation 77296. Up to 11985 conditions per place. [2024-06-28 02:12:18,642 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 337 selfloop transitions, 123 changer transitions 0/466 dead transitions. [2024-06-28 02:12:18,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 466 transitions, 6880 flow [2024-06-28 02:12:18,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:12:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:12:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 270 transitions. [2024-06-28 02:12:18,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.451505016722408 [2024-06-28 02:12:18,644 INFO L175 Difference]: Start difference. First operand has 275 places, 332 transitions, 4564 flow. Second operand 13 states and 270 transitions. [2024-06-28 02:12:18,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 466 transitions, 6880 flow [2024-06-28 02:12:19,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 466 transitions, 6701 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:12:19,803 INFO L231 Difference]: Finished difference. Result has 287 places, 398 transitions, 5924 flow [2024-06-28 02:12:19,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4458, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5924, PETRI_PLACES=287, PETRI_TRANSITIONS=398} [2024-06-28 02:12:19,804 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 237 predicate places. [2024-06-28 02:12:19,804 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 398 transitions, 5924 flow [2024-06-28 02:12:19,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:19,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:19,805 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, 1] [2024-06-28 02:12:19,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:12:19,805 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:12:19,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:19,805 INFO L85 PathProgramCache]: Analyzing trace with hash -285473770, now seen corresponding path program 3 times [2024-06-28 02:12:19,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:19,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705037927] [2024-06-28 02:12:19,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:19,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:23,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:23,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705037927] [2024-06-28 02:12:23,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705037927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:23,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:23,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:12:23,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928326327] [2024-06-28 02:12:23,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:23,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:12:23,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:23,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:12:23,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:12:23,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:12:23,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 398 transitions, 5924 flow. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:23,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:23,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:12:23,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:27,950 INFO L124 PetriNetUnfolderBase]: 9226/14393 cut-off events. [2024-06-28 02:12:27,950 INFO L125 PetriNetUnfolderBase]: For 356458/356463 co-relation queries the response was YES. [2024-06-28 02:12:28,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83908 conditions, 14393 events. 9226/14393 cut-off events. For 356458/356463 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 93785 event pairs, 3660 based on Foata normal form. 12/14402 useless extension candidates. Maximal degree in co-relation 83778. Up to 11567 conditions per place. [2024-06-28 02:12:28,148 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 311 selfloop transitions, 146 changer transitions 0/463 dead transitions. [2024-06-28 02:12:28,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 463 transitions, 7352 flow [2024-06-28 02:12:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:12:28,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:12:28,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-06-28 02:12:28,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 02:12:28,150 INFO L175 Difference]: Start difference. First operand has 287 places, 398 transitions, 5924 flow. Second operand 11 states and 230 transitions. [2024-06-28 02:12:28,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 463 transitions, 7352 flow [2024-06-28 02:12:29,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 463 transitions, 7124 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 02:12:29,166 INFO L231 Difference]: Finished difference. Result has 292 places, 402 transitions, 6102 flow [2024-06-28 02:12:29,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5696, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6102, PETRI_PLACES=292, PETRI_TRANSITIONS=402} [2024-06-28 02:12:29,167 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 242 predicate places. [2024-06-28 02:12:29,167 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 402 transitions, 6102 flow [2024-06-28 02:12:29,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:29,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:29,167 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, 1] [2024-06-28 02:12:29,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:12:29,167 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:12:29,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:29,168 INFO L85 PathProgramCache]: Analyzing trace with hash 35923919, now seen corresponding path program 3 times [2024-06-28 02:12:29,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:29,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741169633] [2024-06-28 02:12:29,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:29,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:32,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:32,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741169633] [2024-06-28 02:12:32,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741169633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:32,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:32,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:12:32,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644746041] [2024-06-28 02:12:32,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:32,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:12:32,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:32,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:12:32,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:12:32,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:12:32,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 402 transitions, 6102 flow. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:32,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:32,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:12:32,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:36,737 INFO L124 PetriNetUnfolderBase]: 9324/14570 cut-off events. [2024-06-28 02:12:36,737 INFO L125 PetriNetUnfolderBase]: For 362883/362883 co-relation queries the response was YES. [2024-06-28 02:12:36,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85494 conditions, 14570 events. 