./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe028_power.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe028_power.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/safe028_power.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe028_power.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 04:28:43,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:28:43,460 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:28:43,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:28:43,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:28:43,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:28:43,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:28:43,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:28:43,484 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:28:43,487 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:28:43,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:28:43,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:28:43,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:28:43,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:28:43,489 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:28:43,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:28:43,489 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:28:43,489 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:28:43,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:28:43,490 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:28:43,490 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:28:43,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:28:43,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:28:43,490 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:28:43,490 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:28:43,490 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:28:43,491 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:28:43,491 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:28:43,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:28:43,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:28:43,492 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:28:43,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:28:43,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:28:43,493 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:28:43,493 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:28:43,493 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:28:43,493 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:28:43,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:28:43,493 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:28:43,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:28:43,493 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:28:43,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:28:43,494 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:28:43,494 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:28:43,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:28:43,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:28:43,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:28:43,680 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:28:43,680 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:28:43,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe028_power.yml/witness.yml [2024-06-28 04:28:43,898 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:28:43,899 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:28:43,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_power.i [2024-06-28 04:28:44,741 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:28:44,907 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:28:44,908 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_power.i [2024-06-28 04:28:44,924 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13e2af856/6efc585fe2dc49688cc9e79a64c3d871/FLAG7cfb07d4c [2024-06-28 04:28:44,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13e2af856/6efc585fe2dc49688cc9e79a64c3d871 [2024-06-28 04:28:44,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:28:44,941 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:28:44,942 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:28:44,942 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:28:44,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:28:44,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:28:43" (1/2) ... [2024-06-28 04:28:44,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99b6d48 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:28:44, skipping insertion in model container [2024-06-28 04:28:44,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:28:43" (1/2) ... [2024-06-28 04:28:44,952 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@ac16121 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:28:44, skipping insertion in model container [2024-06-28 04:28:44,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:28:44" (2/2) ... [2024-06-28 04:28:44,952 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99b6d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:44, skipping insertion in model container [2024-06-28 04:28:44,952 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:28:44" (2/2) ... [2024-06-28 04:28:44,953 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:28:45,070 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:28:45,071 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ((((((((((((((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$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$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 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)))) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)))) && (! 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_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) [2024-06-28 04:28:45,071 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] ((((((((((((((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_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_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1)))) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)))) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) [2024-06-28 04:28:45,071 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] ((((((((((((((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p2_EAX$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$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 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)))) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)))) && (! 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_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) [2024-06-28 04:28:45,071 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:28:45,072 INFO L106 edCorrectnessWitness]: ghost_update [L862-L862] multithreaded = 1; [2024-06-28 04:28:45,108 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:28:45,384 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:28:45,395 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 04:28:45,532 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:28:45,580 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:28:45,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:45 WrapperNode [2024-06-28 04:28:45,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:28:45,582 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:28:45,582 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:28:45,582 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:28:45,587 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:45" (1/1) ... [2024-06-28 04:28:45,614 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:45" (1/1) ... [2024-06-28 04:28:45,652 INFO L138 Inliner]: procedures = 175, calls = 90, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 251 [2024-06-28 04:28:45,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:28:45,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:28:45,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:28:45,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:28:45,666 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:45" (1/1) ... [2024-06-28 04:28:45,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:45" (1/1) ... [2024-06-28 04:28:45,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:45" (1/1) ... [2024-06-28 04:28:45,686 INFO L175 MemorySlicer]: Split 48 memory accesses to 2 slices as follows [2, 46]. 96 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 7 writes are split as follows [0, 7]. [2024-06-28 04:28:45,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:45" (1/1) ... [2024-06-28 04:28:45,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:45" (1/1) ... [2024-06-28 04:28:45,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:45" (1/1) ... [2024-06-28 04:28:45,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:45" (1/1) ... [2024-06-28 04:28:45,703 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:45" (1/1) ... [2024-06-28 04:28:45,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:45" (1/1) ... [2024-06-28 04:28:45,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:28:45,741 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:28:45,741 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:28:45,741 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:28:45,742 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:45" (1/1) ... [2024-06-28 04:28:45,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:28:45,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:28:45,771 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 04:28:45,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 04:28:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 04:28:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 04:28:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 04:28:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 04:28:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:28:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:28:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:28:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:28:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:28:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:28:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 04:28:45,803 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 04:28:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:28:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 04:28:45,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:28:45,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:28:45,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:28:45,806 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 04:28:45,944 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:28:45,946 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:28:46,438 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:28:46,438 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:28:46,818 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:28:46,818 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:28:46,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:28:46 BoogieIcfgContainer [2024-06-28 04:28:46,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:28:46,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:28:46,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:28:46,823 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:28:46,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:28:43" (1/4) ... [2024-06-28 04:28:46,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bf31ab and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:28:46, skipping insertion in model container [2024-06-28 04:28:46,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:28:44" (2/4) ... [2024-06-28 04:28:46,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bf31ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:28:46, skipping insertion in model container [2024-06-28 04:28:46,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:28:45" (3/4) ... [2024-06-28 04:28:46,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52bf31ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:28:46, skipping insertion in model container [2024-06-28 04:28:46,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:28:46" (4/4) ... [2024-06-28 04:28:46,825 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_power.i [2024-06-28 04:28:46,839 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:28:46,840 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 04:28:46,840 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:28:46,903 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:28:46,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 04:28:46,958 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-28 04:28:46,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:28:46,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 04:28:46,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 04:28:46,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-28 04:28:46,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:28:46,980 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;@3a9404bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:28:46,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 04:28:46,985 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:28:46,985 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 04:28:46,985 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:28:46,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:46,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:28:46,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:46,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:46,992 INFO L85 PathProgramCache]: Analyzing trace with hash 886037149, now seen corresponding path program 1 times [2024-06-28 04:28:46,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:46,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135836765] [2024-06-28 04:28:47,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:47,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:48,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:48,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135836765] [2024-06-28 04:28:48,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135836765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:48,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:48,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:28:48,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669519292] [2024-06-28 04:28:48,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:48,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:28:48,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:48,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:28:48,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:28:48,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 04:28:48,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:48,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:48,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 04:28:48,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:49,041 INFO L124 PetriNetUnfolderBase]: 990/1587 cut-off events. [2024-06-28 04:28:49,041 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 04:28:49,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3167 conditions, 1587 events. 990/1587 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7691 event pairs, 650 based on Foata normal form. 1/1559 useless extension candidates. Maximal degree in co-relation 3155. Up to 1503 conditions per place. [2024-06-28 04:28:49,053 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 34 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 04:28:49,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 181 flow [2024-06-28 04:28:49,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:28:49,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:28:49,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-06-28 04:28:49,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-06-28 04:28:49,063 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 71 transitions. [2024-06-28 04:28:49,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 181 flow [2024-06-28 04:28:49,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 176 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 04:28:49,069 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-28 04:28:49,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-28 04:28:49,073 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-28 04:28:49,073 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-28 04:28:49,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:49,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:49,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:49,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:28:49,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:49,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:49,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1078368882, now seen corresponding path program 1 times [2024-06-28 04:28:49,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:49,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590633318] [2024-06-28 04:28:49,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:49,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:50,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:50,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590633318] [2024-06-28 04:28:50,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590633318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:50,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:50,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 04:28:50,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675769030] [2024-06-28 04:28:50,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:50,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 04:28:50,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:50,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 04:28:50,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 04:28:50,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:28:50,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:50,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:50,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:28:50,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:50,567 INFO L124 PetriNetUnfolderBase]: 1148/1764 cut-off events. [2024-06-28 04:28:50,567 INFO L125 PetriNetUnfolderBase]: For 341/341 co-relation queries the response was YES. [2024-06-28 04:28:50,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4058 conditions, 1764 events. 1148/1764 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8249 event pairs, 521 based on Foata normal form. 6/1770 useless extension candidates. Maximal degree in co-relation 4046. Up to 1692 conditions per place. [2024-06-28 04:28:50,575 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 45 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-06-28 04:28:50,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 262 flow [2024-06-28 04:28:50,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:28:50,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:28:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-06-28 04:28:50,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 04:28:50,577 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 91 transitions. [2024-06-28 04:28:50,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 262 flow [2024-06-28 04:28:50,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:28:50,579 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 138 flow [2024-06-28 04:28:50,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-28 04:28:50,580 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-28 04:28:50,584 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 138 flow [2024-06-28 04:28:50,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:50,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:50,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:50,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:28:50,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:50,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:50,590 INFO L85 PathProgramCache]: Analyzing trace with hash 815707376, now seen corresponding path program 1 times [2024-06-28 04:28:50,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:50,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143258639] [2024-06-28 04:28:50,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:50,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:52,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:52,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143258639] [2024-06-28 04:28:52,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143258639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:52,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:52,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:28:52,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304861305] [2024-06-28 04:28:52,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:52,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:28:52,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:52,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:28:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:28:52,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:28:52,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:52,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:52,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:28:52,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:53,309 INFO L124 PetriNetUnfolderBase]: 1139/1749 cut-off events. [2024-06-28 04:28:53,309 INFO L125 PetriNetUnfolderBase]: For 964/964 co-relation queries the response was YES. [2024-06-28 04:28:53,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4493 conditions, 1749 events. 1139/1749 cut-off events. For 964/964 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8166 event pairs, 375 based on Foata normal form. 6/1755 useless extension candidates. Maximal degree in co-relation 4479. Up to 1639 conditions per place. [2024-06-28 04:28:53,317 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 58 selfloop transitions, 12 changer transitions 0/76 dead transitions. [2024-06-28 04:28:53,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 76 transitions, 380 flow [2024-06-28 04:28:53,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:28:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:28:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-28 04:28:53,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2024-06-28 04:28:53,325 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 138 flow. Second operand 6 states and 127 transitions. [2024-06-28 04:28:53,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 76 transitions, 380 flow [2024-06-28 04:28:53,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 360 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 04:28:53,328 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 181 flow [2024-06-28 04:28:53,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-28 04:28:53,329 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-06-28 04:28:53,329 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 181 flow [2024-06-28 04:28:53,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:53,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:53,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:53,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:28:53,330 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:53,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:53,330 INFO L85 PathProgramCache]: Analyzing trace with hash -61952462, now seen corresponding path program 1 times [2024-06-28 04:28:53,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:53,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771873688] [2024-06-28 04:28:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:53,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:54,558 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 04:28:54,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:54,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771873688] [2024-06-28 04:28:54,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771873688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:54,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:54,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:28:54,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359045295] [2024-06-28 04:28:54,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:54,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:28:54,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:54,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:28:54,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:28:54,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:28:54,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:54,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:54,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:28:54,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:55,153 INFO L124 PetriNetUnfolderBase]: 964/1547 cut-off events. [2024-06-28 04:28:55,154 INFO L125 PetriNetUnfolderBase]: For 1573/1573 co-relation queries the response was YES. [2024-06-28 04:28:55,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4327 conditions, 1547 events. 964/1547 cut-off events. For 1573/1573 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7416 event pairs, 382 based on Foata normal form. 2/1549 useless extension candidates. Maximal degree in co-relation 4310. Up to 1452 conditions per place. [2024-06-28 04:28:55,162 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 46 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2024-06-28 04:28:55,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 337 flow [2024-06-28 04:28:55,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:28:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:28:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-28 04:28:55,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-28 04:28:55,163 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 181 flow. Second operand 5 states and 93 transitions. [2024-06-28 04:28:55,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 337 flow [2024-06-28 04:28:55,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 310 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 04:28:55,166 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 198 flow [2024-06-28 04:28:55,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, 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=5, PETRI_FLOW=198, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-28 04:28:55,167 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-06-28 04:28:55,167 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 198 flow [2024-06-28 04:28:55,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:55,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:55,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:55,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:28:55,168 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:55,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:55,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1920524328, now seen corresponding path program 1 times [2024-06-28 04:28:55,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:55,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416366083] [2024-06-28 04:28:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:55,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:57,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:57,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416366083] [2024-06-28 04:28:57,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416366083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:57,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:57,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:28:57,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462644407] [2024-06-28 04:28:57,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:57,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:28:57,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:57,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:28:57,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:28:57,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:28:57,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:57,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:57,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:28:57,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:57,646 INFO L124 PetriNetUnfolderBase]: 959/1558 cut-off events. [2024-06-28 04:28:57,646 INFO L125 PetriNetUnfolderBase]: For 2224/2224 co-relation queries the response was YES. [2024-06-28 04:28:57,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4652 conditions, 1558 events. 959/1558 cut-off events. For 2224/2224 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7553 event pairs, 367 based on Foata normal form. 2/1560 useless extension candidates. Maximal degree in co-relation 4633. Up to 1434 conditions per place. [2024-06-28 04:28:57,655 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 51 selfloop transitions, 11 changer transitions 0/68 dead transitions. [2024-06-28 04:28:57,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 386 flow [2024-06-28 04:28:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:28:57,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:28:57,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-28 04:28:57,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 04:28:57,659 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 198 flow. Second operand 6 states and 110 transitions. [2024-06-28 04:28:57,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 386 flow [2024-06-28 04:28:57,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 366 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 04:28:57,664 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 232 flow [2024-06-28 04:28:57,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-28 04:28:57,666 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2024-06-28 04:28:57,666 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 232 flow [2024-06-28 04:28:57,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:57,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:57,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:57,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:28:57,667 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:57,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:57,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1828536349, now seen corresponding path program 1 times [2024-06-28 04:28:57,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:57,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644058009] [2024-06-28 04:28:57,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:57,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:28:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:28:59,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:28:59,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644058009] [2024-06-28 04:28:59,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644058009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:28:59,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:28:59,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:28:59,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598091181] [2024-06-28 04:28:59,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:28:59,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:28:59,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:28:59,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:28:59,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:28:59,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:28:59,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:59,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:28:59,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:28:59,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:28:59,828 INFO L124 PetriNetUnfolderBase]: 1170/1803 cut-off events. [2024-06-28 04:28:59,828 INFO L125 PetriNetUnfolderBase]: For 3780/3780 co-relation queries the response was YES. [2024-06-28 04:28:59,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5943 conditions, 1803 events. 1170/1803 cut-off events. For 3780/3780 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8413 event pairs, 447 based on Foata normal form. 4/1806 useless extension candidates. Maximal degree in co-relation 5923. Up to 1714 conditions per place. [2024-06-28 04:28:59,838 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 58 selfloop transitions, 16 changer transitions 0/79 dead transitions. [2024-06-28 04:28:59,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 485 flow [2024-06-28 04:28:59,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:28:59,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:28:59,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 04:28:59,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:28:59,840 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 232 flow. Second operand 7 states and 119 transitions. [2024-06-28 04:28:59,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 485 flow [2024-06-28 04:28:59,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 453 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 04:28:59,845 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 311 flow [2024-06-28 04:28:59,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=311, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2024-06-28 04:28:59,847 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2024-06-28 04:28:59,847 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 311 flow [2024-06-28 04:28:59,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:28:59,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:28:59,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:28:59,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:28:59,848 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:28:59,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:28:59,848 INFO L85 PathProgramCache]: Analyzing trace with hash -346224877, now seen corresponding path program 2 times [2024-06-28 04:28:59,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:28:59,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419421651] [2024-06-28 04:28:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:28:59,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:28:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:00,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:00,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:00,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419421651] [2024-06-28 04:29:00,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419421651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:00,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:00,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:29:00,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359266958] [2024-06-28 04:29:00,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:00,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:29:00,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:29:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:29:01,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:01,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:01,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:01,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:01,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:01,648 INFO L124 PetriNetUnfolderBase]: 1223/1898 cut-off events. [2024-06-28 04:29:01,648 INFO L125 PetriNetUnfolderBase]: For 5364/5364 co-relation queries the response was YES. [2024-06-28 04:29:01,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6798 conditions, 1898 events. 1223/1898 cut-off events. For 5364/5364 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 9034 event pairs, 428 based on Foata normal form. 4/1902 useless extension candidates. Maximal degree in co-relation 6775. Up to 1774 conditions per place. [2024-06-28 04:29:01,660 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 68 selfloop transitions, 24 changer transitions 0/97 dead transitions. [2024-06-28 04:29:01,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 652 flow [2024-06-28 04:29:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:29:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:29:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 04:29:01,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-06-28 04:29:01,662 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 311 flow. Second operand 7 states and 128 transitions. [2024-06-28 04:29:01,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 652 flow [2024-06-28 04:29:01,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 605 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-28 04:29:01,668 INFO L231 Difference]: Finished difference. Result has 66 places, 69 transitions, 433 flow [2024-06-28 04:29:01,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=66, PETRI_TRANSITIONS=69} [2024-06-28 04:29:01,669 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-06-28 04:29:01,669 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 433 flow [2024-06-28 04:29:01,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:01,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:01,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:01,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:29:01,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:01,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:01,670 INFO L85 PathProgramCache]: Analyzing trace with hash 593281073, now seen corresponding path program 3 times [2024-06-28 04:29:01,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:01,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429349409] [2024-06-28 04:29:01,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:01,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:03,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:03,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429349409] [2024-06-28 04:29:03,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429349409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:03,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:03,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:29:03,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519464032] [2024-06-28 04:29:03,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:03,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:29:03,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:03,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:29:03,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:29:03,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:03,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 433 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:03,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:03,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:03,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:03,681 INFO L124 PetriNetUnfolderBase]: 1231/1912 cut-off events. [2024-06-28 04:29:03,681 INFO L125 PetriNetUnfolderBase]: For 7340/7340 co-relation queries the response was YES. [2024-06-28 04:29:03,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7342 conditions, 1912 events. 1231/1912 cut-off events. For 7340/7340 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 9115 event pairs, 435 based on Foata normal form. 4/1915 useless extension candidates. Maximal degree in co-relation 7316. Up to 1731 conditions per place. [2024-06-28 04:29:03,693 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 58 selfloop transitions, 29 changer transitions 0/92 dead transitions. [2024-06-28 04:29:03,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 697 flow [2024-06-28 04:29:03,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:29:03,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:29:03,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 04:29:03,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43253968253968256 [2024-06-28 04:29:03,694 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 433 flow. Second operand 6 states and 109 transitions. [2024-06-28 04:29:03,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 697 flow [2024-06-28 04:29:03,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 92 transitions, 647 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 04:29:03,699 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 487 flow [2024-06-28 04:29:03,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=487, PETRI_PLACES=68, PETRI_TRANSITIONS=72} [2024-06-28 04:29:03,699 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-06-28 04:29:03,699 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 487 flow [2024-06-28 04:29:03,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:03,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:03,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:03,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:29:03,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:03,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:03,700 INFO L85 PathProgramCache]: Analyzing trace with hash 593290001, now seen corresponding path program 1 times [2024-06-28 04:29:03,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:03,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564932651] [2024-06-28 04:29:03,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:03,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:05,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:05,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564932651] [2024-06-28 04:29:05,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564932651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:05,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:05,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:29:05,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103860855] [2024-06-28 04:29:05,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:05,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:29:05,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:05,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:29:05,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:29:05,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:29:05,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 72 transitions, 487 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:05,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:05,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:29:05,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:06,317 INFO L124 PetriNetUnfolderBase]: 1053/1680 cut-off events. [2024-06-28 04:29:06,317 INFO L125 PetriNetUnfolderBase]: For 8289/8289 co-relation queries the response was YES. [2024-06-28 04:29:06,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6812 conditions, 1680 events. 