9324/14570 cut-off events. For 362883/362883 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 95130 event pairs, 3468 based on Foata normal form. 6/14571 useless extension candidates. Maximal degree in co-relation 85366. Up to 12159 conditions per place. [2024-06-28 02:12:36,948 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 337 selfloop transitions, 105 changer transitions 0/448 dead transitions. [2024-06-28 02:12:36,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 448 transitions, 7266 flow [2024-06-28 02:12:36,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:36,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 02:12:36,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-28 02:12:36,949 INFO L175 Difference]: Start difference. First operand has 292 places, 402 transitions, 6102 flow. Second operand 8 states and 176 transitions. [2024-06-28 02:12:36,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 448 transitions, 7266 flow [2024-06-28 02:12:38,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 448 transitions, 7078 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 02:12:38,180 INFO L231 Difference]: Finished difference. Result has 292 places, 403 transitions, 6145 flow [2024-06-28 02:12:38,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5914, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6145, PETRI_PLACES=292, PETRI_TRANSITIONS=403} [2024-06-28 02:12:38,181 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 242 predicate places. [2024-06-28 02:12:38,181 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 403 transitions, 6145 flow [2024-06-28 02:12:38,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:38,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:38,181 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, 1] [2024-06-28 02:12:38,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:12:38,182 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:12:38,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:38,182 INFO L85 PathProgramCache]: Analyzing trace with hash -757663892, now seen corresponding path program 4 times [2024-06-28 02:12:38,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:38,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175453708] [2024-06-28 02:12:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:38,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:42,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:42,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175453708] [2024-06-28 02:12:42,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175453708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:42,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:42,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:12:42,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630921456] [2024-06-28 02:12:42,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:42,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:12:42,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:42,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:12:42,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:12:42,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:12:42,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 403 transitions, 6145 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:42,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:42,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:12:42,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:46,837 INFO L124 PetriNetUnfolderBase]: 10044/15606 cut-off events. [2024-06-28 02:12:46,838 INFO L125 PetriNetUnfolderBase]: For 488822/488822 co-relation queries the response was YES. [2024-06-28 02:12:47,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91484 conditions, 15606 events. 10044/15606 cut-off events. For 488822/488822 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 102379 event pairs, 4019 based on Foata normal form. 56/15657 useless extension candidates. Maximal degree in co-relation 91355. Up to 12947 conditions per place. [2024-06-28 02:12:47,073 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 333 selfloop transitions, 108 changer transitions 0/447 dead transitions. [2024-06-28 02:12:47,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 447 transitions, 7273 flow [2024-06-28 02:12:47,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:12:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:12:47,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-28 02:12:47,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45410628019323673 [2024-06-28 02:12:47,074 INFO L175 Difference]: Start difference. First operand has 292 places, 403 transitions, 6145 flow. Second operand 9 states and 188 transitions. [2024-06-28 02:12:47,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 447 transitions, 7273 flow [2024-06-28 02:12:48,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 447 transitions, 7066 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 02:12:48,405 INFO L231 Difference]: Finished difference. Result has 295 places, 405 transitions, 6226 flow [2024-06-28 02:12:48,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5938, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6226, PETRI_PLACES=295, PETRI_TRANSITIONS=405} [2024-06-28 02:12:48,406 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 245 predicate places. [2024-06-28 02:12:48,406 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 405 transitions, 6226 flow [2024-06-28 02:12:48,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:48,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:48,407 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, 1] [2024-06-28 02:12:48,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:12:48,407 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:12:48,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:48,408 INFO L85 PathProgramCache]: Analyzing trace with hash 396616434, now seen corresponding path program 1 times [2024-06-28 02:12:48,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:48,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444274025] [2024-06-28 02:12:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:48,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:52,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:52,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444274025] [2024-06-28 02:12:52,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444274025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:52,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:52,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:12:52,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063814447] [2024-06-28 02:12:52,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:52,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:12:52,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:52,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:12:52,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:12:52,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:12:52,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 405 transitions, 6226 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:52,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:52,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:12:52,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:57,025 INFO L124 PetriNetUnfolderBase]: 10764/16662 cut-off events. [2024-06-28 02:12:57,025 INFO L125 PetriNetUnfolderBase]: For 519957/519957 co-relation queries the response was YES. [2024-06-28 02:12:57,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97771 conditions, 16662 events. 10764/16662 cut-off events. For 519957/519957 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 110165 event pairs, 4426 based on Foata normal form. 56/16713 useless extension candidates. Maximal degree in co-relation 97641. Up to 14003 conditions per place. [2024-06-28 02:12:57,239 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 338 selfloop transitions, 108 changer transitions 0/452 dead transitions. [2024-06-28 02:12:57,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 452 transitions, 7378 flow [2024-06-28 02:12:57,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:12:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:12:57,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-28 02:12:57,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44565217391304346 [2024-06-28 02:12:57,241 INFO L175 Difference]: Start difference. First operand has 295 places, 405 transitions, 6226 flow. Second operand 10 states and 205 transitions. [2024-06-28 02:12:57,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 452 transitions, 7378 flow [2024-06-28 02:12:58,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 452 transitions, 7153 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:12:58,838 INFO L231 Difference]: Finished difference. Result has 298 places, 407 transitions, 6293 flow [2024-06-28 02:12:58,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6001, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6293, PETRI_PLACES=298, PETRI_TRANSITIONS=407} [2024-06-28 02:12:58,839 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 248 predicate places. [2024-06-28 02:12:58,839 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 407 transitions, 6293 flow [2024-06-28 02:12:58,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:58,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:58,839 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, 1] [2024-06-28 02:12:58,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:12:58,840 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:12:58,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:58,840 INFO L85 PathProgramCache]: Analyzing trace with hash 396883344, now seen corresponding path program 2 times [2024-06-28 02:12:58,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:58,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680597330] [2024-06-28 02:12:58,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:58,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:02,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:02,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680597330] [2024-06-28 02:13:02,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680597330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:02,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:02,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:13:02,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455691708] [2024-06-28 02:13:02,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:02,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:13:02,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:02,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:13:02,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:13:02,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:13:02,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 407 transitions, 6293 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:02,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:02,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:13:02,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:07,220 INFO L124 PetriNetUnfolderBase]: 11442/17670 cut-off events. [2024-06-28 02:13:07,220 INFO L125 PetriNetUnfolderBase]: For 520555/520555 co-relation queries the response was YES. [2024-06-28 02:13:07,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102940 conditions, 17670 events. 11442/17670 cut-off events. For 520555/520555 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 118046 event pairs, 4141 based on Foata normal form. 48/17713 useless extension candidates. Maximal degree in co-relation 102809. Up to 12678 conditions per place. [2024-06-28 02:13:07,463 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 337 selfloop transitions, 122 changer transitions 0/465 dead transitions. [2024-06-28 02:13:07,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 465 transitions, 7597 flow [2024-06-28 02:13:07,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:13:07,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:13:07,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 213 transitions. [2024-06-28 02:13:07,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46304347826086956 [2024-06-28 02:13:07,464 INFO L175 Difference]: Start difference. First operand has 298 places, 407 transitions, 6293 flow. Second operand 10 states and 213 transitions. [2024-06-28 02:13:07,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 465 transitions, 7597 flow [2024-06-28 02:13:08,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 465 transitions, 7366 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 02:13:08,996 INFO L231 Difference]: Finished difference. Result has 301 places, 412 transitions, 6484 flow [2024-06-28 02:13:08,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6062, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6484, PETRI_PLACES=301, PETRI_TRANSITIONS=412} [2024-06-28 02:13:08,996 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 251 predicate places. [2024-06-28 02:13:08,996 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 412 transitions, 6484 flow [2024-06-28 02:13:08,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:08,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:08,996 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, 1] [2024-06-28 02:13:08,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:13:08,997 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:13:08,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:08,997 INFO L85 PathProgramCache]: Analyzing trace with hash 189809172, now seen corresponding path program 5 times [2024-06-28 02:13:08,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:08,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960270613] [2024-06-28 02:13:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:08,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:13,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:13,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960270613] [2024-06-28 02:13:13,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960270613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:13,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:13,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:13:13,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692221581] [2024-06-28 02:13:13,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:13,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:13:13,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:13,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:13:13,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:13:13,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:13:13,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 412 transitions, 6484 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:13,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:13,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:13:13,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:19,365 INFO L124 PetriNetUnfolderBase]: 12072/18595 cut-off events. [2024-06-28 02:13:19,365 INFO L125 PetriNetUnfolderBase]: For 554717/554717 co-relation queries the response was YES. [2024-06-28 02:13:19,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108769 conditions, 18595 events. 12072/18595 cut-off events. For 554717/554717 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 125180 event pairs, 4631 based on Foata normal form. 48/18638 useless extension candidates. Maximal degree in co-relation 108636. Up to 13632 conditions per place. [2024-06-28 02:13:19,609 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 343 selfloop transitions, 118 changer transitions 0/467 dead transitions. [2024-06-28 02:13:19,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 467 transitions, 7776 flow [2024-06-28 02:13:19,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:19,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:19,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 196 transitions. [2024-06-28 02:13:19,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47342995169082125 [2024-06-28 02:13:19,611 INFO L175 Difference]: Start difference. First operand has 301 places, 412 transitions, 6484 flow. Second operand 9 states and 196 transitions. [2024-06-28 02:13:19,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 467 transitions, 7776 flow [2024-06-28 02:13:21,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 467 transitions, 7578 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:21,170 INFO L231 Difference]: Finished difference. Result has 305 places, 417 transitions, 6694 flow [2024-06-28 02:13:21,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6288, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6694, PETRI_PLACES=305, PETRI_TRANSITIONS=417} [2024-06-28 02:13:21,171 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 255 predicate places. [2024-06-28 02:13:21,171 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 417 transitions, 6694 flow [2024-06-28 02:13:21,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:21,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:21,172 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, 1] [2024-06-28 02:13:21,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:13:21,172 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:13:21,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:21,173 INFO L85 PathProgramCache]: Analyzing trace with hash 923468849, now seen corresponding path program 4 times [2024-06-28 02:13:21,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:21,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460482664] [2024-06-28 02:13:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:21,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:25,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:25,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460482664] [2024-06-28 02:13:25,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460482664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:25,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:25,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:13:25,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938207858] [2024-06-28 02:13:25,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:25,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:13:25,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:25,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:13:25,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:13:25,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:13:25,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 417 transitions, 6694 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:25,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:25,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:13:25,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:31,459 INFO L124 PetriNetUnfolderBase]: 12059/18603 cut-off events. [2024-06-28 02:13:31,460 INFO L125 PetriNetUnfolderBase]: For 446584/446584 co-relation queries the response was YES. [2024-06-28 02:13:31,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109302 conditions, 18603 events. 