1053/1680 cut-off events. For 8289/8289 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8280 event pairs, 528 based on Foata normal form. 4/1674 useless extension candidates. Maximal degree in co-relation 6785. Up to 1550 conditions per place. [2024-06-28 04:29:06,327 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 78 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-06-28 04:29:06,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 98 transitions, 763 flow [2024-06-28 04:29:06,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:29:06,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:29:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 04:29:06,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43197278911564624 [2024-06-28 04:29:06,329 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 487 flow. Second operand 7 states and 127 transitions. [2024-06-28 04:29:06,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 98 transitions, 763 flow [2024-06-28 04:29:06,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 98 transitions, 683 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 04:29:06,334 INFO L231 Difference]: Finished difference. Result has 71 places, 74 transitions, 472 flow [2024-06-28 04:29:06,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=472, PETRI_PLACES=71, PETRI_TRANSITIONS=74} [2024-06-28 04:29:06,335 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-06-28 04:29:06,335 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 74 transitions, 472 flow [2024-06-28 04:29:06,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:06,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:06,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:06,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:29:06,336 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:06,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1076509839, now seen corresponding path program 1 times [2024-06-28 04:29:06,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:06,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016910821] [2024-06-28 04:29:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:06,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:07,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:07,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016910821] [2024-06-28 04:29:07,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016910821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:07,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:07,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:29:07,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532282255] [2024-06-28 04:29:07,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:07,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:29:07,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:07,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:29:07,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:29:07,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:07,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 74 transitions, 472 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 04:29:07,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:07,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:07,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:08,589 INFO L124 PetriNetUnfolderBase]: 1249/1942 cut-off events. [2024-06-28 04:29:08,589 INFO L125 PetriNetUnfolderBase]: For 10476/10476 co-relation queries the response was YES. [2024-06-28 04:29:08,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8011 conditions, 1942 events. 1249/1942 cut-off events. For 10476/10476 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 9266 event pairs, 406 based on Foata normal form. 4/1946 useless extension candidates. Maximal degree in co-relation 7983. Up to 1782 conditions per place. [2024-06-28 04:29:08,597 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 78 selfloop transitions, 28 changer transitions 0/111 dead transitions. [2024-06-28 04:29:08,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 111 transitions, 814 flow [2024-06-28 04:29:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:29:08,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:29:08,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:29:08,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-28 04:29:08,601 INFO L175 Difference]: Start difference. First operand has 71 places, 74 transitions, 472 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:29:08,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 111 transitions, 814 flow [2024-06-28 04:29:08,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 111 transitions, 767 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 04:29:08,606 INFO L231 Difference]: Finished difference. Result has 74 places, 78 transitions, 537 flow [2024-06-28 04:29:08,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=537, PETRI_PLACES=74, PETRI_TRANSITIONS=78} [2024-06-28 04:29:08,607 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-06-28 04:29:08,607 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 78 transitions, 537 flow [2024-06-28 04:29:08,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 04:29:08,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:08,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:08,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:29:08,608 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:08,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:08,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1865256455, now seen corresponding path program 2 times [2024-06-28 04:29:08,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:08,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657063577] [2024-06-28 04:29:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:08,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:10,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:10,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:10,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657063577] [2024-06-28 04:29:10,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657063577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:10,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:10,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:29:10,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123727953] [2024-06-28 04:29:10,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:10,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:29:10,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:10,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:29:10,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:29:10,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:10,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 78 transitions, 537 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 04:29:10,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:10,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:10,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:11,047 INFO L124 PetriNetUnfolderBase]: 1275/1986 cut-off events. [2024-06-28 04:29:11,047 INFO L125 PetriNetUnfolderBase]: For 12969/12969 co-relation queries the response was YES. [2024-06-28 04:29:11,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8775 conditions, 1986 events. 1275/1986 cut-off events. For 12969/12969 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 9480 event pairs, 406 based on Foata normal form. 4/1990 useless extension candidates. Maximal degree in co-relation 8746. Up to 1776 conditions per place. [2024-06-28 04:29:11,057 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 71 selfloop transitions, 33 changer transitions 0/109 dead transitions. [2024-06-28 04:29:11,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 869 flow [2024-06-28 04:29:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:29:11,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:29:11,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 04:29:11,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43197278911564624 [2024-06-28 04:29:11,059 INFO L175 Difference]: Start difference. First operand has 74 places, 78 transitions, 537 flow. Second operand 7 states and 127 transitions. [2024-06-28 04:29:11,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 869 flow [2024-06-28 04:29:11,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 109 transitions, 789 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 04:29:11,067 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 592 flow [2024-06-28 04:29:11,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=592, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-06-28 04:29:11,067 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-06-28 04:29:11,067 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 592 flow [2024-06-28 04:29:11,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 04:29:11,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:11,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:11,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:29:11,068 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:11,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:11,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1212112983, now seen corresponding path program 3 times [2024-06-28 04:29:11,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:11,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099751947] [2024-06-28 04:29:11,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:11,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:12,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:12,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099751947] [2024-06-28 04:29:12,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099751947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:12,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:12,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:29:12,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15036522] [2024-06-28 04:29:12,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:12,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:29:12,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:12,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:29:12,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:29:12,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:12,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 592 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 04:29:12,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:12,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:12,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:13,445 INFO L124 PetriNetUnfolderBase]: 1288/2000 cut-off events. [2024-06-28 04:29:13,445 INFO L125 PetriNetUnfolderBase]: For 15768/15768 co-relation queries the response was YES. [2024-06-28 04:29:13,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9451 conditions, 2000 events. 1288/2000 cut-off events. For 15768/15768 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 9540 event pairs, 413 based on Foata normal form. 2/2001 useless extension candidates. Maximal degree in co-relation 9421. Up to 1793 conditions per place. [2024-06-28 04:29:13,457 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 81 selfloop transitions, 40 changer transitions 0/126 dead transitions. [2024-06-28 04:29:13,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 126 transitions, 1145 flow [2024-06-28 04:29:13,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:29:13,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:29:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 04:29:13,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:29:13,460 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 592 flow. Second operand 7 states and 126 transitions. [2024-06-28 04:29:13,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 126 transitions, 1145 flow [2024-06-28 04:29:13,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 126 transitions, 997 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 04:29:13,469 INFO L231 Difference]: Finished difference. Result has 79 places, 101 transitions, 797 flow [2024-06-28 04:29:13,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=797, PETRI_PLACES=79, PETRI_TRANSITIONS=101} [2024-06-28 04:29:13,470 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-06-28 04:29:13,470 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 101 transitions, 797 flow [2024-06-28 04:29:13,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 04:29:13,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:13,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:13,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:29:13,470 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:13,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:13,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1211846073, now seen corresponding path program 4 times [2024-06-28 04:29:13,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:13,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353349587] [2024-06-28 04:29:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:13,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:15,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:15,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353349587] [2024-06-28 04:29:15,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353349587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:15,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:15,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:29:15,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130623603] [2024-06-28 04:29:15,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:15,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:29:15,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:15,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:29:15,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:29:15,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:15,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 101 transitions, 797 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 04:29:15,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:15,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:15,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:15,919 INFO L124 PetriNetUnfolderBase]: 1296/2012 cut-off events. [2024-06-28 04:29:15,920 INFO L125 PetriNetUnfolderBase]: For 15375/15375 co-relation queries the response was YES. [2024-06-28 04:29:15,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9483 conditions, 2012 events. 1296/2012 cut-off events. For 15375/15375 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 9548 event pairs, 413 based on Foata normal form. 4/2015 useless extension candidates. Maximal degree in co-relation 9450. Up to 1804 conditions per place. [2024-06-28 04:29:15,930 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 80 selfloop transitions, 43 changer transitions 0/128 dead transitions. [2024-06-28 04:29:15,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 128 transitions, 1160 flow [2024-06-28 04:29:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:29:15,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:29:15,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 04:29:15,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:29:15,932 INFO L175 Difference]: Start difference. First operand has 79 places, 101 transitions, 797 flow. Second operand 7 states and 126 transitions. [2024-06-28 04:29:15,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 128 transitions, 1160 flow [2024-06-28 04:29:15,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 128 transitions, 1077 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 04:29:15,946 INFO L231 Difference]: Finished difference. Result has 83 places, 104 transitions, 866 flow [2024-06-28 04:29:15,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=866, PETRI_PLACES=83, PETRI_TRANSITIONS=104} [2024-06-28 04:29:15,947 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-06-28 04:29:15,947 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 104 transitions, 866 flow [2024-06-28 04:29:15,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 04:29:15,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:15,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:15,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:29:15,948 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:15,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:15,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2031286916, now seen corresponding path program 1 times [2024-06-28 04:29:15,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:15,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626433016] [2024-06-28 04:29:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:15,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:17,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:17,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626433016] [2024-06-28 04:29:17,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626433016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:17,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:17,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:29:17,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770809321] [2024-06-28 04:29:17,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:17,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:29:17,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:17,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:29:17,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:29:17,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:17,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 104 transitions, 866 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 04:29:17,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:17,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:17,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:18,424 INFO L124 PetriNetUnfolderBase]: 1339/2092 cut-off events. [2024-06-28 04:29:18,424 INFO L125 PetriNetUnfolderBase]: For 17733/17733 co-relation queries the response was YES. [2024-06-28 04:29:18,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10134 conditions, 2092 events. 1339/2092 cut-off events. For 17733/17733 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 10153 event pairs, 388 based on Foata normal form. 2/2094 useless extension candidates. Maximal degree in co-relation 10100. Up to 1926 conditions per place. [2024-06-28 04:29:18,435 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 114 selfloop transitions, 30 changer transitions 0/149 dead transitions. [2024-06-28 04:29:18,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 149 transitions, 1334 flow [2024-06-28 04:29:18,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:29:18,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:29:18,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 04:29:18,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:29:18,437 INFO L175 Difference]: Start difference. First operand has 83 places, 104 transitions, 866 flow. Second operand 8 states and 147 transitions. [2024-06-28 04:29:18,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 149 transitions, 1334 flow [2024-06-28 04:29:18,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 149 transitions, 1212 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 04:29:18,448 INFO L231 Difference]: Finished difference. Result has 87 places, 115 transitions, 919 flow [2024-06-28 04:29:18,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=919, PETRI_PLACES=87, PETRI_TRANSITIONS=115} [2024-06-28 04:29:18,450 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2024-06-28 04:29:18,450 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 115 transitions, 919 flow [2024-06-28 04:29:18,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 04:29:18,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:18,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:18,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:29:18,451 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:18,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:18,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1551041840, now seen corresponding path program 2 times [2024-06-28 04:29:18,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:18,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075021600] [2024-06-28 04:29:18,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:18,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:20,012 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 04:29:20,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:20,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075021600] [2024-06-28 04:29:20,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075021600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:20,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:20,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:29:20,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953811803] [2024-06-28 04:29:20,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:20,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:29:20,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:20,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:29:20,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:29:20,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:20,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 115 transitions, 919 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 04:29:20,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:20,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:20,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:20,833 INFO L124 PetriNetUnfolderBase]: 1383/2157 cut-off events. [2024-06-28 04:29:20,834 INFO L125 PetriNetUnfolderBase]: For 21272/21272 co-relation queries the response was YES. [2024-06-28 04:29:20,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10932 conditions, 2157 events. 1383/2157 cut-off events. For 21272/21272 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 10445 event pairs, 388 based on Foata normal form. 4/2161 useless extension candidates. Maximal degree in co-relation 10896. Up to 1965 conditions per place. [2024-06-28 04:29:20,845 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 120 selfloop transitions, 36 changer transitions 0/161 dead transitions. [2024-06-28 04:29:20,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 161 transitions, 1487 flow [2024-06-28 04:29:20,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:29:20,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:29:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 04:29:20,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 04:29:20,847 INFO L175 Difference]: Start difference. First operand has 87 places, 115 transitions, 919 flow. Second operand 8 states and 148 transitions. [2024-06-28 04:29:20,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 161 transitions, 1487 flow [2024-06-28 04:29:20,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 161 transitions, 1367 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-28 04:29:20,860 INFO L231 Difference]: Finished difference. Result has 93 places, 124 transitions, 1043 flow [2024-06-28 04:29:20,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1043, PETRI_PLACES=93, PETRI_TRANSITIONS=124} [2024-06-28 04:29:20,861 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 50 predicate places. [2024-06-28 04:29:20,861 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 124 transitions, 1043 flow [2024-06-28 04:29:20,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 04:29:20,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:20,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:20,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:29:20,862 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:20,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:20,862 INFO L85 PathProgramCache]: Analyzing trace with hash -996868634, now seen corresponding path program 1 times [2024-06-28 04:29:20,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:20,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062589726] [2024-06-28 04:29:20,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:20,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:22,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:22,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062589726] [2024-06-28 04:29:22,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062589726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:22,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:22,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:29:22,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480953325] [2024-06-28 04:29:22,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:22,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:29:22,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:22,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:29:22,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:29:22,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:22,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 124 transitions, 1043 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:22,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:22,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:22,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:23,627 INFO L124 PetriNetUnfolderBase]: 1491/2338 cut-off events. [2024-06-28 04:29:23,628 INFO L125 PetriNetUnfolderBase]: For 30167/30167 co-relation queries the response was YES. [2024-06-28 04:29:23,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12345 conditions, 2338 events. 1491/2338 cut-off events. For 30167/30167 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11700 event pairs, 408 based on Foata normal form. 24/2362 useless extension candidates. Maximal degree in co-relation 12307. Up to 1988 conditions per place. [2024-06-28 04:29:23,639 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 128 selfloop transitions, 36 changer transitions 0/169 dead transitions. [2024-06-28 04:29:23,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 169 transitions, 1580 flow [2024-06-28 04:29:23,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:29:23,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:29:23,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 04:29:23,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 04:29:23,641 INFO L175 Difference]: Start difference. First operand has 93 places, 124 transitions, 1043 flow. Second operand 9 states and 165 transitions. [2024-06-28 04:29:23,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 169 transitions, 1580 flow [2024-06-28 04:29:23,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 169 transitions, 1485 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 04:29:23,658 INFO L231 Difference]: Finished difference. Result has 97 places, 126 transitions, 1071 flow [2024-06-28 04:29:23,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1071, PETRI_PLACES=97, PETRI_TRANSITIONS=126} [2024-06-28 04:29:23,659 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-06-28 04:29:23,659 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 126 transitions, 1071 flow [2024-06-28 04:29:23,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:23,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:23,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:23,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:29:23,659 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:23,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:23,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1988192708, now seen corresponding path program 3 times [2024-06-28 04:29:23,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:23,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167650435] [2024-06-28 04:29:23,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:23,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:25,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:25,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167650435] [2024-06-28 04:29:25,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167650435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:25,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:25,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:29:25,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508832384] [2024-06-28 04:29:25,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:25,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:29:25,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:25,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:29:25,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:29:25,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:25,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 126 transitions, 1071 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 04:29:25,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:25,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:25,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:26,394 INFO L124 PetriNetUnfolderBase]: 1486/2331 cut-off events. [2024-06-28 04:29:26,395 INFO L125 PetriNetUnfolderBase]: For 30514/30514 co-relation queries the response was YES. [2024-06-28 04:29:26,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12514 conditions, 2331 events. 1486/2331 cut-off events. For 30514/30514 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 11659 event pairs, 398 based on Foata normal form. 2/2333 useless extension candidates. Maximal degree in co-relation 12475. Up to 2131 conditions per place. [2024-06-28 04:29:26,407 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 117 selfloop transitions, 38 changer transitions 0/160 dead transitions. [2024-06-28 04:29:26,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 160 transitions, 1565 flow [2024-06-28 04:29:26,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:29:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:29:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 04:29:26,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-06-28 04:29:26,409 INFO L175 Difference]: Start difference. First operand has 97 places, 126 transitions, 1071 flow. Second operand 7 states and 129 transitions. [2024-06-28 04:29:26,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 160 transitions, 1565 flow [2024-06-28 04:29:26,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 160 transitions, 1494 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 04:29:26,430 INFO L231 Difference]: Finished difference. Result has 97 places, 131 transitions, 1192 flow [2024-06-28 04:29:26,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1192, PETRI_PLACES=97, PETRI_TRANSITIONS=131} [2024-06-28 04:29:26,430 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-06-28 04:29:26,430 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 131 transitions, 1192 flow [2024-06-28 04:29:26,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 04:29:26,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:26,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:26,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:29:26,431 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:26,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:26,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1988377282, now seen corresponding path program 2 times [2024-06-28 04:29:26,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:26,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120690648] [2024-06-28 04:29:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:26,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:28,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:28,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120690648] [2024-06-28 04:29:28,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120690648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:28,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:28,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:29:28,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329780282] [2024-06-28 04:29:28,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:28,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:29:28,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:28,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:29:28,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:29:28,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:28,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 131 transitions, 1192 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:28,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:28,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:28,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:29,388 INFO L124 PetriNetUnfolderBase]: 1594/2511 cut-off events. [2024-06-28 04:29:29,389 INFO L125 PetriNetUnfolderBase]: For 40011/40011 co-relation queries the response was YES. [2024-06-28 04:29:29,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14023 conditions, 2511 events. 1594/2511 cut-off events. For 40011/40011 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 12810 event pairs, 420 based on Foata normal form. 24/2535 useless extension candidates. Maximal degree in co-relation 13983. Up to 1949 conditions per place. [2024-06-28 04:29:29,401 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 118 selfloop transitions, 47 changer transitions 0/170 dead transitions. [2024-06-28 04:29:29,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 170 transitions, 1725 flow [2024-06-28 04:29:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:29:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:29:29,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 04:29:29,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:29:29,405 INFO L175 Difference]: Start difference. First operand has 97 places, 131 transitions, 1192 flow. Second operand 8 states and 147 transitions. [2024-06-28 04:29:29,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 170 transitions, 1725 flow [2024-06-28 04:29:29,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 170 transitions, 1603 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 04:29:29,428 INFO L231 Difference]: Finished difference. Result has 100 places, 133 transitions, 1227 flow [2024-06-28 04:29:29,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1227, PETRI_PLACES=100, PETRI_TRANSITIONS=133} [2024-06-28 04:29:29,429 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2024-06-28 04:29:29,429 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 133 transitions, 1227 flow [2024-06-28 04:29:29,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:29,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:29,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:29,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:29:29,430 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:29,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:29,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1087475376, now seen corresponding path program 3 times [2024-06-28 04:29:29,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:29,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849683401] [2024-06-28 04:29:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:29,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:31,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:31,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:31,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849683401] [2024-06-28 04:29:31,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849683401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:31,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:31,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:29:31,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687623749] [2024-06-28 04:29:31,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:31,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:29:31,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:31,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:29:31,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:29:31,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:31,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 133 transitions, 1227 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:31,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:31,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:31,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:32,384 INFO L124 PetriNetUnfolderBase]: 1702/2688 cut-off events. [2024-06-28 04:29:32,384 INFO L125 PetriNetUnfolderBase]: For 47465/47465 co-relation queries the response was YES. [2024-06-28 04:29:32,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15452 conditions, 2688 events. 1702/2688 cut-off events. For 47465/47465 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 14050 event pairs, 441 based on Foata normal form. 24/2711 useless extension candidates. Maximal degree in co-relation 15411. Up to 2298 conditions per place. [2024-06-28 04:29:32,404 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 119 selfloop transitions, 45 changer transitions 0/169 dead transitions. [2024-06-28 04:29:32,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 169 transitions, 1754 flow [2024-06-28 04:29:32,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:29:32,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:29:32,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 04:29:32,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-28 04:29:32,406 INFO L175 Difference]: Start difference. First operand has 100 places, 133 transitions, 1227 flow. Second operand 8 states and 146 transitions. [2024-06-28 04:29:32,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 169 transitions, 1754 flow [2024-06-28 04:29:32,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 169 transitions, 1641 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 04:29:32,439 INFO L231 Difference]: Finished difference. Result has 102 places, 135 transitions, 1264 flow [2024-06-28 04:29:32,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1264, PETRI_PLACES=102, PETRI_TRANSITIONS=135} [2024-06-28 04:29:32,439 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2024-06-28 04:29:32,440 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 135 transitions, 1264 flow [2024-06-28 04:29:32,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:32,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:32,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:32,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:29:32,440 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:32,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:32,441 INFO L85 PathProgramCache]: Analyzing trace with hash -187026460, now seen corresponding path program 4 times [2024-06-28 04:29:32,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:32,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616756599] [2024-06-28 04:29:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:32,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:34,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:34,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616756599] [2024-06-28 04:29:34,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616756599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:34,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:34,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:29:34,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677116474] [2024-06-28 04:29:34,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:34,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:29:34,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:34,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:29:34,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:29:34,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:34,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 135 transitions, 1264 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:34,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:34,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:34,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:35,813 INFO L124 PetriNetUnfolderBase]: 1722/2732 cut-off events. [2024-06-28 04:29:35,813 INFO L125 PetriNetUnfolderBase]: For 44020/44020 co-relation queries the response was YES. [2024-06-28 04:29:35,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15571 conditions, 2732 events. 1722/2732 cut-off events. For 44020/44020 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14331 event pairs, 447 based on Foata normal form. 4/2735 useless extension candidates. Maximal degree in co-relation 15529. Up to 2234 conditions per place. [2024-06-28 04:29:35,829 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 106 selfloop transitions, 65 changer transitions 0/176 dead transitions. [2024-06-28 04:29:35,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 176 transitions, 1823 flow [2024-06-28 04:29:35,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:29:35,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:29:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 04:29:35,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-06-28 04:29:35,831 INFO L175 Difference]: Start difference. First operand has 102 places, 135 transitions, 1264 flow. Second operand 9 states and 164 transitions. [2024-06-28 04:29:35,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 176 transitions, 1823 flow [2024-06-28 04:29:35,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 176 transitions, 1729 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 04:29:35,860 INFO L231 Difference]: Finished difference. Result has 105 places, 137 transitions, 1363 flow [2024-06-28 04:29:35,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1363, PETRI_PLACES=105, PETRI_TRANSITIONS=137} [2024-06-28 04:29:35,860 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2024-06-28 04:29:35,860 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 137 transitions, 1363 flow [2024-06-28 04:29:35,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:35,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:35,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:35,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:29:35,861 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:35,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:35,861 INFO L85 PathProgramCache]: Analyzing trace with hash -186729790, now seen corresponding path program 5 times [2024-06-28 04:29:35,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:35,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606302772] [2024-06-28 04:29:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:35,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:37,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:37,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:37,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606302772] [2024-06-28 04:29:37,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606302772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:37,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:37,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:29:37,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028418087] [2024-06-28 04:29:37,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:37,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:29:37,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:37,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:29:37,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:29:38,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:38,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 137 transitions, 1363 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:38,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:38,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:38,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:38,809 INFO L124 PetriNetUnfolderBase]: 1714/2720 cut-off events. [2024-06-28 04:29:38,809 INFO L125 PetriNetUnfolderBase]: For 46004/46004 co-relation queries the response was YES. [2024-06-28 04:29:38,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15769 conditions, 2720 events. 1714/2720 cut-off events. For 46004/46004 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14142 event pairs, 409 based on Foata normal form. 4/2723 useless extension candidates. Maximal degree in co-relation 15726. Up to 1832 conditions per place. [2024-06-28 04:29:38,827 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 97 selfloop transitions, 71 changer transitions 0/173 dead transitions. [2024-06-28 04:29:38,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 173 transitions, 1899 flow [2024-06-28 04:29:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:29:38,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:29:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 04:29:38,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:29:38,829 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 1363 flow. Second operand 8 states and 147 transitions. [2024-06-28 04:29:38,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 173 transitions, 1899 flow [2024-06-28 04:29:38,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 173 transitions, 1756 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 04:29:38,862 INFO L231 Difference]: Finished difference. Result has 106 places, 139 transitions, 1423 flow [2024-06-28 04:29:38,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1423, PETRI_PLACES=106, PETRI_TRANSITIONS=139} [2024-06-28 04:29:38,863 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2024-06-28 04:29:38,863 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 139 transitions, 1423 flow [2024-06-28 04:29:38,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:38,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:38,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:38,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:29:38,864 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:38,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:38,864 INFO L85 PathProgramCache]: Analyzing trace with hash 173596037, now seen corresponding path program 1 times [2024-06-28 04:29:38,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:38,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949847437] [2024-06-28 04:29:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:38,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:40,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:40,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949847437] [2024-06-28 04:29:40,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949847437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:40,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:40,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:29:40,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428350426] [2024-06-28 04:29:40,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:40,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:29:40,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:40,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:29:40,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:29:40,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:29:40,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 139 transitions, 1423 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:40,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:40,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:29:40,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:41,073 INFO L124 PetriNetUnfolderBase]: 1538/2507 cut-off events. [2024-06-28 04:29:41,073 INFO L125 PetriNetUnfolderBase]: For 40741/40741 co-relation queries the response was YES. [2024-06-28 04:29:41,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14418 conditions, 2507 events. 1538/2507 cut-off events. For 40741/40741 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 13611 event pairs, 612 based on Foata normal form. 2/2498 useless extension candidates. Maximal degree in co-relation 14374. Up to 2369 conditions per place. [2024-06-28 04:29:41,088 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 137 selfloop transitions, 9 changer transitions 0/152 dead transitions. [2024-06-28 04:29:41,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 152 transitions, 1765 flow [2024-06-28 04:29:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:29:41,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:29:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-28 04:29:41,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-28 04:29:41,089 INFO L175 Difference]: Start difference. First operand has 106 places, 139 transitions, 1423 flow. Second operand 5 states and 89 transitions. [2024-06-28 04:29:41,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 152 transitions, 1765 flow [2024-06-28 04:29:41,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 152 transitions, 1584 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 04:29:41,120 INFO L231 Difference]: Finished difference. Result has 105 places, 142 transitions, 1292 flow [2024-06-28 04:29:41,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1292, PETRI_PLACES=105, PETRI_TRANSITIONS=142} [2024-06-28 04:29:41,121 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2024-06-28 04:29:41,121 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 142 transitions, 1292 flow [2024-06-28 04:29:41,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:41,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:41,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:41,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:29:41,121 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:41,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:41,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1393123798, now seen corresponding path program 1 times [2024-06-28 04:29:41,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:41,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285547798] [2024-06-28 04:29:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:41,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:43,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:43,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285547798] [2024-06-28 04:29:43,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285547798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:43,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:43,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:29:43,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190353873] [2024-06-28 04:29:43,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:43,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:29:43,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:43,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:29:43,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:29:43,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:43,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 142 transitions, 1292 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:43,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:43,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:43,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:44,242 INFO L124 PetriNetUnfolderBase]: 1727/2748 cut-off events. [2024-06-28 04:29:44,242 INFO L125 PetriNetUnfolderBase]: For 45283/45283 co-relation queries the response was YES. [2024-06-28 04:29:44,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15862 conditions, 2748 events. 1727/2748 cut-off events. For 45283/45283 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14497 event pairs, 405 based on Foata normal form. 2/2750 useless extension candidates. Maximal degree in co-relation 15817. Up to 2535 conditions per place. [2024-06-28 04:29:44,257 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 140 selfloop transitions, 41 changer transitions 0/186 dead transitions. [2024-06-28 04:29:44,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 186 transitions, 1864 flow [2024-06-28 04:29:44,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:29:44,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:29:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 04:29:44,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-28 04:29:44,259 INFO L175 Difference]: Start difference. First operand has 105 places, 142 transitions, 1292 flow. Second operand 9 states and 163 transitions. [2024-06-28 04:29:44,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 186 transitions, 1864 flow [2024-06-28 04:29:44,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 186 transitions, 1836 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 04:29:44,290 INFO L231 Difference]: Finished difference. Result has 111 places, 148 transitions, 1459 flow [2024-06-28 04:29:44,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1459, PETRI_PLACES=111, PETRI_TRANSITIONS=148} [2024-06-28 04:29:44,290 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 68 predicate places. [2024-06-28 04:29:44,291 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 148 transitions, 1459 flow [2024-06-28 04:29:44,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:44,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:44,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:44,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:29:44,291 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:44,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:44,292 INFO L85 PathProgramCache]: Analyzing trace with hash -838162462, now seen corresponding path program 2 times [2024-06-28 04:29:44,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:44,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493356769] [2024-06-28 04:29:44,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:44,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:46,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:46,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493356769] [2024-06-28 04:29:46,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493356769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:46,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:46,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:29:46,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282607505] [2024-06-28 04:29:46,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:46,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:29:46,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:46,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:29:46,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:29:46,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:46,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 148 transitions, 1459 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:46,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:46,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:46,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:47,975 INFO L124 PetriNetUnfolderBase]: 1740/2768 cut-off events. [2024-06-28 04:29:47,975 INFO L125 PetriNetUnfolderBase]: For 50419/50419 co-relation queries the response was YES. [2024-06-28 04:29:47,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16618 conditions, 2768 events. 1740/2768 cut-off events. For 50419/50419 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14601 event pairs, 421 based on Foata normal form. 2/2770 useless extension candidates. Maximal degree in co-relation 16572. Up to 2561 conditions per place. [2024-06-28 04:29:47,992 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 151 selfloop transitions, 38 changer transitions 0/194 dead transitions. [2024-06-28 04:29:47,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 194 transitions, 2058 flow [2024-06-28 04:29:47,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:29:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:29:47,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 04:29:47,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-28 04:29:47,994 INFO L175 Difference]: Start difference. First operand has 111 places, 148 transitions, 1459 flow. Second operand 10 states and 176 transitions. [2024-06-28 04:29:47,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 194 transitions, 2058 flow [2024-06-28 04:29:48,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 194 transitions, 1917 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 04:29:48,029 INFO L231 Difference]: Finished difference. Result has 115 places, 152 transitions, 1498 flow [2024-06-28 04:29:48,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1498, PETRI_PLACES=115, PETRI_TRANSITIONS=152} [2024-06-28 04:29:48,030 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 72 predicate places. [2024-06-28 04:29:48,030 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 152 transitions, 1498 flow [2024-06-28 04:29:48,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:48,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:48,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:48,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:29:48,030 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:48,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:48,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1362330728, now seen corresponding path program 3 times [2024-06-28 04:29:48,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:48,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131714434] [2024-06-28 04:29:48,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:48,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:50,225 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 04:29:50,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:50,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131714434] [2024-06-28 04:29:50,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131714434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:50,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:50,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:29:50,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446639626] [2024-06-28 04:29:50,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:50,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:29:50,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:50,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:29:50,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:29:50,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:50,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 152 transitions, 1498 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:50,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:50,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:50,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:51,214 INFO L124 PetriNetUnfolderBase]: 1753/2792 cut-off events. [2024-06-28 04:29:51,214 INFO L125 PetriNetUnfolderBase]: For 56356/56356 co-relation queries the response was YES. [2024-06-28 04:29:51,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17195 conditions, 2792 events. 1753/2792 cut-off events. For 56356/56356 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14810 event pairs, 405 based on Foata normal form. 2/2794 useless extension candidates. Maximal degree in co-relation 17147. Up to 2529 conditions per place. [2024-06-28 04:29:51,233 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 134 selfloop transitions, 50 changer transitions 0/189 dead transitions. [2024-06-28 04:29:51,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 189 transitions, 2062 flow [2024-06-28 04:29:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:29:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:29:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:29:51,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-28 04:29:51,235 INFO L175 Difference]: Start difference. First operand has 115 places, 152 transitions, 1498 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:29:51,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 189 transitions, 2062 flow [2024-06-28 04:29:51,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 189 transitions, 1914 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 04:29:51,276 INFO L231 Difference]: Finished difference. Result has 116 places, 155 transitions, 1556 flow [2024-06-28 04:29:51,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1556, PETRI_PLACES=116, PETRI_TRANSITIONS=155} [2024-06-28 04:29:51,276 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2024-06-28 04:29:51,277 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 155 transitions, 1556 flow [2024-06-28 04:29:51,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:51,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:51,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:51,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 04:29:51,277 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:51,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1510147718, now seen corresponding path program 4 times [2024-06-28 04:29:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:51,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143136903] [2024-06-28 04:29:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:51,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:53,355 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 04:29:53,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:53,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143136903] [2024-06-28 04:29:53,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143136903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:53,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:53,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:29:53,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260661922] [2024-06-28 04:29:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:53,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:29:53,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:53,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:29:53,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:29:53,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:53,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 155 transitions, 1556 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:53,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:53,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:53,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:54,422 INFO L124 PetriNetUnfolderBase]: 1766/2814 cut-off events. [2024-06-28 04:29:54,422 INFO L125 PetriNetUnfolderBase]: For 62024/62024 co-relation queries the response was YES. [2024-06-28 04:29:54,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17843 conditions, 2814 events. 1766/2814 cut-off events. For 62024/62024 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14945 event pairs, 411 based on Foata normal form. 2/2816 useless extension candidates. Maximal degree in co-relation 17794. Up to 2416 conditions per place. [2024-06-28 04:29:54,438 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 106 selfloop transitions, 79 changer transitions 0/190 dead transitions. [2024-06-28 04:29:54,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 190 transitions, 2127 flow [2024-06-28 04:29:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:29:54,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:29:54,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 04:29:54,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:29:54,439 INFO L175 Difference]: Start difference. First operand has 116 places, 155 transitions, 1556 flow. Second operand 8 states and 144 transitions. [2024-06-28 04:29:54,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 190 transitions, 2127 flow [2024-06-28 04:29:54,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 190 transitions, 1953 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 04:29:54,493 INFO L231 Difference]: Finished difference. Result has 118 places, 158 transitions, 1646 flow [2024-06-28 04:29:54,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1646, PETRI_PLACES=118, PETRI_TRANSITIONS=158} [2024-06-28 04:29:54,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2024-06-28 04:29:54,494 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 158 transitions, 1646 flow [2024-06-28 04:29:54,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:54,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:54,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:54,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 04:29:54,494 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:54,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:54,495 INFO L85 PathProgramCache]: Analyzing trace with hash 647995832, now seen corresponding path program 5 times [2024-06-28 04:29:54,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:54,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694697794] [2024-06-28 04:29:54,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:54,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:29:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:29:56,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:29:56,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694697794] [2024-06-28 04:29:56,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694697794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:29:56,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:29:56,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:29:56,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258045270] [2024-06-28 04:29:56,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:29:56,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:29:56,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:29:56,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:29:56,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:29:56,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:29:56,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 158 transitions, 1646 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:56,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:29:56,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:29:56,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:29:57,988 INFO L124 PetriNetUnfolderBase]: 1779/2842 cut-off events. [2024-06-28 04:29:57,988 INFO L125 PetriNetUnfolderBase]: For 62744/62744 co-relation queries the response was YES. [2024-06-28 04:29:57,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18080 conditions, 2842 events. 1779/2842 cut-off events. For 62744/62744 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15184 event pairs, 428 based on Foata normal form. 2/2843 useless extension candidates. Maximal degree in co-relation 18030. Up to 2571 conditions per place. [2024-06-28 04:29:58,006 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 143 selfloop transitions, 47 changer transitions 0/195 dead transitions. [2024-06-28 04:29:58,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 195 transitions, 2237 flow [2024-06-28 04:29:58,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:29:58,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:29:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 04:29:58,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-28 04:29:58,008 INFO L175 Difference]: Start difference. First operand has 118 places, 158 transitions, 1646 flow. Second operand 9 states and 157 transitions. [2024-06-28 04:29:58,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 195 transitions, 2237 flow [2024-06-28 04:29:58,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 195 transitions, 2001 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 04:29:58,061 INFO L231 Difference]: Finished difference. Result has 122 places, 162 transitions, 1619 flow [2024-06-28 04:29:58,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1619, PETRI_PLACES=122, PETRI_TRANSITIONS=162} [2024-06-28 04:29:58,062 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 79 predicate places. [2024-06-28 04:29:58,062 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 162 transitions, 1619 flow [2024-06-28 04:29:58,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:29:58,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:29:58,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:29:58,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 04:29:58,062 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:29:58,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:29:58,062 INFO L85 PathProgramCache]: Analyzing trace with hash 904496342, now seen corresponding path program 6 times [2024-06-28 04:29:58,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:29:58,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156588799] [2024-06-28 04:29:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:29:58,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:29:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:00,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:00,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156588799] [2024-06-28 04:30:00,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156588799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:00,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:00,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:00,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753036796] [2024-06-28 04:30:00,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:00,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:00,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:00,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:00,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:00,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:00,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 162 transitions, 1619 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:00,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:00,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:00,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:01,992 INFO L124 PetriNetUnfolderBase]: 1774/2834 cut-off events. [2024-06-28 04:30:01,992 INFO L125 PetriNetUnfolderBase]: For 61203/61203 co-relation queries the response was YES. [2024-06-28 04:30:02,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17709 conditions, 2834 events. 1774/2834 cut-off events. For 61203/61203 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15161 event pairs, 428 based on Foata normal form. 2/2835 useless extension candidates. Maximal degree in co-relation 17657. Up to 2457 conditions per place. [2024-06-28 04:30:02,012 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 126 selfloop transitions, 72 changer transitions 0/203 dead transitions. [2024-06-28 04:30:02,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 203 transitions, 2237 flow [2024-06-28 04:30:02,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:30:02,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:30:02,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 04:30:02,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:30:02,013 INFO L175 Difference]: Start difference. First operand has 122 places, 162 transitions, 1619 flow. Second operand 10 states and 175 transitions. [2024-06-28 04:30:02,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 203 transitions, 2237 flow [2024-06-28 04:30:02,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 203 transitions, 2067 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:02,060 INFO L231 Difference]: Finished difference. Result has 126 places, 165 transitions, 1699 flow [2024-06-28 04:30:02,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1699, PETRI_PLACES=126, PETRI_TRANSITIONS=165} [2024-06-28 04:30:02,060 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 83 predicate places. [2024-06-28 04:30:02,060 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 165 transitions, 1699 flow [2024-06-28 04:30:02,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:02,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:02,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:02,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 04:30:02,061 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:02,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:02,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2033224761, now seen corresponding path program 1 times [2024-06-28 04:30:02,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:02,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391418705] [2024-06-28 04:30:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:02,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:03,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:03,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391418705] [2024-06-28 04:30:03,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391418705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:03,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:03,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:03,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988426860] [2024-06-28 04:30:03,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:03,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:03,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:03,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:03,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:03,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:03,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 165 transitions, 1699 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:03,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:03,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:03,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:04,918 INFO L124 PetriNetUnfolderBase]: 1816/2906 cut-off events. [2024-06-28 04:30:04,918 INFO L125 PetriNetUnfolderBase]: For 68143/68143 co-relation queries the response was YES. [2024-06-28 04:30:04,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18470 conditions, 2906 events. 1816/2906 cut-off events. For 68143/68143 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15744 event pairs, 356 based on Foata normal form. 4/2910 useless extension candidates. Maximal degree in co-relation 18417. Up to 2648 conditions per place. [2024-06-28 04:30:04,936 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 172 selfloop transitions, 34 changer transitions 0/211 dead transitions. [2024-06-28 04:30:04,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 211 transitions, 2309 flow [2024-06-28 04:30:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:04,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 04:30:04,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 04:30:04,938 INFO L175 Difference]: Start difference. First operand has 126 places, 165 transitions, 1699 flow. Second operand 9 states and 165 transitions. [2024-06-28 04:30:04,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 211 transitions, 2309 flow [2024-06-28 04:30:04,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 211 transitions, 2085 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 04:30:04,988 INFO L231 Difference]: Finished difference. Result has 128 places, 169 transitions, 1630 flow [2024-06-28 04:30:04,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1630, PETRI_PLACES=128, PETRI_TRANSITIONS=169} [2024-06-28 04:30:04,989 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2024-06-28 04:30:04,989 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 169 transitions, 1630 flow [2024-06-28 04:30:04,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:04,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:04,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:04,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 04:30:04,990 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:04,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:04,990 INFO L85 PathProgramCache]: Analyzing trace with hash 391579831, now seen corresponding path program 2 times [2024-06-28 04:30:04,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:04,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692631013] [2024-06-28 04:30:04,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:04,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:06,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:06,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:06,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692631013] [2024-06-28 04:30:06,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692631013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:06,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:06,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:06,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305201350] [2024-06-28 04:30:06,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:06,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:06,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:06,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:06,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:06,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:06,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 169 transitions, 1630 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:06,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:06,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:06,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:07,965 INFO L124 PetriNetUnfolderBase]: 1836/2938 cut-off events. [2024-06-28 04:30:07,965 INFO L125 PetriNetUnfolderBase]: For 65769/65769 co-relation queries the response was YES. [2024-06-28 04:30:07,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18337 conditions, 2938 events. 1836/2938 cut-off events. For 65769/65769 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15906 event pairs, 375 based on Foata normal form. 4/2942 useless extension candidates. Maximal degree in co-relation 18282. Up to 2698 conditions per place. [2024-06-28 04:30:07,987 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 168 selfloop transitions, 37 changer transitions 0/210 dead transitions. [2024-06-28 04:30:07,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 210 transitions, 2224 flow [2024-06-28 04:30:07,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:07,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 04:30:07,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-28 04:30:07,988 INFO L175 Difference]: Start difference. First operand has 128 places, 169 transitions, 1630 flow. Second operand 9 states and 163 transitions. [2024-06-28 04:30:07,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 210 transitions, 2224 flow [2024-06-28 04:30:08,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 210 transitions, 2109 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:08,049 INFO L231 Difference]: Finished difference. Result has 131 places, 171 transitions, 1663 flow [2024-06-28 04:30:08,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1663, PETRI_PLACES=131, PETRI_TRANSITIONS=171} [2024-06-28 04:30:08,050 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 88 predicate places. [2024-06-28 04:30:08,050 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 171 transitions, 1663 flow [2024-06-28 04:30:08,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:08,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:08,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:08,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 04:30:08,051 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:08,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:08,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2015761807, now seen corresponding path program 1 times [2024-06-28 04:30:08,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:08,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513028244] [2024-06-28 04:30:08,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:08,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:10,309 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 04:30:10,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:10,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513028244] [2024-06-28 04:30:10,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513028244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:10,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:10,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:10,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461960392] [2024-06-28 04:30:10,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:10,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:10,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:10,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:10,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:10,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:10,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 171 transitions, 1663 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:10,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:10,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:10,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:11,551 INFO L124 PetriNetUnfolderBase]: 1904/3072 cut-off events. [2024-06-28 04:30:11,551 INFO L125 PetriNetUnfolderBase]: For 78603/78603 co-relation queries the response was YES. [2024-06-28 04:30:11,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19427 conditions, 3072 events. 1904/3072 cut-off events. For 78603/78603 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 16991 event pairs, 423 based on Foata normal form. 16/3088 useless extension candidates. Maximal degree in co-relation 19371. Up to 2728 conditions per place. [2024-06-28 04:30:11,570 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 178 selfloop transitions, 36 changer transitions 0/219 dead transitions. [2024-06-28 04:30:11,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 219 transitions, 2325 flow [2024-06-28 04:30:11,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:30:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:30:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 04:30:11,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261904761904762 [2024-06-28 04:30:11,572 INFO L175 Difference]: Start difference. First operand has 131 places, 171 transitions, 1663 flow. Second operand 10 states and 179 transitions. [2024-06-28 04:30:11,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 219 transitions, 2325 flow [2024-06-28 04:30:11,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 219 transitions, 2197 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:11,626 INFO L231 Difference]: Finished difference. Result has 134 places, 172 transitions, 1666 flow [2024-06-28 04:30:11,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1666, PETRI_PLACES=134, PETRI_TRANSITIONS=172} [2024-06-28 04:30:11,626 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 91 predicate places. [2024-06-28 04:30:11,627 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 172 transitions, 1666 flow [2024-06-28 04:30:11,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:11,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:11,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:11,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 04:30:11,627 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:11,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:11,628 INFO L85 PathProgramCache]: Analyzing trace with hash -212993371, now seen corresponding path program 2 times [2024-06-28 04:30:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:11,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680662864] [2024-06-28 04:30:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:11,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:13,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:13,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680662864] [2024-06-28 04:30:13,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680662864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:13,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:13,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:13,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50718197] [2024-06-28 04:30:13,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:13,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:13,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:13,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:13,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:13,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:13,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 172 transitions, 1666 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:13,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:13,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:13,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:15,138 INFO L124 PetriNetUnfolderBase]: 2048/3316 cut-off events. [2024-06-28 04:30:15,139 INFO L125 PetriNetUnfolderBase]: For 92554/92554 co-relation queries the response was YES. [2024-06-28 04:30:15,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21730 conditions, 3316 events. 2048/3316 cut-off events. For 92554/92554 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 18823 event pairs, 461 based on Foata normal form. 12/3328 useless extension candidates. Maximal degree in co-relation 21673. Up to 2669 conditions per place. [2024-06-28 04:30:15,162 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 181 selfloop transitions, 40 changer transitions 0/226 dead transitions. [2024-06-28 04:30:15,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 226 transitions, 2546 flow [2024-06-28 04:30:15,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:30:15,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:30:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 04:30:15,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-06-28 04:30:15,164 INFO L175 Difference]: Start difference. First operand has 134 places, 172 transitions, 1666 flow. Second operand 10 states and 184 transitions. [2024-06-28 04:30:15,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 226 transitions, 2546 flow [2024-06-28 04:30:15,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 226 transitions, 2461 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 04:30:15,235 INFO L231 Difference]: Finished difference. Result has 136 places, 174 transitions, 1769 flow [2024-06-28 04:30:15,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1769, PETRI_PLACES=136, PETRI_TRANSITIONS=174} [2024-06-28 04:30:15,235 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-06-28 04:30:15,235 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 174 transitions, 1769 flow [2024-06-28 04:30:15,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:15,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:15,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:15,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 04:30:15,236 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:15,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:15,236 INFO L85 PathProgramCache]: Analyzing trace with hash 678944185, now seen corresponding path program 3 times [2024-06-28 04:30:15,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:15,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102183075] [2024-06-28 04:30:15,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:15,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:17,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:17,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:17,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102183075] [2024-06-28 04:30:17,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102183075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:17,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:17,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:17,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841151741] [2024-06-28 04:30:17,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:17,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:17,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:17,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:17,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:17,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:17,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 174 transitions, 1769 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:17,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:17,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:17,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:18,769 INFO L124 PetriNetUnfolderBase]: 2020/3262 cut-off events. [2024-06-28 04:30:18,769 INFO L125 PetriNetUnfolderBase]: For 91877/91877 co-relation queries the response was YES. [2024-06-28 04:30:18,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21077 conditions, 3262 events. 2020/3262 cut-off events. For 91877/91877 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 18381 event pairs, 421 based on Foata normal form. 16/3278 useless extension candidates. Maximal degree in co-relation 21019. Up to 2811 conditions per place. [2024-06-28 04:30:18,791 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 151 selfloop transitions, 65 changer transitions 0/221 dead transitions. [2024-06-28 04:30:18,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 221 transitions, 2397 flow [2024-06-28 04:30:18,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:30:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:30:18,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 04:30:18,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430952380952381 [2024-06-28 04:30:18,792 INFO L175 Difference]: Start difference. First operand has 136 places, 174 transitions, 1769 flow. Second operand 10 states and 181 transitions. [2024-06-28 04:30:18,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 221 transitions, 2397 flow [2024-06-28 04:30:18,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 221 transitions, 2314 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:18,864 INFO L231 Difference]: Finished difference. Result has 141 places, 175 transitions, 1856 flow [2024-06-28 04:30:18,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1856, PETRI_PLACES=141, PETRI_TRANSITIONS=175} [2024-06-28 04:30:18,865 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-06-28 04:30:18,865 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 175 transitions, 1856 flow [2024-06-28 04:30:18,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:18,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:18,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:18,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 04:30:18,865 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:18,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:18,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1115370313, now seen corresponding path program 3 times [2024-06-28 04:30:18,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:18,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891751439] [2024-06-28 04:30:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:18,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:20,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:20,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891751439] [2024-06-28 04:30:20,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891751439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:20,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:20,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:20,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470911806] [2024-06-28 04:30:20,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:20,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:20,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:20,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:20,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:20,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:20,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 175 transitions, 1856 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:20,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:20,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:20,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:21,691 INFO L124 PetriNetUnfolderBase]: 2138/3469 cut-off events. [2024-06-28 04:30:21,691 INFO L125 PetriNetUnfolderBase]: For 97785/97785 co-relation queries the response was YES. [2024-06-28 04:30:21,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22449 conditions, 3469 events. 2138/3469 cut-off events. For 97785/97785 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 19972 event pairs, 445 based on Foata normal form. 16/3485 useless extension candidates. Maximal degree in co-relation 22388. Up to 3074 conditions per place. [2024-06-28 04:30:21,713 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 187 selfloop transitions, 37 changer transitions 0/229 dead transitions. [2024-06-28 04:30:21,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 229 transitions, 2568 flow [2024-06-28 04:30:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:21,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 04:30:21,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-28 04:30:21,715 INFO L175 Difference]: Start difference. First operand has 141 places, 175 transitions, 1856 flow. Second operand 9 states and 167 transitions. [2024-06-28 04:30:21,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 229 transitions, 2568 flow [2024-06-28 04:30:21,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 229 transitions, 2467 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:21,798 INFO L231 Difference]: Finished difference. Result has 144 places, 181 transitions, 1937 flow [2024-06-28 04:30:21,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1937, PETRI_PLACES=144, PETRI_TRANSITIONS=181} [2024-06-28 04:30:21,799 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 101 predicate places. [2024-06-28 04:30:21,799 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 181 transitions, 1937 flow [2024-06-28 04:30:21,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:21,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:21,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:21,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 04:30:21,799 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:21,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:21,800 INFO L85 PathProgramCache]: Analyzing trace with hash -854225383, now seen corresponding path program 4 times [2024-06-28 04:30:21,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:21,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518653175] [2024-06-28 04:30:21,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:21,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:23,522 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 04:30:23,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:23,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518653175] [2024-06-28 04:30:23,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518653175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:23,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:23,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:23,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108052837] [2024-06-28 04:30:23,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:23,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:23,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:23,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:23,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:23,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:23,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 181 transitions, 1937 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:23,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:23,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:23,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:24,681 INFO L124 PetriNetUnfolderBase]: 2172/3529 cut-off events. [2024-06-28 04:30:24,681 INFO L125 PetriNetUnfolderBase]: For 99758/99758 co-relation queries the response was YES. [2024-06-28 04:30:24,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22914 conditions, 3529 events. 2172/3529 cut-off events. For 99758/99758 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 20458 event pairs, 519 based on Foata normal form. 4/3533 useless extension candidates. Maximal degree in co-relation 22851. Up to 3256 conditions per place. [2024-06-28 04:30:24,705 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 181 selfloop transitions, 41 changer transitions 0/227 dead transitions. [2024-06-28 04:30:24,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 227 transitions, 2606 flow [2024-06-28 04:30:24,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 04:30:24,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-28 04:30:24,707 INFO L175 Difference]: Start difference. First operand has 144 places, 181 transitions, 1937 flow. Second operand 9 states and 163 transitions. [2024-06-28 04:30:24,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 227 transitions, 2606 flow [2024-06-28 04:30:24,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 227 transitions, 2524 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:24,807 INFO L231 Difference]: Finished difference. Result has 148 places, 186 transitions, 2058 flow [2024-06-28 04:30:24,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2058, PETRI_PLACES=148, PETRI_TRANSITIONS=186} [2024-06-28 04:30:24,807 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 105 predicate places. [2024-06-28 04:30:24,807 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 186 transitions, 2058 flow [2024-06-28 04:30:24,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:24,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:24,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:24,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 04:30:24,807 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:24,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:24,808 INFO L85 PathProgramCache]: Analyzing trace with hash -638479613, now seen corresponding path program 5 times [2024-06-28 04:30:24,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:24,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909272136] [2024-06-28 04:30:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:24,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:26,415 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 04:30:26,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:26,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909272136] [2024-06-28 04:30:26,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909272136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:26,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:26,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:26,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263291204] [2024-06-28 04:30:26,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:26,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:26,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:26,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:26,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:26,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:26,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 186 transitions, 2058 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:26,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:26,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:26,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:27,579 INFO L124 PetriNetUnfolderBase]: 2270/3689 cut-off events. [2024-06-28 04:30:27,579 INFO L125 PetriNetUnfolderBase]: For 105834/105834 co-relation queries the response was YES. [2024-06-28 04:30:27,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24059 conditions, 3689 events. 2270/3689 cut-off events. For 105834/105834 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 21393 event pairs, 360 based on Foata normal form. 4/3693 useless extension candidates. Maximal degree in co-relation 23994. Up to 3250 conditions per place. [2024-06-28 04:30:27,604 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 187 selfloop transitions, 49 changer transitions 0/241 dead transitions. [2024-06-28 04:30:27,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 241 transitions, 2848 flow [2024-06-28 04:30:27,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:27,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 04:30:27,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-28 04:30:27,605 INFO L175 Difference]: Start difference. First operand has 148 places, 186 transitions, 2058 flow. Second operand 9 states and 163 transitions. [2024-06-28 04:30:27,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 241 transitions, 2848 flow [2024-06-28 04:30:27,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 241 transitions, 2692 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:27,708 INFO L231 Difference]: Finished difference. Result has 151 places, 198 transitions, 2220 flow [2024-06-28 04:30:27,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1902, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2220, PETRI_PLACES=151, PETRI_TRANSITIONS=198} [2024-06-28 04:30:27,709 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 108 predicate places. [2024-06-28 04:30:27,709 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 198 transitions, 2220 flow [2024-06-28 04:30:27,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:27,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:27,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:27,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 04:30:27,709 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:27,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:27,709 INFO L85 PathProgramCache]: Analyzing trace with hash -854220423, now seen corresponding path program 4 times [2024-06-28 04:30:27,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:27,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202945694] [2024-06-28 04:30:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:27,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:29,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:29,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:29,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202945694] [2024-06-28 04:30:29,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202945694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:29,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:29,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:29,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70980856] [2024-06-28 04:30:29,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:29,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:29,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:29,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:29,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:29,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:29,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 198 transitions, 2220 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:29,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:29,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:29,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:31,215 INFO L124 PetriNetUnfolderBase]: 2386/3891 cut-off events. [2024-06-28 04:30:31,215 INFO L125 PetriNetUnfolderBase]: For 123372/123372 co-relation queries the response was YES. [2024-06-28 04:30:31,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26093 conditions, 3891 events. 2386/3891 cut-off events. For 123372/123372 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 23161 event pairs, 562 based on Foata normal form. 16/3907 useless extension candidates. Maximal degree in co-relation 26026. Up to 3444 conditions per place. [2024-06-28 04:30:31,242 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 199 selfloop transitions, 45 changer transitions 0/249 dead transitions. [2024-06-28 04:30:31,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 249 transitions, 3006 flow [2024-06-28 04:30:31,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:30:31,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:30:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 04:30:31,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430952380952381 [2024-06-28 04:30:31,244 INFO L175 Difference]: Start difference. First operand has 151 places, 198 transitions, 2220 flow. Second operand 10 states and 181 transitions. [2024-06-28 04:30:31,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 249 transitions, 3006 flow [2024-06-28 04:30:31,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 249 transitions, 2810 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:31,371 INFO L231 Difference]: Finished difference. Result has 154 places, 200 transitions, 2218 flow [2024-06-28 04:30:31,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2218, PETRI_PLACES=154, PETRI_TRANSITIONS=200} [2024-06-28 04:30:31,372 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 111 predicate places. [2024-06-28 04:30:31,372 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 200 transitions, 2218 flow [2024-06-28 04:30:31,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:31,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:31,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:31,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 04:30:31,372 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:31,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:31,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1039505178, now seen corresponding path program 1 times [2024-06-28 04:30:31,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:31,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826236618] [2024-06-28 04:30:31,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:31,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:32,926 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 04:30:32,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:32,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826236618] [2024-06-28 04:30:32,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826236618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:32,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:32,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:30:32,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577282345] [2024-06-28 04:30:32,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:32,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:30:32,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:32,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:30:32,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:30:32,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:32,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 200 transitions, 2218 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:32,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:32,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:32,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:34,088 INFO L124 PetriNetUnfolderBase]: 2396/3892 cut-off events. [2024-06-28 04:30:34,088 INFO L125 PetriNetUnfolderBase]: For 120589/120589 co-relation queries the response was YES. [2024-06-28 04:30:34,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26003 conditions, 3892 events. 2396/3892 cut-off events. For 120589/120589 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 23083 event pairs, 520 based on Foata normal form. 2/3894 useless extension candidates. Maximal degree in co-relation 25936. Up to 3648 conditions per place. [2024-06-28 04:30:34,117 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 196 selfloop transitions, 34 changer transitions 0/235 dead transitions. [2024-06-28 04:30:34,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 235 transitions, 2926 flow [2024-06-28 04:30:34,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:30:34,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:30:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 04:30:34,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-06-28 04:30:34,118 INFO L175 Difference]: Start difference. First operand has 154 places, 200 transitions, 2218 flow. Second operand 7 states and 128 transitions. [2024-06-28 04:30:34,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 235 transitions, 2926 flow [2024-06-28 04:30:34,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 235 transitions, 2790 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 04:30:34,235 INFO L231 Difference]: Finished difference. Result has 153 places, 209 transitions, 2263 flow [2024-06-28 04:30:34,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2263, PETRI_PLACES=153, PETRI_TRANSITIONS=209} [2024-06-28 04:30:34,236 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 110 predicate places. [2024-06-28 04:30:34,236 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 209 transitions, 2263 flow [2024-06-28 04:30:34,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:34,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:34,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:34,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 04:30:34,236 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:34,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:34,236 INFO L85 PathProgramCache]: Analyzing trace with hash 542038555, now seen corresponding path program 6 times [2024-06-28 04:30:34,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:34,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394249034] [2024-06-28 04:30:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:34,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:36,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:36,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:36,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394249034] [2024-06-28 04:30:36,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394249034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:36,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:36,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:36,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922575555] [2024-06-28 04:30:36,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:36,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:36,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:36,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:36,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:36,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:36,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 209 transitions, 2263 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:36,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:36,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:36,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:37,474 INFO L124 PetriNetUnfolderBase]: 2416/3929 cut-off events. [2024-06-28 04:30:37,474 INFO L125 PetriNetUnfolderBase]: For 125699/125699 co-relation queries the response was YES. [2024-06-28 04:30:37,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26500 conditions, 3929 events. 2416/3929 cut-off events. For 125699/125699 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 23179 event pairs, 442 based on Foata normal form. 4/3933 useless extension candidates. Maximal degree in co-relation 26431. Up to 3390 conditions per place. [2024-06-28 04:30:37,504 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 190 selfloop transitions, 53 changer transitions 0/248 dead transitions. [2024-06-28 04:30:37,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 248 transitions, 2997 flow [2024-06-28 04:30:37,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:30:37,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-28 04:30:37,506 INFO L175 Difference]: Start difference. First operand has 153 places, 209 transitions, 2263 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:30:37,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 248 transitions, 2997 flow [2024-06-28 04:30:37,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 248 transitions, 2948 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 04:30:37,631 INFO L231 Difference]: Finished difference. Result has 159 places, 212 transitions, 2468 flow [2024-06-28 04:30:37,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2214, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2468, PETRI_PLACES=159, PETRI_TRANSITIONS=212} [2024-06-28 04:30:37,631 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 116 predicate places. [2024-06-28 04:30:37,632 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 212 transitions, 2468 flow [2024-06-28 04:30:37,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:37,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:37,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:37,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 04:30:37,632 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:37,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:37,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1465453533, now seen corresponding path program 7 times [2024-06-28 04:30:37,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:37,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254970425] [2024-06-28 04:30:37,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:37,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:39,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:39,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254970425] [2024-06-28 04:30:39,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254970425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:39,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:39,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:30:39,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486534634] [2024-06-28 04:30:39,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:39,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:30:39,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:39,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:30:39,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:30:39,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:39,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 212 transitions, 2468 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:39,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:39,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:39,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:41,101 INFO L124 PetriNetUnfolderBase]: 2408/3923 cut-off events. [2024-06-28 04:30:41,101 INFO L125 PetriNetUnfolderBase]: For 130769/130769 co-relation queries the response was YES. [2024-06-28 04:30:41,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26944 conditions, 3923 events. 2408/3923 cut-off events. For 130769/130769 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 23376 event pairs, 614 based on Foata normal form. 4/3927 useless extension candidates. Maximal degree in co-relation 26872. Up to 3578 conditions per place. [2024-06-28 04:30:41,133 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 196 selfloop transitions, 48 changer transitions 0/249 dead transitions. [2024-06-28 04:30:41,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 249 transitions, 3168 flow [2024-06-28 04:30:41,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:30:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:30:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:30:41,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-28 04:30:41,135 INFO L175 Difference]: Start difference. First operand has 159 places, 212 transitions, 2468 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:30:41,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 249 transitions, 3168 flow [2024-06-28 04:30:41,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 249 transitions, 2954 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:41,335 INFO L231 Difference]: Finished difference. Result has 161 places, 214 transitions, 2456 flow [2024-06-28 04:30:41,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2456, PETRI_PLACES=161, PETRI_TRANSITIONS=214} [2024-06-28 04:30:41,336 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 118 predicate places. [2024-06-28 04:30:41,336 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 214 transitions, 2456 flow [2024-06-28 04:30:41,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:41,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:41,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:41,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 04:30:41,337 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:41,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:41,337 INFO L85 PathProgramCache]: Analyzing trace with hash -717418367, now seen corresponding path program 5 times [2024-06-28 04:30:41,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:41,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085419620] [2024-06-28 04:30:41,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:41,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:43,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:43,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085419620] [2024-06-28 04:30:43,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085419620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:43,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:43,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:43,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207521623] [2024-06-28 04:30:43,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:43,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:43,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:43,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:43,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:43,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:43,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 214 transitions, 2456 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:43,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:43,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:43,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:45,289 INFO L124 PetriNetUnfolderBase]: 2476/4053 cut-off events. [2024-06-28 04:30:45,289 INFO L125 PetriNetUnfolderBase]: For 133905/133905 co-relation queries the response was YES. [2024-06-28 04:30:45,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27314 conditions, 4053 events. 2476/4053 cut-off events. For 133905/133905 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24352 event pairs, 574 based on Foata normal form. 16/4069 useless extension candidates. Maximal degree in co-relation 27241. Up to 3326 conditions per place. [2024-06-28 04:30:45,323 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 197 selfloop transitions, 56 changer transitions 0/258 dead transitions. [2024-06-28 04:30:45,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 258 transitions, 3216 flow [2024-06-28 04:30:45,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:45,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 04:30:45,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-28 04:30:45,325 INFO L175 Difference]: Start difference. First operand has 161 places, 214 transitions, 2456 flow. Second operand 9 states and 163 transitions. [2024-06-28 04:30:45,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 258 transitions, 3216 flow [2024-06-28 04:30:45,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 258 transitions, 3042 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:45,509 INFO L231 Difference]: Finished difference. Result has 164 places, 215 transitions, 2472 flow [2024-06-28 04:30:45,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2472, PETRI_PLACES=164, PETRI_TRANSITIONS=215} [2024-06-28 04:30:45,509 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 121 predicate places. [2024-06-28 04:30:45,509 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 215 transitions, 2472 flow [2024-06-28 04:30:45,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:45,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:45,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:45,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 04:30:45,510 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:45,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash -429821823, now seen corresponding path program 6 times [2024-06-28 04:30:45,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:45,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164915647] [2024-06-28 04:30:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:45,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:47,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:47,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:47,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164915647] [2024-06-28 04:30:47,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164915647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:47,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:47,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:47,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039891213] [2024-06-28 04:30:47,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:47,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:47,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:47,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:47,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:47,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:47,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 215 transitions, 2472 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:47,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:47,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:47,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:49,473 INFO L124 PetriNetUnfolderBase]: 2716/4463 cut-off events. [2024-06-28 04:30:49,474 INFO L125 PetriNetUnfolderBase]: For 149149/149149 co-relation queries the response was YES. [2024-06-28 04:30:49,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30596 conditions, 4463 events. 2716/4463 cut-off events. For 149149/149149 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 27262 event pairs, 577 based on Foata normal form. 12/4474 useless extension candidates. Maximal degree in co-relation 30522. Up to 2910 conditions per place. [2024-06-28 04:30:49,510 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 168 selfloop transitions, 91 changer transitions 0/264 dead transitions. [2024-06-28 04:30:49,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 264 transitions, 3515 flow [2024-06-28 04:30:49,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 04:30:49,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-06-28 04:30:49,512 INFO L175 Difference]: Start difference. First operand has 164 places, 215 transitions, 2472 flow. Second operand 9 states and 166 transitions. [2024-06-28 04:30:49,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 264 transitions, 3515 flow [2024-06-28 04:30:49,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 264 transitions, 3347 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 04:30:49,696 INFO L231 Difference]: Finished difference. Result has 167 places, 219 transitions, 2719 flow [2024-06-28 04:30:49,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2328, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2719, PETRI_PLACES=167, PETRI_TRANSITIONS=219} [2024-06-28 04:30:49,696 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 124 predicate places. [2024-06-28 04:30:49,696 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 219 transitions, 2719 flow [2024-06-28 04:30:49,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:49,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:49,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:49,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 04:30:49,697 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:49,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:49,698 INFO L85 PathProgramCache]: Analyzing trace with hash -430058973, now seen corresponding path program 7 times [2024-06-28 04:30:49,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:49,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333120572] [2024-06-28 04:30:49,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:49,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:30:52,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:52,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333120572] [2024-06-28 04:30:52,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333120572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:52,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:52,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:52,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193388309] [2024-06-28 04:30:52,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:52,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:52,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:52,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:52,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:52,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:52,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 219 transitions, 2719 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:52,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:52,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:52,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:54,071 INFO L124 PetriNetUnfolderBase]: 2688/4430 cut-off events. [2024-06-28 04:30:54,072 INFO L125 PetriNetUnfolderBase]: For 130708/130708 co-relation queries the response was YES. [2024-06-28 04:30:54,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29488 conditions, 4430 events. 2688/4430 cut-off events. For 130708/130708 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 27423 event pairs, 737 based on Foata normal form. 16/4446 useless extension candidates. Maximal degree in co-relation 29412. Up to 3826 conditions per place. [2024-06-28 04:30:54,104 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 206 selfloop transitions, 56 changer transitions 0/267 dead transitions. [2024-06-28 04:30:54,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 267 transitions, 3530 flow [2024-06-28 04:30:54,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:30:54,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:30:54,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 04:30:54,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-06-28 04:30:54,105 INFO L175 Difference]: Start difference. First operand has 167 places, 219 transitions, 2719 flow. Second operand 10 states and 177 transitions. [2024-06-28 04:30:54,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 267 transitions, 3530 flow [2024-06-28 04:30:54,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 267 transitions, 3377 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 04:30:54,280 INFO L231 Difference]: Finished difference. Result has 171 places, 222 transitions, 2781 flow [2024-06-28 04:30:54,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2566, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2781, PETRI_PLACES=171, PETRI_TRANSITIONS=222} [2024-06-28 04:30:54,280 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2024-06-28 04:30:54,280 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 222 transitions, 2781 flow [2024-06-28 04:30:54,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:54,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:54,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:54,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 04:30:54,281 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:54,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:54,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1386726513, now seen corresponding path program 8 times [2024-06-28 04:30:54,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:54,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388319169] [2024-06-28 04:30:54,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:54,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:30:56,566 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 04:30:56,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:30:56,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388319169] [2024-06-28 04:30:56,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388319169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:30:56,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:30:56,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:30:56,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224314749] [2024-06-28 04:30:56,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:30:56,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:30:56,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:30:56,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:30:56,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:30:56,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:30:56,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 222 transitions, 2781 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:56,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:30:56,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:30:56,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:30:58,049 INFO L124 PetriNetUnfolderBase]: 2880/4750 cut-off events. [2024-06-28 04:30:58,049 INFO L125 PetriNetUnfolderBase]: For 141569/141569 co-relation queries the response was YES. [2024-06-28 04:30:58,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32456 conditions, 4750 events. 2880/4750 cut-off events. For 141569/141569 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 29810 event pairs, 661 based on Foata normal form. 12/4759 useless extension candidates. Maximal degree in co-relation 32379. Up to 3980 conditions per place. [2024-06-28 04:30:58,087 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 193 selfloop transitions, 69 changer transitions 0/267 dead transitions. [2024-06-28 04:30:58,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 267 transitions, 3777 flow [2024-06-28 04:30:58,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:30:58,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:30:58,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 04:30:58,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 04:30:58,088 INFO L175 Difference]: Start difference. First operand has 171 places, 222 transitions, 2781 flow. Second operand 9 states and 165 transitions. [2024-06-28 04:30:58,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 267 transitions, 3777 flow [2024-06-28 04:30:58,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 267 transitions, 3632 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 04:30:58,266 INFO L231 Difference]: Finished difference. Result has 171 places, 225 transitions, 2938 flow [2024-06-28 04:30:58,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2640, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2938, PETRI_PLACES=171, PETRI_TRANSITIONS=225} [2024-06-28 04:30:58,267 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2024-06-28 04:30:58,267 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 225 transitions, 2938 flow [2024-06-28 04:30:58,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:30:58,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:30:58,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:30:58,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 04:30:58,267 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:30:58,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:30:58,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1386963663, now seen corresponding path program 9 times [2024-06-28 04:30:58,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:30:58,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313726085] [2024-06-28 04:30:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:30:58,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:30:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:00,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:00,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313726085] [2024-06-28 04:31:00,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313726085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:00,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:00,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:00,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138224259] [2024-06-28 04:31:00,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:00,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:00,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:00,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:00,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:00,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:31:00,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 225 transitions, 2938 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:00,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:00,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:31:00,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:02,255 INFO L124 PetriNetUnfolderBase]: 2852/4708 cut-off events. [2024-06-28 04:31:02,255 INFO L125 PetriNetUnfolderBase]: For 138572/138572 co-relation queries the response was YES. [2024-06-28 04:31:02,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31603 conditions, 4708 events. 2852/4708 cut-off events. For 138572/138572 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 29606 event pairs, 663 based on Foata normal form. 16/4721 useless extension candidates. Maximal degree in co-relation 31527. Up to 4190 conditions per place. [2024-06-28 04:31:02,288 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 190 selfloop transitions, 67 changer transitions 0/262 dead transitions. [2024-06-28 04:31:02,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 262 transitions, 3630 flow [2024-06-28 04:31:02,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:31:02,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:31:02,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 04:31:02,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 04:31:02,291 INFO L175 Difference]: Start difference. First operand has 171 places, 225 transitions, 2938 flow. Second operand 9 states and 161 transitions. [2024-06-28 04:31:02,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 262 transitions, 3630 flow [2024-06-28 04:31:02,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 262 transitions, 3493 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 04:31:02,460 INFO L231 Difference]: Finished difference. Result has 175 places, 225 transitions, 2942 flow [2024-06-28 04:31:02,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2942, PETRI_PLACES=175, PETRI_TRANSITIONS=225} [2024-06-28 04:31:02,460 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 132 predicate places. [2024-06-28 04:31:02,460 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 225 transitions, 2942 flow [2024-06-28 04:31:02,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:02,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:02,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:02,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 04:31:02,461 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:02,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:02,462 INFO L85 PathProgramCache]: Analyzing trace with hash -2025145295, now seen corresponding path program 10 times [2024-06-28 04:31:02,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:02,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024266921] [2024-06-28 04:31:02,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:02,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:05,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:05,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024266921] [2024-06-28 04:31:05,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024266921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:05,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:05,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:05,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399248984] [2024-06-28 04:31:05,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:05,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:05,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:05,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:05,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:05,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:31:05,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 225 transitions, 2942 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:05,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:05,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:31:05,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:06,849 INFO L124 PetriNetUnfolderBase]: 2996/4984 cut-off events. [2024-06-28 04:31:06,849 INFO L125 PetriNetUnfolderBase]: For 152545/152545 co-relation queries the response was YES. [2024-06-28 04:31:06,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34161 conditions, 4984 events. 2996/4984 cut-off events. For 152545/152545 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 31989 event pairs, 814 based on Foata normal form. 12/4995 useless extension candidates. Maximal degree in co-relation 34083. Up to 3837 conditions per place. [2024-06-28 04:31:06,891 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 192 selfloop transitions, 78 changer transitions 0/275 dead transitions. [2024-06-28 04:31:06,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 275 transitions, 3972 flow [2024-06-28 04:31:06,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:31:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:31:06,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 04:31:06,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 04:31:06,893 INFO L175 Difference]: Start difference. First operand has 175 places, 225 transitions, 2942 flow. Second operand 10 states and 183 transitions. [2024-06-28 04:31:06,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 275 transitions, 3972 flow [2024-06-28 04:31:07,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 275 transitions, 3839 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 04:31:07,047 INFO L231 Difference]: Finished difference. Result has 178 places, 227 transitions, 3091 flow [2024-06-28 04:31:07,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2809, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3091, PETRI_PLACES=178, PETRI_TRANSITIONS=227} [2024-06-28 04:31:07,047 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 135 predicate places. [2024-06-28 04:31:07,048 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 227 transitions, 3091 flow [2024-06-28 04:31:07,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:07,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:07,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:07,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 04:31:07,048 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:07,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:07,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2025382445, now seen corresponding path program 11 times [2024-06-28 04:31:07,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:07,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326370292] [2024-06-28 04:31:07,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:07,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:09,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:09,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326370292] [2024-06-28 04:31:09,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326370292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:09,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:09,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:09,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801044989] [2024-06-28 04:31:09,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:09,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:09,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:09,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:09,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:09,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:31:09,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 227 transitions, 3091 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:09,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:09,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:31:09,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:10,840 INFO L124 PetriNetUnfolderBase]: 2968/4920 cut-off events. [2024-06-28 04:31:10,840 INFO L125 PetriNetUnfolderBase]: For 153782/153782 co-relation queries the response was YES. [2024-06-28 04:31:10,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33564 conditions, 4920 events. 2968/4920 cut-off events. For 153782/153782 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 31405 event pairs, 693 based on Foata normal form. 16/4933 useless extension candidates. Maximal degree in co-relation 33485. Up to 4243 conditions per place. [2024-06-28 04:31:10,885 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 157 selfloop transitions, 102 changer transitions 0/264 dead transitions. [2024-06-28 04:31:10,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 264 transitions, 3787 flow [2024-06-28 04:31:10,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:31:10,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:31:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 04:31:10,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 04:31:10,887 INFO L175 Difference]: Start difference. First operand has 178 places, 227 transitions, 3091 flow. Second operand 9 states and 161 transitions. [2024-06-28 04:31:10,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 264 transitions, 3787 flow [2024-06-28 04:31:11,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 264 transitions, 3648 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 04:31:11,102 INFO L231 Difference]: Finished difference. Result has 180 places, 227 transitions, 3163 flow [2024-06-28 04:31:11,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2952, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3163, PETRI_PLACES=180, PETRI_TRANSITIONS=227} [2024-06-28 04:31:11,102 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-28 04:31:11,103 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 227 transitions, 3163 flow [2024-06-28 04:31:11,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:11,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:11,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:11,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 04:31:11,103 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:11,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:11,104 INFO L85 PathProgramCache]: Analyzing trace with hash 941355137, now seen corresponding path program 12 times [2024-06-28 04:31:11,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:11,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365008758] [2024-06-28 04:31:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:11,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:13,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:13,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:13,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365008758] [2024-06-28 04:31:13,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365008758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:13,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:13,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:13,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629244703] [2024-06-28 04:31:13,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:13,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:13,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:13,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:13,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:13,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:31:13,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 227 transitions, 3163 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:13,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:13,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:31:13,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:15,084 INFO L124 PetriNetUnfolderBase]: 2988/4964 cut-off events. [2024-06-28 04:31:15,084 INFO L125 PetriNetUnfolderBase]: For 147438/147438 co-relation queries the response was YES. [2024-06-28 04:31:15,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33717 conditions, 4964 events. 2988/4964 cut-off events. For 147438/147438 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 31450 event pairs, 634 based on Foata normal form. 12/4973 useless extension candidates. Maximal degree in co-relation 33637. Up to 2645 conditions per place. [2024-06-28 04:31:15,129 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 144 selfloop transitions, 120 changer transitions 0/269 dead transitions. [2024-06-28 04:31:15,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 269 transitions, 3963 flow [2024-06-28 04:31:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:31:15,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:31:15,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 04:31:15,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-06-28 04:31:15,130 INFO L175 Difference]: Start difference. First operand has 180 places, 227 transitions, 3163 flow. Second operand 9 states and 164 transitions. [2024-06-28 04:31:15,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 269 transitions, 3963 flow [2024-06-28 04:31:15,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 269 transitions, 3722 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 04:31:15,304 INFO L231 Difference]: Finished difference. Result has 180 places, 228 transitions, 3230 flow [2024-06-28 04:31:15,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3230, PETRI_PLACES=180, PETRI_TRANSITIONS=228} [2024-06-28 04:31:15,304 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-28 04:31:15,304 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 228 transitions, 3230 flow [2024-06-28 04:31:15,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:15,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:15,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:15,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 04:31:15,305 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:15,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:15,305 INFO L85 PathProgramCache]: Analyzing trace with hash 424630374, now seen corresponding path program 2 times [2024-06-28 04:31:15,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:15,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251120174] [2024-06-28 04:31:15,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:15,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:16,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:16,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251120174] [2024-06-28 04:31:16,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251120174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:16,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:16,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:31:16,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265978341] [2024-06-28 04:31:16,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:16,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:31:16,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:16,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:31:16,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:31:16,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:31:16,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 228 transitions, 3230 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:16,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:16,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:31:16,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:18,400 INFO L124 PetriNetUnfolderBase]: 2998/4985 cut-off events. [2024-06-28 04:31:18,401 INFO L125 PetriNetUnfolderBase]: For 148269/148269 co-relation queries the response was YES. [2024-06-28 04:31:18,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34076 conditions, 4985 events. 2998/4985 cut-off events. For 148269/148269 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 32132 event pairs, 691 based on Foata normal form. 2/4986 useless extension candidates. Maximal degree in co-relation 33996. Up to 4686 conditions per place. [2024-06-28 04:31:18,446 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 211 selfloop transitions, 35 changer transitions 0/251 dead transitions. [2024-06-28 04:31:18,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 251 transitions, 3916 flow [2024-06-28 04:31:18,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:31:18,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:31:18,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 04:31:18,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43253968253968256 [2024-06-28 04:31:18,448 INFO L175 Difference]: Start difference. First operand has 180 places, 228 transitions, 3230 flow. Second operand 6 states and 109 transitions. [2024-06-28 04:31:18,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 251 transitions, 3916 flow [2024-06-28 04:31:18,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 251 transitions, 3687 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 04:31:18,649 INFO L231 Difference]: Finished difference. Result has 180 places, 231 transitions, 3130 flow [2024-06-28 04:31:18,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3001, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3130, PETRI_PLACES=180, PETRI_TRANSITIONS=231} [2024-06-28 04:31:18,650 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-28 04:31:18,650 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 231 transitions, 3130 flow [2024-06-28 04:31:18,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:18,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:18,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:18,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 04:31:18,650 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:18,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:18,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1913402836, now seen corresponding path program 3 times [2024-06-28 04:31:18,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:18,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450761295] [2024-06-28 04:31:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:18,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:20,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:20,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:20,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450761295] [2024-06-28 04:31:20,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450761295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:20,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:20,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:31:20,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349003790] [2024-06-28 04:31:20,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:20,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:31:20,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:20,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:31:20,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:31:20,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:31:20,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 231 transitions, 3130 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:20,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:20,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:31:20,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:21,848 INFO L124 PetriNetUnfolderBase]: 2992/4970 cut-off events. [2024-06-28 04:31:21,848 INFO L125 PetriNetUnfolderBase]: For 147640/147640 co-relation queries the response was YES. [2024-06-28 04:31:21,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33494 conditions, 4970 events. 2992/4970 cut-off events. For 147640/147640 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 31938 event pairs, 703 based on Foata normal form. 2/4969 useless extension candidates. Maximal degree in co-relation 33413. Up to 4681 conditions per place. [2024-06-28 04:31:21,890 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 204 selfloop transitions, 34 changer transitions 0/243 dead transitions. [2024-06-28 04:31:21,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 243 transitions, 3662 flow [2024-06-28 04:31:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:31:21,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:31:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-28 04:31:21,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4007936507936508 [2024-06-28 04:31:21,892 INFO L175 Difference]: Start difference. First operand has 180 places, 231 transitions, 3130 flow. Second operand 6 states and 101 transitions. [2024-06-28 04:31:21,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 243 transitions, 3662 flow [2024-06-28 04:31:22,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 243 transitions, 3563 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 04:31:22,109 INFO L231 Difference]: Finished difference. Result has 182 places, 231 transitions, 3105 flow [2024-06-28 04:31:22,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3105, PETRI_PLACES=182, PETRI_TRANSITIONS=231} [2024-06-28 04:31:22,110 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 139 predicate places. [2024-06-28 04:31:22,110 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 231 transitions, 3105 flow [2024-06-28 04:31:22,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:22,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:22,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:22,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 04:31:22,110 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:22,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:22,111 INFO L85 PathProgramCache]: Analyzing trace with hash -678044922, now seen corresponding path program 1 times [2024-06-28 04:31:22,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:22,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006075724] [2024-06-28 04:31:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:22,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:24,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:24,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006075724] [2024-06-28 04:31:24,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006075724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:24,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:24,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:31:24,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792576897] [2024-06-28 04:31:24,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:24,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:31:24,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:31:24,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:31:24,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:31:24,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 231 transitions, 3105 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:24,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:24,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:31:24,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:25,320 INFO L124 PetriNetUnfolderBase]: 2928/4933 cut-off events. [2024-06-28 04:31:25,320 INFO L125 PetriNetUnfolderBase]: For 142999/143001 co-relation queries the response was YES. [2024-06-28 04:31:25,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32901 conditions, 4933 events. 2928/4933 cut-off events. For 142999/143001 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 32555 event pairs, 1180 based on Foata normal form. 2/4911 useless extension candidates. Maximal degree in co-relation 32820. Up to 4661 conditions per place. [2024-06-28 04:31:25,364 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 227 selfloop transitions, 12 changer transitions 0/249 dead transitions. [2024-06-28 04:31:25,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 249 transitions, 3671 flow [2024-06-28 04:31:25,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:31:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:31:25,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 04:31:25,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 04:31:25,365 INFO L175 Difference]: Start difference. First operand has 182 places, 231 transitions, 3105 flow. Second operand 6 states and 106 transitions. [2024-06-28 04:31:25,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 249 transitions, 3671 flow [2024-06-28 04:31:25,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 249 transitions, 3596 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 04:31:25,553 INFO L231 Difference]: Finished difference. Result has 184 places, 234 transitions, 3102 flow [2024-06-28 04:31:25,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3030, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3102, PETRI_PLACES=184, PETRI_TRANSITIONS=234} [2024-06-28 04:31:25,554 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 141 predicate places. [2024-06-28 04:31:25,554 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 234 transitions, 3102 flow [2024-06-28 04:31:25,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:25,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:25,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:25,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 04:31:25,554 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:25,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:25,554 INFO L85 PathProgramCache]: Analyzing trace with hash 106474393, now seen corresponding path program 1 times [2024-06-28 04:31:25,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:25,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028131359] [2024-06-28 04:31:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:25,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:27,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:27,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028131359] [2024-06-28 04:31:27,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028131359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:27,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:27,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:31:27,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502193963] [2024-06-28 04:31:27,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:27,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:31:27,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:27,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:31:27,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:31:27,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:31:27,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 234 transitions, 3102 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:31:27,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:27,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:31:27,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:29,243 INFO L124 PetriNetUnfolderBase]: 3027/5034 cut-off events. [2024-06-28 04:31:29,243 INFO L125 PetriNetUnfolderBase]: For 152594/152594 co-relation queries the response was YES. [2024-06-28 04:31:29,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34049 conditions, 5034 events. 3027/5034 cut-off events. For 152594/152594 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 32481 event pairs, 687 based on Foata normal form. 4/5037 useless extension candidates. Maximal degree in co-relation 33967. Up to 4676 conditions per place. [2024-06-28 04:31:29,287 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 218 selfloop transitions, 42 changer transitions 0/265 dead transitions. [2024-06-28 04:31:29,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 265 transitions, 3888 flow [2024-06-28 04:31:29,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:31:29,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:31:29,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 04:31:29,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43197278911564624 [2024-06-28 04:31:29,288 INFO L175 Difference]: Start difference. First operand has 184 places, 234 transitions, 3102 flow. Second operand 7 states and 127 transitions. [2024-06-28 04:31:29,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 265 transitions, 3888 flow [2024-06-28 04:31:29,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 265 transitions, 3838 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 04:31:29,467 INFO L231 Difference]: Finished difference. Result has 187 places, 240 transitions, 3241 flow [2024-06-28 04:31:29,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3052, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3241, PETRI_PLACES=187, PETRI_TRANSITIONS=240} [2024-06-28 04:31:29,468 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2024-06-28 04:31:29,468 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 240 transitions, 3241 flow [2024-06-28 04:31:29,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:31:29,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:29,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:29,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 04:31:29,468 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:29,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:29,469 INFO L85 PathProgramCache]: Analyzing trace with hash -304951242, now seen corresponding path program 2 times [2024-06-28 04:31:29,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:29,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822631400] [2024-06-28 04:31:29,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:29,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:31,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:31,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822631400] [2024-06-28 04:31:31,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822631400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:31,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:31,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:31:31,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641037856] [2024-06-28 04:31:31,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:31,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:31:31,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:31,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:31:31,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:31:31,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:31:31,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 240 transitions, 3241 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:31,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:31,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:31:31,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:32,471 INFO L124 PetriNetUnfolderBase]: 2941/4959 cut-off events. [2024-06-28 04:31:32,471 INFO L125 PetriNetUnfolderBase]: For 151110/151110 co-relation queries the response was YES. [2024-06-28 04:31:32,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33757 conditions, 4959 events. 2941/4959 cut-off events. For 151110/151110 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 32778 event pairs, 1172 based on Foata normal form. 3/4938 useless extension candidates. Maximal degree in co-relation 33674. Up to 4684 conditions per place. [2024-06-28 04:31:32,514 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 233 selfloop transitions, 14 changer transitions 0/257 dead transitions. [2024-06-28 04:31:32,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 257 transitions, 3831 flow [2024-06-28 04:31:32,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:31:32,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:31:32,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-28 04:31:32,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:31:32,516 INFO L175 Difference]: Start difference. First operand has 187 places, 240 transitions, 3241 flow. Second operand 6 states and 102 transitions. [2024-06-28 04:31:32,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 257 transitions, 3831 flow [2024-06-28 04:31:32,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 257 transitions, 3767 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 04:31:32,730 INFO L231 Difference]: Finished difference. Result has 191 places, 246 transitions, 3292 flow [2024-06-28 04:31:32,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3292, PETRI_PLACES=191, PETRI_TRANSITIONS=246} [2024-06-28 04:31:32,731 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 148 predicate places. [2024-06-28 04:31:32,731 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 246 transitions, 3292 flow [2024-06-28 04:31:32,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:32,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:32,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:32,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 04:31:32,732 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:32,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:32,732 INFO L85 PathProgramCache]: Analyzing trace with hash 444305677, now seen corresponding path program 1 times [2024-06-28 04:31:32,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:32,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695382603] [2024-06-28 04:31:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:32,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:34,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:34,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695382603] [2024-06-28 04:31:34,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695382603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:34,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:34,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:34,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710108180] [2024-06-28 04:31:34,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:34,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:34,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:34,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:34,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:34,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:31:34,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 246 transitions, 3292 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:34,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:34,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:31:34,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:36,681 INFO L124 PetriNetUnfolderBase]: 3108/5187 cut-off events. [2024-06-28 04:31:36,681 INFO L125 PetriNetUnfolderBase]: For 175530/175530 co-relation queries the response was YES. [2024-06-28 04:31:36,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35894 conditions, 5187 events. 3108/5187 cut-off events. For 175530/175530 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 33902 event pairs, 755 based on Foata normal form. 12/5199 useless extension candidates. Maximal degree in co-relation 35808. Up to 4664 conditions per place. [2024-06-28 04:31:36,732 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 256 selfloop transitions, 37 changer transitions 0/298 dead transitions. [2024-06-28 04:31:36,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 298 transitions, 4137 flow [2024-06-28 04:31:36,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:31:36,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:31:36,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 04:31:36,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:31:36,734 INFO L175 Difference]: Start difference. First operand has 191 places, 246 transitions, 3292 flow. Second operand 10 states and 180 transitions. [2024-06-28 04:31:36,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 298 transitions, 4137 flow [2024-06-28 04:31:36,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 298 transitions, 4082 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 04:31:36,963 INFO L231 Difference]: Finished difference. Result has 198 places, 248 transitions, 3407 flow [2024-06-28 04:31:36,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3407, PETRI_PLACES=198, PETRI_TRANSITIONS=248} [2024-06-28 04:31:36,964 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 155 predicate places. [2024-06-28 04:31:36,964 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 248 transitions, 3407 flow [2024-06-28 04:31:36,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:36,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:36,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:36,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 04:31:36,964 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:36,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:36,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1695307053, now seen corresponding path program 2 times [2024-06-28 04:31:36,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:36,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889540884] [2024-06-28 04:31:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:36,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:39,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:39,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889540884] [2024-06-28 04:31:39,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889540884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:39,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:39,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:39,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82416222] [2024-06-28 04:31:39,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:39,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:39,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:39,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:39,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:39,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:31:39,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 248 transitions, 3407 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:39,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:39,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:31:39,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:41,058 INFO L124 PetriNetUnfolderBase]: 3156/5273 cut-off events. [2024-06-28 04:31:41,059 INFO L125 PetriNetUnfolderBase]: For 183912/183912 co-relation queries the response was YES. [2024-06-28 04:31:41,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36809 conditions, 5273 events. 3156/5273 cut-off events. For 183912/183912 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 34507 event pairs, 895 based on Foata normal form. 12/5285 useless extension candidates. Maximal degree in co-relation 36722. Up to 4866 conditions per place. [2024-06-28 04:31:41,112 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 256 selfloop transitions, 35 changer transitions 0/296 dead transitions. [2024-06-28 04:31:41,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 296 transitions, 4225 flow [2024-06-28 04:31:41,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:31:41,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:31:41,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-28 04:31:41,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-28 04:31:41,114 INFO L175 Difference]: Start difference. First operand has 198 places, 248 transitions, 3407 flow. Second operand 10 states and 178 transitions. [2024-06-28 04:31:41,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 296 transitions, 4225 flow [2024-06-28 04:31:41,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 296 transitions, 4111 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 04:31:41,352 INFO L231 Difference]: Finished difference. Result has 200 places, 249 transitions, 3436 flow [2024-06-28 04:31:41,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3293, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3436, PETRI_PLACES=200, PETRI_TRANSITIONS=249} [2024-06-28 04:31:41,353 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 157 predicate places. [2024-06-28 04:31:41,353 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 249 transitions, 3436 flow [2024-06-28 04:31:41,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:41,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:41,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:41,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 04:31:41,353 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:41,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:41,353 INFO L85 PathProgramCache]: Analyzing trace with hash -711181103, now seen corresponding path program 3 times [2024-06-28 04:31:41,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:41,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421222367] [2024-06-28 04:31:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:41,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:43,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:43,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421222367] [2024-06-28 04:31:43,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421222367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:43,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:43,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:43,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049814599] [2024-06-28 04:31:43,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:43,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:43,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:43,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:43,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:43,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:31:43,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 249 transitions, 3436 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:43,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:43,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:31:43,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:45,191 INFO L124 PetriNetUnfolderBase]: 3238/5413 cut-off events. [2024-06-28 04:31:45,192 INFO L125 PetriNetUnfolderBase]: For 198370/198370 co-relation queries the response was YES. [2024-06-28 04:31:45,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37964 conditions, 5413 events. 3238/5413 cut-off events. For 198370/198370 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 35618 event pairs, 877 based on Foata normal form. 12/5425 useless extension candidates. Maximal degree in co-relation 37876. Up to 4936 conditions per place. [2024-06-28 04:31:45,240 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 252 selfloop transitions, 43 changer transitions 0/300 dead transitions. [2024-06-28 04:31:45,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 300 transitions, 4343 flow [2024-06-28 04:31:45,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:31:45,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:31:45,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 04:31:45,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:31:45,242 INFO L175 Difference]: Start difference. First operand has 200 places, 249 transitions, 3436 flow. Second operand 10 states and 180 transitions. [2024-06-28 04:31:45,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 300 transitions, 4343 flow [2024-06-28 04:31:45,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 300 transitions, 4183 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-28 04:31:45,537 INFO L231 Difference]: Finished difference. Result has 202 places, 251 transitions, 3507 flow [2024-06-28 04:31:45,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3323, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3507, PETRI_PLACES=202, PETRI_TRANSITIONS=251} [2024-06-28 04:31:45,537 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 159 predicate places. [2024-06-28 04:31:45,537 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 251 transitions, 3507 flow [2024-06-28 04:31:45,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:45,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:45,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:45,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 04:31:45,538 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:45,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:45,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1137379247, now seen corresponding path program 4 times [2024-06-28 04:31:45,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:45,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446855659] [2024-06-28 04:31:45,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:45,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:47,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:47,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446855659] [2024-06-28 04:31:47,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446855659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:47,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:47,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:47,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979865721] [2024-06-28 04:31:47,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:47,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:47,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:47,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:47,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:47,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:31:47,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 251 transitions, 3507 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:47,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:47,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:31:47,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:49,107 INFO L124 PetriNetUnfolderBase]: 3354/5609 cut-off events. [2024-06-28 04:31:49,108 INFO L125 PetriNetUnfolderBase]: For 202409/202409 co-relation queries the response was YES. [2024-06-28 04:31:49,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38980 conditions, 5609 events. 3354/5609 cut-off events. For 202409/202409 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 36831 event pairs, 713 based on Foata normal form. 12/5621 useless extension candidates. Maximal degree in co-relation 38891. Up to 4918 conditions per place. [2024-06-28 04:31:49,161 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 248 selfloop transitions, 52 changer transitions 0/305 dead transitions. [2024-06-28 04:31:49,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 305 transitions, 4409 flow [2024-06-28 04:31:49,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:31:49,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:31:49,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 04:31:49,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:31:49,162 INFO L175 Difference]: Start difference. First operand has 202 places, 251 transitions, 3507 flow. Second operand 10 states and 180 transitions. [2024-06-28 04:31:49,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 305 transitions, 4409 flow [2024-06-28 04:31:49,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 305 transitions, 4281 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 04:31:49,444 INFO L231 Difference]: Finished difference. Result has 204 places, 254 transitions, 3612 flow [2024-06-28 04:31:49,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3379, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3612, PETRI_PLACES=204, PETRI_TRANSITIONS=254} [2024-06-28 04:31:49,444 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 161 predicate places. [2024-06-28 04:31:49,444 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 254 transitions, 3612 flow [2024-06-28 04:31:49,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:49,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:49,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:49,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 04:31:49,445 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:49,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:49,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1646849275, now seen corresponding path program 5 times [2024-06-28 04:31:49,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:49,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907886335] [2024-06-28 04:31:49,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:49,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:51,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:51,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907886335] [2024-06-28 04:31:51,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907886335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:51,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:51,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:51,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084430907] [2024-06-28 04:31:51,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:51,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:51,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:51,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:51,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:51,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:31:51,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 254 transitions, 3612 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:51,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:51,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:31:51,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:53,749 INFO L124 PetriNetUnfolderBase]: 3402/5689 cut-off events. [2024-06-28 04:31:53,749 INFO L125 PetriNetUnfolderBase]: For 210829/210829 co-relation queries the response was YES. [2024-06-28 04:31:53,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39742 conditions, 5689 events. 3402/5689 cut-off events. For 210829/210829 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 37389 event pairs, 671 based on Foata normal form. 12/5701 useless extension candidates. Maximal degree in co-relation 39652. Up to 4594 conditions per place. [2024-06-28 04:31:53,793 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 234 selfloop transitions, 60 changer transitions 0/299 dead transitions. [2024-06-28 04:31:53,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 299 transitions, 4440 flow [2024-06-28 04:31:53,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:31:53,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:31:53,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 04:31:53,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:31:53,794 INFO L175 Difference]: Start difference. First operand has 204 places, 254 transitions, 3612 flow. Second operand 9 states and 162 transitions. [2024-06-28 04:31:53,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 299 transitions, 4440 flow [2024-06-28 04:31:54,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 299 transitions, 4293 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 04:31:54,095 INFO L231 Difference]: Finished difference. Result has 205 places, 255 transitions, 3672 flow [2024-06-28 04:31:54,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3465, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3672, PETRI_PLACES=205, PETRI_TRANSITIONS=255} [2024-06-28 04:31:54,096 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 162 predicate places. [2024-06-28 04:31:54,096 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 255 transitions, 3672 flow [2024-06-28 04:31:54,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:54,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:54,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:54,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 04:31:54,096 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:54,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:54,096 INFO L85 PathProgramCache]: Analyzing trace with hash -765284663, now seen corresponding path program 6 times [2024-06-28 04:31:54,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:54,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142462889] [2024-06-28 04:31:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:54,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:31:56,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:31:56,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:31:56,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142462889] [2024-06-28 04:31:56,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142462889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:31:56,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:31:56,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:31:56,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629258509] [2024-06-28 04:31:56,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:31:56,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:31:56,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:31:56,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:31:56,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:31:56,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:31:56,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 255 transitions, 3672 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:56,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:31:56,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:31:56,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:31:58,708 INFO L124 PetriNetUnfolderBase]: 3382/5665 cut-off events. [2024-06-28 04:31:58,708 INFO L125 PetriNetUnfolderBase]: For 203397/203397 co-relation queries the response was YES. [2024-06-28 04:31:58,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39049 conditions, 5665 events. 3382/5665 cut-off events. For 203397/203397 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 37662 event pairs, 923 based on Foata normal form. 12/5677 useless extension candidates. Maximal degree in co-relation 38958. Up to 4954 conditions per place. [2024-06-28 04:31:58,758 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 240 selfloop transitions, 52 changer transitions 0/297 dead transitions. [2024-06-28 04:31:58,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 297 transitions, 4350 flow [2024-06-28 04:31:58,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:31:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:31:58,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 04:31:58,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 04:31:58,760 INFO L175 Difference]: Start difference. First operand has 205 places, 255 transitions, 3672 flow. Second operand 9 states and 161 transitions. [2024-06-28 04:31:58,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 297 transitions, 4350 flow [2024-06-28 04:31:59,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 297 transitions, 4185 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 04:31:59,123 INFO L231 Difference]: Finished difference. Result has 206 places, 254 transitions, 3547 flow [2024-06-28 04:31:59,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3433, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3547, PETRI_PLACES=206, PETRI_TRANSITIONS=254} [2024-06-28 04:31:59,124 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 163 predicate places. [2024-06-28 04:31:59,124 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 254 transitions, 3547 flow [2024-06-28 04:31:59,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:31:59,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:31:59,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:31:59,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 04:31:59,124 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:31:59,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:31:59,125 INFO L85 PathProgramCache]: Analyzing trace with hash 461153143, now seen corresponding path program 2 times [2024-06-28 04:31:59,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:31:59,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144524862] [2024-06-28 04:31:59,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:31:59,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:31:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:01,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:01,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144524862] [2024-06-28 04:32:01,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144524862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:01,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:01,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:32:01,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597342656] [2024-06-28 04:32:01,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:01,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:32:01,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:01,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:32:01,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:32:01,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:32:01,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 254 transitions, 3547 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:01,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:01,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:32:01,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:03,124 INFO L124 PetriNetUnfolderBase]: 3402/5696 cut-off events. [2024-06-28 04:32:03,125 INFO L125 PetriNetUnfolderBase]: For 191214/191214 co-relation queries the response was YES. [2024-06-28 04:32:03,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38815 conditions, 5696 events. 3402/5696 cut-off events. For 191214/191214 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 38111 event pairs, 1533 based on Foata normal form. 4/5700 useless extension candidates. Maximal degree in co-relation 38723. Up to 5460 conditions per place. [2024-06-28 04:32:03,181 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 248 selfloop transitions, 17 changer transitions 0/270 dead transitions. [2024-06-28 04:32:03,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 270 transitions, 4179 flow [2024-06-28 04:32:03,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:32:03,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:32:03,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 04:32:03,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741496598639456 [2024-06-28 04:32:03,182 INFO L175 Difference]: Start difference. First operand has 206 places, 254 transitions, 3547 flow. Second operand 7 states and 110 transitions. [2024-06-28 04:32:03,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 270 transitions, 4179 flow [2024-06-28 04:32:03,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 270 transitions, 3931 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 04:32:03,548 INFO L231 Difference]: Finished difference. Result has 204 places, 257 transitions, 3398 flow [2024-06-28 04:32:03,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3398, PETRI_PLACES=204, PETRI_TRANSITIONS=257} [2024-06-28 04:32:03,548 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 161 predicate places. [2024-06-28 04:32:03,549 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 257 transitions, 3398 flow [2024-06-28 04:32:03,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:03,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:03,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:03,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 04:32:03,549 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:03,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:03,550 INFO L85 PathProgramCache]: Analyzing trace with hash 460737433, now seen corresponding path program 3 times [2024-06-28 04:32:03,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:03,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414564591] [2024-06-28 04:32:03,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:03,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:05,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:05,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:05,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414564591] [2024-06-28 04:32:05,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414564591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:05,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:05,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:32:05,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031891121] [2024-06-28 04:32:05,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:05,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:32:05,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:05,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:32:05,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:32:05,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:32:05,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 257 transitions, 3398 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:32:05,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:05,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:32:05,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:07,346 INFO L124 PetriNetUnfolderBase]: 3390/5656 cut-off events. [2024-06-28 04:32:07,347 INFO L125 PetriNetUnfolderBase]: For 174654/174654 co-relation queries the response was YES. [2024-06-28 04:32:07,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37438 conditions, 5656 events. 3390/5656 cut-off events. For 174654/174654 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 37417 event pairs, 880 based on Foata normal form. 4/5657 useless extension candidates. Maximal degree in co-relation 37347. Up to 5303 conditions per place. [2024-06-28 04:32:07,391 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 224 selfloop transitions, 45 changer transitions 0/274 dead transitions. [2024-06-28 04:32:07,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 274 transitions, 4018 flow [2024-06-28 04:32:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:32:07,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:32:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 04:32:07,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013605442176871 [2024-06-28 04:32:07,392 INFO L175 Difference]: Start difference. First operand has 204 places, 257 transitions, 3398 flow. Second operand 7 states and 118 transitions. [2024-06-28 04:32:07,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 274 transitions, 4018 flow [2024-06-28 04:32:07,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 274 transitions, 3884 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 04:32:07,623 INFO L231 Difference]: Finished difference. Result has 204 places, 257 transitions, 3360 flow [2024-06-28 04:32:07,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3360, PETRI_PLACES=204, PETRI_TRANSITIONS=257} [2024-06-28 04:32:07,624 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 161 predicate places. [2024-06-28 04:32:07,624 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 257 transitions, 3360 flow [2024-06-28 04:32:07,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:32:07,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:07,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:07,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 04:32:07,625 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:07,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:07,625 INFO L85 PathProgramCache]: Analyzing trace with hash 313252732, now seen corresponding path program 1 times [2024-06-28 04:32:07,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:07,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203259516] [2024-06-28 04:32:07,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:07,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:09,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:09,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203259516] [2024-06-28 04:32:09,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203259516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:09,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:09,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:32:09,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705739746] [2024-06-28 04:32:09,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:09,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:32:09,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:09,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:32:09,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:32:09,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:32:09,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 257 transitions, 3360 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:09,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:09,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:32:09,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:11,248 INFO L124 PetriNetUnfolderBase]: 3344/5638 cut-off events. [2024-06-28 04:32:11,248 INFO L125 PetriNetUnfolderBase]: For 170644/170645 co-relation queries the response was YES. [2024-06-28 04:32:11,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37107 conditions, 5638 events. 3344/5638 cut-off events. For 170644/170645 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 38122 event pairs, 1466 based on Foata normal form. 3/5614 useless extension candidates. Maximal degree in co-relation 37017. Up to 5321 conditions per place. [2024-06-28 04:32:11,295 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 250 selfloop transitions, 30 changer transitions 0/290 dead transitions. [2024-06-28 04:32:11,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 290 transitions, 4308 flow [2024-06-28 04:32:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:32:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:32:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 04:32:11,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421768707482993 [2024-06-28 04:32:11,296 INFO L175 Difference]: Start difference. First operand has 204 places, 257 transitions, 3360 flow. Second operand 7 states and 130 transitions. [2024-06-28 04:32:11,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 290 transitions, 4308 flow [2024-06-28 04:32:11,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 290 transitions, 4177 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 04:32:11,568 INFO L231 Difference]: Finished difference. Result has 206 places, 266 transitions, 3454 flow [2024-06-28 04:32:11,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3229, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3454, PETRI_PLACES=206, PETRI_TRANSITIONS=266} [2024-06-28 04:32:11,568 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 163 predicate places. [2024-06-28 04:32:11,568 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 266 transitions, 3454 flow [2024-06-28 04:32:11,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:11,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:11,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:11,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 04:32:11,569 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:11,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:11,569 INFO L85 PathProgramCache]: Analyzing trace with hash 313342942, now seen corresponding path program 2 times [2024-06-28 04:32:11,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:11,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385793840] [2024-06-28 04:32:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:11,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:14,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:14,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385793840] [2024-06-28 04:32:14,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385793840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:14,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:14,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:32:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983697547] [2024-06-28 04:32:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:14,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:32:14,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:32:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:32:14,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:32:14,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 266 transitions, 3454 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:14,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:14,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:32:14,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:15,872 INFO L124 PetriNetUnfolderBase]: 3325/5617 cut-off events. [2024-06-28 04:32:15,873 INFO L125 PetriNetUnfolderBase]: For 175096/175097 co-relation queries the response was YES. [2024-06-28 04:32:15,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37384 conditions, 5617 events. 3325/5617 cut-off events. For 175096/175097 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 38009 event pairs, 1462 based on Foata normal form. 3/5596 useless extension candidates. Maximal degree in co-relation 37292. Up to 5335 conditions per place. [2024-06-28 04:32:15,927 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 261 selfloop transitions, 15 changer transitions 0/286 dead transitions. [2024-06-28 04:32:15,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 286 transitions, 4116 flow [2024-06-28 04:32:15,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:32:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:32:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 04:32:15,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:32:15,928 INFO L175 Difference]: Start difference. First operand has 206 places, 266 transitions, 3454 flow. Second operand 7 states and 119 transitions. [2024-06-28 04:32:15,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 286 transitions, 4116 flow [2024-06-28 04:32:16,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 286 transitions, 4061 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-28 04:32:16,216 INFO L231 Difference]: Finished difference. Result has 211 places, 269 transitions, 3491 flow [2024-06-28 04:32:16,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3399, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3491, PETRI_PLACES=211, PETRI_TRANSITIONS=269} [2024-06-28 04:32:16,217 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 168 predicate places. [2024-06-28 04:32:16,217 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 269 transitions, 3491 flow [2024-06-28 04:32:16,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:16,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:16,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:16,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 04:32:16,217 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:16,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:16,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1258580456, now seen corresponding path program 3 times [2024-06-28 04:32:16,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:16,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849679645] [2024-06-28 04:32:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:16,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:19,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:19,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849679645] [2024-06-28 04:32:19,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849679645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:19,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:19,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:32:19,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588595426] [2024-06-28 04:32:19,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:19,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:32:19,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:19,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:32:19,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:32:19,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:32:19,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 269 transitions, 3491 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:19,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:19,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:32:19,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:21,081 INFO L124 PetriNetUnfolderBase]: 3316/5605 cut-off events. [2024-06-28 04:32:21,081 INFO L125 PetriNetUnfolderBase]: For 179922/179923 co-relation queries the response was YES. [2024-06-28 04:32:21,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37698 conditions, 5605 events. 3316/5605 cut-off events. For 179922/179923 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 37900 event pairs, 1461 based on Foata normal form. 4/5583 useless extension candidates. Maximal degree in co-relation 37604. Up to 5321 conditions per place. [2024-06-28 04:32:21,133 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 250 selfloop transitions, 22 changer transitions 0/282 dead transitions. [2024-06-28 04:32:21,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 282 transitions, 4077 flow [2024-06-28 04:32:21,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:32:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:32:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 04:32:21,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3979591836734694 [2024-06-28 04:32:21,134 INFO L175 Difference]: Start difference. First operand has 211 places, 269 transitions, 3491 flow. Second operand 7 states and 117 transitions. [2024-06-28 04:32:21,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 282 transitions, 4077 flow [2024-06-28 04:32:21,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 282 transitions, 3945 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-28 04:32:21,414 INFO L231 Difference]: Finished difference. Result has 214 places, 269 transitions, 3421 flow [2024-06-28 04:32:21,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3359, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3421, PETRI_PLACES=214, PETRI_TRANSITIONS=269} [2024-06-28 04:32:21,414 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 171 predicate places. [2024-06-28 04:32:21,414 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 269 transitions, 3421 flow [2024-06-28 04:32:21,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:21,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:21,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:21,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 04:32:21,415 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:21,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:21,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1258364975, now seen corresponding path program 1 times [2024-06-28 04:32:21,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:21,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476001859] [2024-06-28 04:32:21,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:21,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:25,030 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 04:32:25,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:25,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476001859] [2024-06-28 04:32:25,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476001859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:25,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:25,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:32:25,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335637367] [2024-06-28 04:32:25,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:25,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:32:25,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:25,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:32:25,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:32:25,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:32:25,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 269 transitions, 3421 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:25,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:25,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:32:25,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:26,750 INFO L124 PetriNetUnfolderBase]: 3403/5698 cut-off events. [2024-06-28 04:32:26,751 INFO L125 PetriNetUnfolderBase]: For 198416/198416 co-relation queries the response was YES. [2024-06-28 04:32:26,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38561 conditions, 5698 events. 3403/5698 cut-off events. For 198416/198416 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 38084 event pairs, 1533 based on Foata normal form. 2/5699 useless extension candidates. Maximal degree in co-relation 38465. Up to 5473 conditions per place. [2024-06-28 04:32:26,801 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 262 selfloop transitions, 16 changer transitions 0/283 dead transitions. [2024-06-28 04:32:26,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 283 transitions, 4047 flow [2024-06-28 04:32:26,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:32:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:32:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-28 04:32:26,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3673469387755102 [2024-06-28 04:32:26,802 INFO L175 Difference]: Start difference. First operand has 214 places, 269 transitions, 3421 flow. Second operand 7 states and 108 transitions. [2024-06-28 04:32:26,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 283 transitions, 4047 flow [2024-06-28 04:32:27,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 283 transitions, 3985 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 04:32:27,079 INFO L231 Difference]: Finished difference. Result has 215 places, 271 transitions, 3434 flow [2024-06-28 04:32:27,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3359, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3434, PETRI_PLACES=215, PETRI_TRANSITIONS=271} [2024-06-28 04:32:27,080 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 172 predicate places. [2024-06-28 04:32:27,080 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 271 transitions, 3434 flow [2024-06-28 04:32:27,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:27,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:27,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:27,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 04:32:27,080 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:27,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:27,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1135932867, now seen corresponding path program 1 times [2024-06-28 04:32:27,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:27,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133202730] [2024-06-28 04:32:27,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:27,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:29,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:29,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:29,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133202730] [2024-06-28 04:32:29,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133202730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:29,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:29,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:32:29,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309363497] [2024-06-28 04:32:29,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:29,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:32:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:32:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:32:29,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:32:29,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 271 transitions, 3434 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:29,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:29,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:32:29,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:31,049 INFO L124 PetriNetUnfolderBase]: 3413/5705 cut-off events. [2024-06-28 04:32:31,049 INFO L125 PetriNetUnfolderBase]: For 200900/200900 co-relation queries the response was YES. [2024-06-28 04:32:31,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38815 conditions, 5705 events. 3413/5705 cut-off events. For 200900/200900 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 37895 event pairs, 1095 based on Foata normal form. 2/5707 useless extension candidates. Maximal degree in co-relation 38718. Up to 5427 conditions per place. [2024-06-28 04:32:31,097 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 266 selfloop transitions, 32 changer transitions 0/303 dead transitions. [2024-06-28 04:32:31,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 303 transitions, 4196 flow [2024-06-28 04:32:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:32:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:32:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:32:31,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 04:32:31,098 INFO L175 Difference]: Start difference. First operand has 215 places, 271 transitions, 3434 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:32:31,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 303 transitions, 4196 flow [2024-06-28 04:32:31,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 303 transitions, 4137 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 04:32:31,430 INFO L231 Difference]: Finished difference. Result has 218 places, 275 transitions, 3529 flow [2024-06-28 04:32:31,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3375, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3529, PETRI_PLACES=218, PETRI_TRANSITIONS=275} [2024-06-28 04:32:31,431 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 175 predicate places. [2024-06-28 04:32:31,431 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 275 transitions, 3529 flow [2024-06-28 04:32:31,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:32:31,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:31,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:31,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 04:32:31,432 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:31,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:31,432 INFO L85 PathProgramCache]: Analyzing trace with hash 97830313, now seen corresponding path program 2 times [2024-06-28 04:32:31,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:31,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42145942] [2024-06-28 04:32:31,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:31,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:33,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:33,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:33,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42145942] [2024-06-28 04:32:33,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42145942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:33,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:33,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:32:33,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916133369] [2024-06-28 04:32:33,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:33,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:32:33,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:33,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:32:33,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:32:33,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:32:33,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 275 transitions, 3529 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:32:33,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:33,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:32:33,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:35,033 INFO L124 PetriNetUnfolderBase]: 3423/5713 cut-off events. [2024-06-28 04:32:35,033 INFO L125 PetriNetUnfolderBase]: For 209665/209665 co-relation queries the response was YES. [2024-06-28 04:32:35,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39560 conditions, 5713 events. 3423/5713 cut-off events. For 209665/209665 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 37854 event pairs, 870 based on Foata normal form. 2/5715 useless extension candidates. Maximal degree in co-relation 39462. Up to 5400 conditions per place. [2024-06-28 04:32:35,081 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 260 selfloop transitions, 40 changer transitions 0/305 dead transitions. [2024-06-28 04:32:35,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 305 transitions, 4313 flow [2024-06-28 04:32:35,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:32:35,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:32:35,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:32:35,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 04:32:35,083 INFO L175 Difference]: Start difference. First operand has 218 places, 275 transitions, 3529 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:32:35,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 305 transitions, 4313 flow [2024-06-28 04:32:35,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 305 transitions, 4193 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 04:32:35,407 INFO L231 Difference]: Finished difference. Result has 220 places, 278 transitions, 3567 flow [2024-06-28 04:32:35,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3409, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3567, PETRI_PLACES=220, PETRI_TRANSITIONS=278} [2024-06-28 04:32:35,408 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 177 predicate places. [2024-06-28 04:32:35,408 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 278 transitions, 3567 flow [2024-06-28 04:32:35,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:32:35,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:35,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:35,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 04:32:35,408 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:35,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:35,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1545594291, now seen corresponding path program 3 times [2024-06-28 04:32:35,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:35,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984320739] [2024-06-28 04:32:35,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:35,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:38,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:38,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984320739] [2024-06-28 04:32:38,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984320739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:38,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:38,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:32:38,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753068520] [2024-06-28 04:32:38,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:38,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:32:38,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:38,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:32:38,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:32:38,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:32:38,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 278 transitions, 3567 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:32:38,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:38,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:32:38,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:39,536 INFO L124 PetriNetUnfolderBase]: 3433/5737 cut-off events. [2024-06-28 04:32:39,536 INFO L125 PetriNetUnfolderBase]: For 218830/218830 co-relation queries the response was YES. [2024-06-28 04:32:39,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40179 conditions, 5737 events. 3433/5737 cut-off events. For 218830/218830 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 38094 event pairs, 1089 based on Foata normal form. 2/5739 useless extension candidates. Maximal degree in co-relation 40080. Up to 5427 conditions per place. [2024-06-28 04:32:39,690 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 260 selfloop transitions, 39 changer transitions 0/304 dead transitions. [2024-06-28 04:32:39,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 304 transitions, 4329 flow [2024-06-28 04:32:39,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:32:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:32:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 04:32:39,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41156462585034015 [2024-06-28 04:32:39,692 INFO L175 Difference]: Start difference. First operand has 220 places, 278 transitions, 3567 flow. Second operand 7 states and 121 transitions. [2024-06-28 04:32:39,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 304 transitions, 4329 flow [2024-06-28 04:32:40,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 304 transitions, 4201 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 04:32:40,065 INFO L231 Difference]: Finished difference. Result has 221 places, 282 transitions, 3627 flow [2024-06-28 04:32:40,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3439, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3627, PETRI_PLACES=221, PETRI_TRANSITIONS=282} [2024-06-28 04:32:40,066 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 178 predicate places. [2024-06-28 04:32:40,066 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 282 transitions, 3627 flow [2024-06-28 04:32:40,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:32:40,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:40,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:40,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 04:32:40,066 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:40,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:40,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1550355891, now seen corresponding path program 4 times [2024-06-28 04:32:40,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:40,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022024785] [2024-06-28 04:32:40,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:40,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:42,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:42,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022024785] [2024-06-28 04:32:42,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022024785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:42,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:42,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:32:42,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684045749] [2024-06-28 04:32:42,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:42,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:32:42,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:42,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:32:42,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:32:42,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:32:42,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 282 transitions, 3627 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:32:42,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:42,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:32:42,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:43,808 INFO L124 PetriNetUnfolderBase]: 3443/5744 cut-off events. [2024-06-28 04:32:43,808 INFO L125 PetriNetUnfolderBase]: For 228245/228245 co-relation queries the response was YES. [2024-06-28 04:32:43,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40873 conditions, 5744 events. 3443/5744 cut-off events. For 228245/228245 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 38057 event pairs, 872 based on Foata normal form. 2/5745 useless extension candidates. Maximal degree in co-relation 40773. Up to 5420 conditions per place. [2024-06-28 04:32:43,868 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 260 selfloop transitions, 41 changer transitions 0/306 dead transitions. [2024-06-28 04:32:43,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 306 transitions, 4415 flow [2024-06-28 04:32:43,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:32:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:32:43,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 04:32:43,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-28 04:32:43,869 INFO L175 Difference]: Start difference. First operand has 221 places, 282 transitions, 3627 flow. Second operand 7 states and 120 transitions. [2024-06-28 04:32:43,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 306 transitions, 4415 flow [2024-06-28 04:32:44,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 306 transitions, 4281 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 04:32:44,205 INFO L231 Difference]: Finished difference. Result has 223 places, 285 transitions, 3669 flow [2024-06-28 04:32:44,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3493, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3669, PETRI_PLACES=223, PETRI_TRANSITIONS=285} [2024-06-28 04:32:44,205 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 180 predicate places. [2024-06-28 04:32:44,205 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 285 transitions, 3669 flow [2024-06-28 04:32:44,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:32:44,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:44,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:44,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 04:32:44,206 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:44,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:44,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1123303877, now seen corresponding path program 5 times [2024-06-28 04:32:44,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:44,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880191298] [2024-06-28 04:32:44,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:44,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:46,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:46,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880191298] [2024-06-28 04:32:46,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880191298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:46,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:46,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:32:46,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165953095] [2024-06-28 04:32:46,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:46,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:32:46,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:46,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:32:46,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:32:46,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:32:46,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 285 transitions, 3669 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:32:46,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:46,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:32:46,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:48,240 INFO L124 PetriNetUnfolderBase]: 3453/5769 cut-off events. [2024-06-28 04:32:48,241 INFO L125 PetriNetUnfolderBase]: For 238619/238619 co-relation queries the response was YES. [2024-06-28 04:32:48,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41497 conditions, 5769 events. 3453/5769 cut-off events. For 238619/238619 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 38392 event pairs, 1100 based on Foata normal form. 2/5770 useless extension candidates. Maximal degree in co-relation 41396. Up to 5432 conditions per place. [2024-06-28 04:32:48,296 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 262 selfloop transitions, 41 changer transitions 0/308 dead transitions. [2024-06-28 04:32:48,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 308 transitions, 4445 flow [2024-06-28 04:32:48,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:32:48,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:32:48,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 04:32:48,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-28 04:32:48,298 INFO L175 Difference]: Start difference. First operand has 223 places, 285 transitions, 3669 flow. Second operand 7 states and 120 transitions. [2024-06-28 04:32:48,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 308 transitions, 4445 flow [2024-06-28 04:32:48,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 308 transitions, 4305 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 04:32:48,723 INFO L231 Difference]: Finished difference. Result has 225 places, 289 transitions, 3727 flow [2024-06-28 04:32:48,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3535, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3727, PETRI_PLACES=225, PETRI_TRANSITIONS=289} [2024-06-28 04:32:48,723 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 182 predicate places. [2024-06-28 04:32:48,723 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 289 transitions, 3727 flow [2024-06-28 04:32:48,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:32:48,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:48,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:48,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 04:32:48,724 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:48,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:48,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1123689827, now seen corresponding path program 6 times [2024-06-28 04:32:48,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:48,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510871109] [2024-06-28 04:32:48,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:48,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:51,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:51,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510871109] [2024-06-28 04:32:51,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510871109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:51,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:51,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:32:51,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511186041] [2024-06-28 04:32:51,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:51,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:32:51,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:51,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:32:51,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:32:51,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:32:51,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 289 transitions, 3727 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:32:51,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:51,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:32:51,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:53,087 INFO L124 PetriNetUnfolderBase]: 3458/5777 cut-off events. [2024-06-28 04:32:53,087 INFO L125 PetriNetUnfolderBase]: For 237368/237368 co-relation queries the response was YES. [2024-06-28 04:32:53,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41597 conditions, 5777 events. 3458/5777 cut-off events. For 237368/237368 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 38479 event pairs, 1096 based on Foata normal form. 1/5777 useless extension candidates. Maximal degree in co-relation 41495. Up to 5417 conditions per place. [2024-06-28 04:32:53,144 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 251 selfloop transitions, 54 changer transitions 0/310 dead transitions. [2024-06-28 04:32:53,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 310 transitions, 4475 flow [2024-06-28 04:32:53,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:32:53,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:32:53,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 04:32:53,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945578231292517 [2024-06-28 04:32:53,145 INFO L175 Difference]: Start difference. First operand has 225 places, 289 transitions, 3727 flow. Second operand 7 states and 116 transitions. [2024-06-28 04:32:53,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 310 transitions, 4475 flow [2024-06-28 04:32:53,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 310 transitions, 4313 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 04:32:53,514 INFO L231 Difference]: Finished difference. Result has 228 places, 295 transitions, 3799 flow [2024-06-28 04:32:53,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3565, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3799, PETRI_PLACES=228, PETRI_TRANSITIONS=295} [2024-06-28 04:32:53,514 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 185 predicate places. [2024-06-28 04:32:53,514 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 295 transitions, 3799 flow [2024-06-28 04:32:53,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:32:53,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:53,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:53,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 04:32:53,515 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:53,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:53,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1404620131, now seen corresponding path program 7 times [2024-06-28 04:32:53,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:53,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736494398] [2024-06-28 04:32:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:53,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:32:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:32:55,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:32:55,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736494398] [2024-06-28 04:32:55,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736494398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:32:55,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:32:55,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:32:55,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143373785] [2024-06-28 04:32:55,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:32:55,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:32:55,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:32:55,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:32:55,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:32:55,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:32:55,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 295 transitions, 3799 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:32:55,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:32:55,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:32:55,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:32:57,631 INFO L124 PetriNetUnfolderBase]: 3476/5783 cut-off events. [2024-06-28 04:32:57,631 INFO L125 PetriNetUnfolderBase]: For 247266/247266 co-relation queries the response was YES. [2024-06-28 04:32:57,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42258 conditions, 5783 events. 3476/5783 cut-off events. For 247266/247266 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 38256 event pairs, 877 based on Foata normal form. 2/5782 useless extension candidates. Maximal degree in co-relation 42154. Up to 5446 conditions per place. [2024-06-28 04:32:57,683 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 266 selfloop transitions, 47 changer transitions 0/318 dead transitions. [2024-06-28 04:32:57,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 318 transitions, 4816 flow [2024-06-28 04:32:57,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:32:57,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:32:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 04:32:57,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391156462585034 [2024-06-28 04:32:57,686 INFO L175 Difference]: Start difference. First operand has 228 places, 295 transitions, 3799 flow. Second operand 7 states and 115 transitions. [2024-06-28 04:32:57,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 318 transitions, 4816 flow [2024-06-28 04:32:58,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 318 transitions, 4713 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 04:32:58,010 INFO L231 Difference]: Finished difference. Result has 233 places, 303 transitions, 4014 flow [2024-06-28 04:32:58,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3696, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4014, PETRI_PLACES=233, PETRI_TRANSITIONS=303} [2024-06-28 04:32:58,011 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 190 predicate places. [2024-06-28 04:32:58,011 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 303 transitions, 4014 flow [2024-06-28 04:32:58,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:32:58,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:32:58,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:32:58,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 04:32:58,012 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:32:58,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:32:58,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1397953891, now seen corresponding path program 8 times [2024-06-28 04:32:58,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:32:58,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376483171] [2024-06-28 04:32:58,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:32:58,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:32:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:00,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:00,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376483171] [2024-06-28 04:33:00,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376483171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:00,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:00,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:33:00,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396838126] [2024-06-28 04:33:00,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:00,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:33:00,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:00,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:33:00,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:33:00,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:33:00,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 303 transitions, 4014 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:33:00,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:00,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:33:00,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:01,780 INFO L124 PetriNetUnfolderBase]: 3470/5777 cut-off events. [2024-06-28 04:33:01,780 INFO L125 PetriNetUnfolderBase]: For 255832/255832 co-relation queries the response was YES. [2024-06-28 04:33:01,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42711 conditions, 5777 events. 3470/5777 cut-off events. For 255832/255832 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 38240 event pairs, 877 based on Foata normal form. 2/5776 useless extension candidates. Maximal degree in co-relation 42604. Up to 5466 conditions per place. [2024-06-28 04:33:01,843 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 276 selfloop transitions, 37 changer transitions 0/318 dead transitions. [2024-06-28 04:33:01,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 318 transitions, 4751 flow [2024-06-28 04:33:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:33:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:33:01,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 04:33:01,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3843537414965986 [2024-06-28 04:33:01,845 INFO L175 Difference]: Start difference. First operand has 233 places, 303 transitions, 4014 flow. Second operand 7 states and 113 transitions. [2024-06-28 04:33:01,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 318 transitions, 4751 flow [2024-06-28 04:33:02,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 318 transitions, 4595 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-06-28 04:33:02,289 INFO L231 Difference]: Finished difference. Result has 237 places, 304 transitions, 3957 flow [2024-06-28 04:33:02,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3862, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3957, PETRI_PLACES=237, PETRI_TRANSITIONS=304} [2024-06-28 04:33:02,290 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 194 predicate places. [2024-06-28 04:33:02,290 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 304 transitions, 3957 flow [2024-06-28 04:33:02,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 04:33:02,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:02,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:02,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 04:33:02,290 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:02,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:02,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1120841795, now seen corresponding path program 1 times [2024-06-28 04:33:02,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:02,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462651309] [2024-06-28 04:33:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:02,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:04,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:04,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462651309] [2024-06-28 04:33:04,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462651309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:04,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:04,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:33:04,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141408746] [2024-06-28 04:33:04,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:04,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:33:04,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:04,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:33:04,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:33:04,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:33:04,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 304 transitions, 3957 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:04,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:04,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:33:04,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:06,726 INFO L124 PetriNetUnfolderBase]: 3518/5895 cut-off events. [2024-06-28 04:33:06,726 INFO L125 PetriNetUnfolderBase]: For 314546/314587 co-relation queries the response was YES. [2024-06-28 04:33:06,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44653 conditions, 5895 events. 3518/5895 cut-off events. For 314546/314587 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 39695 event pairs, 1481 based on Foata normal form. 14/5875 useless extension candidates. Maximal degree in co-relation 44544. Up to 5384 conditions per place. [2024-06-28 04:33:06,788 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 287 selfloop transitions, 35 changer transitions 0/342 dead transitions. [2024-06-28 04:33:06,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 342 transitions, 4917 flow [2024-06-28 04:33:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:33:06,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:33:06,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 04:33:06,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-28 04:33:06,789 INFO L175 Difference]: Start difference. First operand has 237 places, 304 transitions, 3957 flow. Second operand 8 states and 151 transitions. [2024-06-28 04:33:06,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 342 transitions, 4917 flow [2024-06-28 04:33:07,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 342 transitions, 4837 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 04:33:07,285 INFO L231 Difference]: Finished difference. Result has 240 places, 306 transitions, 3997 flow [2024-06-28 04:33:07,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3877, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3997, PETRI_PLACES=240, PETRI_TRANSITIONS=306} [2024-06-28 04:33:07,286 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 197 predicate places. [2024-06-28 04:33:07,286 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 306 transitions, 3997 flow [2024-06-28 04:33:07,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:07,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:07,287 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 04:33:07,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 04:33:07,287 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:07,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:07,287 INFO L85 PathProgramCache]: Analyzing trace with hash -137911886, now seen corresponding path program 1 times [2024-06-28 04:33:07,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:07,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393729839] [2024-06-28 04:33:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:07,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:09,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:09,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393729839] [2024-06-28 04:33:09,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393729839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:09,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:09,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:33:09,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383647603] [2024-06-28 04:33:09,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:09,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:33:09,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:09,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:33:09,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:33:09,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:33:09,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 306 transitions, 3997 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:09,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:09,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:33:09,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:11,449 INFO L124 PetriNetUnfolderBase]: 3640/6034 cut-off events. [2024-06-28 04:33:11,449 INFO L125 PetriNetUnfolderBase]: For 298347/298347 co-relation queries the response was YES. [2024-06-28 04:33:11,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45855 conditions, 6034 events. 3640/6034 cut-off events. For 298347/298347 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 40054 event pairs, 911 based on Foata normal form. 4/6037 useless extension candidates. Maximal degree in co-relation 45745. Up to 5643 conditions per place. [2024-06-28 04:33:11,506 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 294 selfloop transitions, 55 changer transitions 0/354 dead transitions. [2024-06-28 04:33:11,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 354 transitions, 5211 flow [2024-06-28 04:33:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:33:11,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:33:11,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 04:33:11,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 04:33:11,507 INFO L175 Difference]: Start difference. First operand has 240 places, 306 transitions, 3997 flow. Second operand 9 states and 159 transitions. [2024-06-28 04:33:11,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 354 transitions, 5211 flow [2024-06-28 04:33:11,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 354 transitions, 5161 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 04:33:11,949 INFO L231 Difference]: Finished difference. Result has 247 places, 322 transitions, 4357 flow [2024-06-28 04:33:11,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3947, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4357, PETRI_PLACES=247, PETRI_TRANSITIONS=322} [2024-06-28 04:33:11,949 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 204 predicate places. [2024-06-28 04:33:11,950 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 322 transitions, 4357 flow [2024-06-28 04:33:11,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:11,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:11,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:11,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 04:33:11,950 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:11,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:11,950 INFO L85 PathProgramCache]: Analyzing trace with hash 2043924867, now seen corresponding path program 2 times [2024-06-28 04:33:11,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:11,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763554893] [2024-06-28 04:33:11,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:11,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:14,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:14,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763554893] [2024-06-28 04:33:14,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763554893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:14,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:14,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:33:14,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550118162] [2024-06-28 04:33:14,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:14,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:33:14,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:14,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:33:14,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:33:14,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:33:14,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 322 transitions, 4357 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:14,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:14,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:33:14,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:16,336 INFO L124 PetriNetUnfolderBase]: 3601/6017 cut-off events. [2024-06-28 04:33:16,336 INFO L125 PetriNetUnfolderBase]: For 348489/348520 co-relation queries the response was YES. [2024-06-28 04:33:16,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47211 conditions, 6017 events. 3601/6017 cut-off events. For 348489/348520 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 40679 event pairs, 1528 based on Foata normal form. 15/6001 useless extension candidates. Maximal degree in co-relation 47097. Up to 5606 conditions per place. [2024-06-28 04:33:16,405 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 298 selfloop transitions, 33 changer transitions 0/351 dead transitions. [2024-06-28 04:33:16,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 351 transitions, 5189 flow [2024-06-28 04:33:16,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:33:16,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:33:16,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 04:33:16,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:33:16,407 INFO L175 Difference]: Start difference. First operand has 247 places, 322 transitions, 4357 flow. Second operand 8 states and 144 transitions. [2024-06-28 04:33:16,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 351 transitions, 5189 flow [2024-06-28 04:33:17,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 351 transitions, 5077 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-28 04:33:17,063 INFO L231 Difference]: Finished difference. Result has 252 places, 323 transitions, 4342 flow [2024-06-28 04:33:17,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4245, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4342, PETRI_PLACES=252, PETRI_TRANSITIONS=323} [2024-06-28 04:33:17,063 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 209 predicate places. [2024-06-28 04:33:17,064 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 323 transitions, 4342 flow [2024-06-28 04:33:17,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:17,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:17,064 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 04:33:17,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 04:33:17,064 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:17,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:17,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1170438984, now seen corresponding path program 2 times [2024-06-28 04:33:17,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:17,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819368514] [2024-06-28 04:33:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:17,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:19,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:19,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819368514] [2024-06-28 04:33:19,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819368514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:19,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:19,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:33:19,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811345680] [2024-06-28 04:33:19,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:19,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:33:19,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:33:19,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:33:19,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:33:19,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 323 transitions, 4342 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:19,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:19,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:33:19,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:21,608 INFO L124 PetriNetUnfolderBase]: 3704/6137 cut-off events. [2024-06-28 04:33:21,608 INFO L125 PetriNetUnfolderBase]: For 319937/319937 co-relation queries the response was YES. [2024-06-28 04:33:21,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47711 conditions, 6137 events. 3704/6137 cut-off events. For 319937/319937 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 40862 event pairs, 1139 based on Foata normal form. 4/6141 useless extension candidates. Maximal degree in co-relation 47595. Up to 5809 conditions per place. [2024-06-28 04:33:21,681 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 303 selfloop transitions, 43 changer transitions 0/351 dead transitions. [2024-06-28 04:33:21,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 351 transitions, 5240 flow [2024-06-28 04:33:21,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:33:21,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:33:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 04:33:21,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-28 04:33:21,682 INFO L175 Difference]: Start difference. First operand has 252 places, 323 transitions, 4342 flow. Second operand 8 states and 135 transitions. [2024-06-28 04:33:21,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 351 transitions, 5240 flow [2024-06-28 04:33:22,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 351 transitions, 5169 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 04:33:22,254 INFO L231 Difference]: Finished difference. Result has 254 places, 327 transitions, 4491 flow [2024-06-28 04:33:22,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4271, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4491, PETRI_PLACES=254, PETRI_TRANSITIONS=327} [2024-06-28 04:33:22,255 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 211 predicate places. [2024-06-28 04:33:22,255 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 327 transitions, 4491 flow [2024-06-28 04:33:22,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:22,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:22,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:22,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 04:33:22,255 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:22,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:22,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1123698755, now seen corresponding path program 3 times [2024-06-28 04:33:22,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:22,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114064074] [2024-06-28 04:33:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:22,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:25,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:25,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114064074] [2024-06-28 04:33:25,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114064074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:25,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:25,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:33:25,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808812870] [2024-06-28 04:33:25,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:25,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:33:25,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:25,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:33:25,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:33:25,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:33:25,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 327 transitions, 4491 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:25,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:25,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:33:25,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:27,717 INFO L124 PetriNetUnfolderBase]: 3630/6065 cut-off events. [2024-06-28 04:33:27,718 INFO L125 PetriNetUnfolderBase]: For 358342/358365 co-relation queries the response was YES. [2024-06-28 04:33:27,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48044 conditions, 6065 events. 3630/6065 cut-off events. For 358342/358365 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 41021 event pairs, 1524 based on Foata normal form. 13/6049 useless extension candidates. Maximal degree in co-relation 47927. Up to 5682 conditions per place. [2024-06-28 04:33:27,783 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 313 selfloop transitions, 18 changer transitions 0/351 dead transitions. [2024-06-28 04:33:27,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 351 transitions, 5299 flow [2024-06-28 04:33:27,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:33:27,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:33:27,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 04:33:27,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-28 04:33:27,784 INFO L175 Difference]: Start difference. First operand has 254 places, 327 transitions, 4491 flow. Second operand 8 states and 135 transitions. [2024-06-28 04:33:27,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 351 transitions, 5299 flow [2024-06-28 04:33:28,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 351 transitions, 5109 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 04:33:28,405 INFO L231 Difference]: Finished difference. Result has 256 places, 328 transitions, 4368 flow [2024-06-28 04:33:28,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4301, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4368, PETRI_PLACES=256, PETRI_TRANSITIONS=328} [2024-06-28 04:33:28,406 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 213 predicate places. [2024-06-28 04:33:28,406 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 328 transitions, 4368 flow [2024-06-28 04:33:28,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:28,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:28,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:28,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 04:33:28,406 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:28,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:28,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1404629059, now seen corresponding path program 4 times [2024-06-28 04:33:28,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:28,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137981833] [2024-06-28 04:33:28,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:28,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:31,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:31,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137981833] [2024-06-28 04:33:31,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137981833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:31,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:31,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:33:31,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199722352] [2024-06-28 04:33:31,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:31,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:33:31,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:31,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:33:31,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:33:31,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:33:31,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 328 transitions, 4368 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:31,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:31,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:33:31,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:33,112 INFO L124 PetriNetUnfolderBase]: 3770/6273 cut-off events. [2024-06-28 04:33:33,112 INFO L125 PetriNetUnfolderBase]: For 398639/398713 co-relation queries the response was YES. [2024-06-28 04:33:33,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50809 conditions, 6273 events. 3770/6273 cut-off events. For 398639/398713 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 42470 event pairs, 1406 based on Foata normal form. 15/6253 useless extension candidates. Maximal degree in co-relation 50691. Up to 5445 conditions per place. [2024-06-28 04:33:33,178 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 250 selfloop transitions, 102 changer transitions 0/372 dead transitions. [2024-06-28 04:33:33,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 372 transitions, 5679 flow [2024-06-28 04:33:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:33:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:33:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 04:33:33,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-28 04:33:33,179 INFO L175 Difference]: Start difference. First operand has 256 places, 328 transitions, 4368 flow. Second operand 9 states and 156 transitions. [2024-06-28 04:33:33,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 372 transitions, 5679 flow [2024-06-28 04:33:33,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 372 transitions, 5630 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 04:33:33,733 INFO L231 Difference]: Finished difference. Result has 260 places, 345 transitions, 5006 flow [2024-06-28 04:33:33,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4319, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5006, PETRI_PLACES=260, PETRI_TRANSITIONS=345} [2024-06-28 04:33:33,733 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 217 predicate places. [2024-06-28 04:33:33,733 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 345 transitions, 5006 flow [2024-06-28 04:33:33,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:33,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:33,734 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 04:33:33,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 04:33:33,734 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:33,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:33,734 INFO L85 PathProgramCache]: Analyzing trace with hash -914999129, now seen corresponding path program 1 times [2024-06-28 04:33:33,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:33,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530341444] [2024-06-28 04:33:33,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:33,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:36,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:36,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530341444] [2024-06-28 04:33:36,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530341444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:36,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:36,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:33:36,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536919774] [2024-06-28 04:33:36,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:36,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:33:36,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:36,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:33:36,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:33:36,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:33:36,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 345 transitions, 5006 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:36,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:36,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:33:36,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:38,415 INFO L124 PetriNetUnfolderBase]: 3861/6381 cut-off events. [2024-06-28 04:33:38,415 INFO L125 PetriNetUnfolderBase]: For 362901/362901 co-relation queries the response was YES. [2024-06-28 04:33:38,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52537 conditions, 6381 events. 3861/6381 cut-off events. For 362901/362901 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 42557 event pairs, 1166 based on Foata normal form. 1/6382 useless extension candidates. Maximal degree in co-relation 52417. Up to 6068 conditions per place. [2024-06-28 04:33:38,494 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 352 selfloop transitions, 45 changer transitions 0/402 dead transitions. [2024-06-28 04:33:38,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 402 transitions, 6388 flow [2024-06-28 04:33:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:33:38,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:33:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 04:33:38,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119047619047619 [2024-06-28 04:33:38,495 INFO L175 Difference]: Start difference. First operand has 260 places, 345 transitions, 5006 flow. Second operand 10 states and 173 transitions. [2024-06-28 04:33:38,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 402 transitions, 6388 flow [2024-06-28 04:33:39,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 402 transitions, 6333 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 04:33:39,231 INFO L231 Difference]: Finished difference. Result has 269 places, 366 transitions, 5477 flow [2024-06-28 04:33:39,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4951, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5477, PETRI_PLACES=269, PETRI_TRANSITIONS=366} [2024-06-28 04:33:39,231 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 226 predicate places. [2024-06-28 04:33:39,231 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 366 transitions, 5477 flow [2024-06-28 04:33:39,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:39,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:39,232 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 04:33:39,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 04:33:39,232 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:39,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:39,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1038892487, now seen corresponding path program 2 times [2024-06-28 04:33:39,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:39,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383148760] [2024-06-28 04:33:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:39,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:42,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:42,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:42,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383148760] [2024-06-28 04:33:42,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383148760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:42,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:42,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:33:42,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505956465] [2024-06-28 04:33:42,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:42,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:33:42,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:42,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:33:42,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:33:42,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:33:42,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 366 transitions, 5477 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:42,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:42,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:33:42,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:44,216 INFO L124 PetriNetUnfolderBase]: 3871/6395 cut-off events. [2024-06-28 04:33:44,217 INFO L125 PetriNetUnfolderBase]: For 378254/378254 co-relation queries the response was YES. [2024-06-28 04:33:44,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53740 conditions, 6395 events. 3871/6395 cut-off events. For 378254/378254 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 42642 event pairs, 1165 based on Foata normal form. 2/6397 useless extension candidates. Maximal degree in co-relation 53613. Up to 6056 conditions per place. [2024-06-28 04:33:44,297 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 350 selfloop transitions, 50 changer transitions 0/405 dead transitions. [2024-06-28 04:33:44,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 405 transitions, 6558 flow [2024-06-28 04:33:44,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:33:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:33:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 04:33:44,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-28 04:33:44,298 INFO L175 Difference]: Start difference. First operand has 269 places, 366 transitions, 5477 flow. Second operand 9 states and 157 transitions. [2024-06-28 04:33:44,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 405 transitions, 6558 flow [2024-06-28 04:33:45,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 405 transitions, 6403 flow, removed 73 selfloop flow, removed 2 redundant places. [2024-06-28 04:33:45,064 INFO L231 Difference]: Finished difference. Result has 276 places, 372 transitions, 5615 flow [2024-06-28 04:33:45,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5332, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5615, PETRI_PLACES=276, PETRI_TRANSITIONS=372} [2024-06-28 04:33:45,064 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 233 predicate places. [2024-06-28 04:33:45,064 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 372 transitions, 5615 flow [2024-06-28 04:33:45,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:45,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:45,065 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 04:33:45,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 04:33:45,065 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:45,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash -270939365, now seen corresponding path program 3 times [2024-06-28 04:33:45,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:45,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863503048] [2024-06-28 04:33:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:47,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:47,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863503048] [2024-06-28 04:33:47,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863503048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:47,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:47,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:33:47,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929374887] [2024-06-28 04:33:47,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:47,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:33:47,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:47,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:33:47,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:33:47,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:33:47,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 372 transitions, 5615 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:47,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:47,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:33:47,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:50,079 INFO L124 PetriNetUnfolderBase]: 3881/6409 cut-off events. [2024-06-28 04:33:50,080 INFO L125 PetriNetUnfolderBase]: For 394535/394535 co-relation queries the response was YES. [2024-06-28 04:33:50,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54784 conditions, 6409 events. 3881/6409 cut-off events. For 394535/394535 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 42685 event pairs, 1166 based on Foata normal form. 2/6411 useless extension candidates. Maximal degree in co-relation 54655. Up to 6106 conditions per place. [2024-06-28 04:33:50,157 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 364 selfloop transitions, 36 changer transitions 0/405 dead transitions. [2024-06-28 04:33:50,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 405 transitions, 6637 flow [2024-06-28 04:33:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:33:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:33:50,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 04:33:50,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021164021164021 [2024-06-28 04:33:50,158 INFO L175 Difference]: Start difference. First operand has 276 places, 372 transitions, 5615 flow. Second operand 9 states and 152 transitions. [2024-06-28 04:33:50,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 405 transitions, 6637 flow [2024-06-28 04:33:51,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 405 transitions, 6425 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-28 04:33:51,066 INFO L231 Difference]: Finished difference. Result has 277 places, 376 transitions, 5610 flow [2024-06-28 04:33:51,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5403, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5610, PETRI_PLACES=277, PETRI_TRANSITIONS=376} [2024-06-28 04:33:51,067 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 234 predicate places. [2024-06-28 04:33:51,067 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 376 transitions, 5610 flow [2024-06-28 04:33:51,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:51,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:51,067 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 04:33:51,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 04:33:51,067 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:51,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:51,067 INFO L85 PathProgramCache]: Analyzing trace with hash 822243408, now seen corresponding path program 3 times [2024-06-28 04:33:51,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:51,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019849441] [2024-06-28 04:33:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:51,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:53,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:53,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019849441] [2024-06-28 04:33:53,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019849441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:53,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:53,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:33:53,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338728590] [2024-06-28 04:33:53,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:53,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:33:53,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:53,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:33:53,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:33:53,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:33:53,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 376 transitions, 5610 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:53,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:53,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:33:53,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:33:55,634 INFO L124 PetriNetUnfolderBase]: 3891/6415 cut-off events. [2024-06-28 04:33:55,634 INFO L125 PetriNetUnfolderBase]: For 407078/407078 co-relation queries the response was YES. [2024-06-28 04:33:55,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55282 conditions, 6415 events. 3891/6415 cut-off events. For 407078/407078 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 42607 event pairs, 946 based on Foata normal form. 8/6422 useless extension candidates. Maximal degree in co-relation 55153. Up to 5996 conditions per place. [2024-06-28 04:33:55,704 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 337 selfloop transitions, 74 changer transitions 0/416 dead transitions. [2024-06-28 04:33:55,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 416 transitions, 6887 flow [2024-06-28 04:33:55,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:33:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:33:55,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 04:33:55,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-28 04:33:55,705 INFO L175 Difference]: Start difference. First operand has 277 places, 376 transitions, 5610 flow. Second operand 9 states and 158 transitions. [2024-06-28 04:33:55,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 416 transitions, 6887 flow [2024-06-28 04:33:56,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 416 transitions, 6520 flow, removed 150 selfloop flow, removed 7 redundant places. [2024-06-28 04:33:56,374 INFO L231 Difference]: Finished difference. Result has 279 places, 385 transitions, 5673 flow [2024-06-28 04:33:56,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5259, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5673, PETRI_PLACES=279, PETRI_TRANSITIONS=385} [2024-06-28 04:33:56,375 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2024-06-28 04:33:56,375 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 385 transitions, 5673 flow [2024-06-28 04:33:56,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:56,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:33:56,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:33:56,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 04:33:56,375 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:33:56,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:33:56,376 INFO L85 PathProgramCache]: Analyzing trace with hash -532940701, now seen corresponding path program 4 times [2024-06-28 04:33:56,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:33:56,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83233806] [2024-06-28 04:33:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:33:56,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:33:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:33:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:33:59,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:33:59,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83233806] [2024-06-28 04:33:59,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83233806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:33:59,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:33:59,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:33:59,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583474996] [2024-06-28 04:33:59,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:33:59,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:33:59,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:33:59,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:33:59,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:33:59,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:33:59,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 385 transitions, 5673 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:33:59,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:33:59,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:33:59,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:01,037 INFO L124 PetriNetUnfolderBase]: 3893/6418 cut-off events. [2024-06-28 04:34:01,037 INFO L125 PetriNetUnfolderBase]: For 391592/391592 co-relation queries the response was YES. [2024-06-28 04:34:01,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54886 conditions, 6418 events. 3893/6418 cut-off events. For 391592/391592 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 42651 event pairs, 944 based on Foata normal form. 2/6419 useless extension candidates. Maximal degree in co-relation 54756. Up to 6080 conditions per place. [2024-06-28 04:34:01,123 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 352 selfloop transitions, 56 changer transitions 0/413 dead transitions. [2024-06-28 04:34:01,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 413 transitions, 6669 flow [2024-06-28 04:34:01,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:34:01,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:34:01,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 04:34:01,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021164021164021 [2024-06-28 04:34:01,124 INFO L175 Difference]: Start difference. First operand has 279 places, 385 transitions, 5673 flow. Second operand 9 states and 152 transitions. [2024-06-28 04:34:01,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 413 transitions, 6669 flow [2024-06-28 04:34:01,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 413 transitions, 6382 flow, removed 96 selfloop flow, removed 5 redundant places. [2024-06-28 04:34:01,995 INFO L231 Difference]: Finished difference. Result has 283 places, 388 transitions, 5613 flow [2024-06-28 04:34:01,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5386, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5613, PETRI_PLACES=283, PETRI_TRANSITIONS=388} [2024-06-28 04:34:01,996 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 240 predicate places. [2024-06-28 04:34:01,996 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 388 transitions, 5613 flow [2024-06-28 04:34:01,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:01,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:01,996 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] [2024-06-28 04:34:01,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 04:34:01,997 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:01,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:01,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1262009998, now seen corresponding path program 1 times [2024-06-28 04:34:01,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:01,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804630124] [2024-06-28 04:34:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:01,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:04,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:04,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804630124] [2024-06-28 04:34:04,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804630124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:04,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:04,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:34:04,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811832092] [2024-06-28 04:34:04,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:04,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:34:04,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:04,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:34:04,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:34:04,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:34:04,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 388 transitions, 5613 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:04,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:04,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:34:04,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:06,980 INFO L124 PetriNetUnfolderBase]: 3937/6486 cut-off events. [2024-06-28 04:34:06,980 INFO L125 PetriNetUnfolderBase]: For 427266/427266 co-relation queries the response was YES. [2024-06-28 04:34:07,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55953 conditions, 6486 events. 3937/6486 cut-off events. For 427266/427266 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 43134 event pairs, 942 based on Foata normal form. 12/6497 useless extension candidates. Maximal degree in co-relation 55822. Up to 6043 conditions per place. [2024-06-28 04:34:07,065 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 353 selfloop transitions, 64 changer transitions 0/422 dead transitions. [2024-06-28 04:34:07,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 422 transitions, 6714 flow [2024-06-28 04:34:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:34:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:34:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 04:34:07,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-28 04:34:07,067 INFO L175 Difference]: Start difference. First operand has 283 places, 388 transitions, 5613 flow. Second operand 9 states and 160 transitions. [2024-06-28 04:34:07,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 422 transitions, 6714 flow [2024-06-28 04:34:07,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 422 transitions, 6509 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-28 04:34:07,900 INFO L231 Difference]: Finished difference. Result has 285 places, 389 transitions, 5563 flow [2024-06-28 04:34:07,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5408, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5563, PETRI_PLACES=285, PETRI_TRANSITIONS=389} [2024-06-28 04:34:07,900 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 242 predicate places. [2024-06-28 04:34:07,901 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 389 transitions, 5563 flow [2024-06-28 04:34:07,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:07,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:07,901 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 04:34:07,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 04:34:07,901 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:07,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:07,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1170529349, now seen corresponding path program 5 times [2024-06-28 04:34:07,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:07,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321305655] [2024-06-28 04:34:07,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:07,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:10,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:10,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:10,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321305655] [2024-06-28 04:34:10,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321305655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:10,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:10,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:34:10,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430231508] [2024-06-28 04:34:10,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:10,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:34:10,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:10,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:34:10,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:34:10,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:34:10,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 389 transitions, 5563 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:10,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:10,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:34:10,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:12,488 INFO L124 PetriNetUnfolderBase]: 3947/6511 cut-off events. [2024-06-28 04:34:12,488 INFO L125 PetriNetUnfolderBase]: For 417411/417411 co-relation queries the response was YES. [2024-06-28 04:34:12,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56314 conditions, 6511 events. 3947/6511 cut-off events. For 417411/417411 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 43410 event pairs, 1162 based on Foata normal form. 2/6513 useless extension candidates. Maximal degree in co-relation 56182. Up to