12059/18603 cut-off events. For 446584/446584 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 125508 event pairs, 5516 based on Foata normal form. 6/18604 useless extension candidates. Maximal degree in co-relation 109166. Up to 16885 conditions per place. [2024-06-28 02:13:31,691 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 377 selfloop transitions, 72 changer transitions 0/455 dead transitions. [2024-06-28 02:13:31,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 455 transitions, 7818 flow [2024-06-28 02:13:31,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:31,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-28 02:13:31,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453804347826087 [2024-06-28 02:13:31,693 INFO L175 Difference]: Start difference. First operand has 305 places, 417 transitions, 6694 flow. Second operand 8 states and 167 transitions. [2024-06-28 02:13:31,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 455 transitions, 7818 flow [2024-06-28 02:13:33,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 455 transitions, 7583 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 02:13:33,187 INFO L231 Difference]: Finished difference. Result has 306 places, 419 transitions, 6666 flow [2024-06-28 02:13:33,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6461, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6666, PETRI_PLACES=306, PETRI_TRANSITIONS=419} [2024-06-28 02:13:33,187 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 256 predicate places. [2024-06-28 02:13:33,187 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 419 transitions, 6666 flow [2024-06-28 02:13:33,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:33,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:33,188 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, 1] [2024-06-28 02:13:33,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:13:33,188 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:13:33,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:33,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1251373420, now seen corresponding path program 6 times [2024-06-28 02:13:33,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:33,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13351824] [2024-06-28 02:13:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:33,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:37,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:37,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13351824] [2024-06-28 02:13:37,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13351824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:37,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:37,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:13:37,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370843865] [2024-06-28 02:13:37,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:37,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:13:37,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:37,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:13:37,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:13:37,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:13:37,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 419 transitions, 6666 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:37,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:37,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:13:37,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:43,310 INFO L124 PetriNetUnfolderBase]: 12031/18561 cut-off events. [2024-06-28 02:13:43,310 INFO L125 PetriNetUnfolderBase]: For 430794/430799 co-relation queries the response was YES. [2024-06-28 02:13:43,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107102 conditions, 18561 events. 12031/18561 cut-off events. For 430794/430799 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 125362 event pairs, 5852 based on Foata normal form. 16/18574 useless extension candidates. Maximal degree in co-relation 106966. Up to 16092 conditions per place. [2024-06-28 02:13:43,553 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 324 selfloop transitions, 137 changer transitions 0/467 dead transitions. [2024-06-28 02:13:43,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 467 transitions, 7815 flow [2024-06-28 02:13:43,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:13:43,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:13:43,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-28 02:13:43,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44565217391304346 [2024-06-28 02:13:43,555 INFO L175 Difference]: Start difference. First operand has 306 places, 419 transitions, 6666 flow. Second operand 10 states and 205 transitions. [2024-06-28 02:13:43,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 467 transitions, 7815 flow [2024-06-28 02:13:45,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 467 transitions, 7644 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:45,234 INFO L231 Difference]: Finished difference. Result has 310 places, 419 transitions, 6786 flow [2024-06-28 02:13:45,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6495, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6786, PETRI_PLACES=310, PETRI_TRANSITIONS=419} [2024-06-28 02:13:45,235 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 260 predicate places. [2024-06-28 02:13:45,235 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 419 transitions, 6786 flow [2024-06-28 02:13:45,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:45,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:45,235 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, 1] [2024-06-28 02:13:45,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:13:45,235 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 02:13:45,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:45,236 INFO L85 PathProgramCache]: Analyzing trace with hash 205468234, now seen corresponding path program 7 times [2024-06-28 02:13:45,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:45,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013686354] [2024-06-28 02:13:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:45,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:49,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:49,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013686354] [2024-06-28 02:13:49,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013686354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:49,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:49,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:13:49,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58518141] [2024-06-28 02:13:49,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:49,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:13:49,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:13:49,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:13:49,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 02:13:49,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 419 transitions, 6786 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:49,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:49,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 02:13:49,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand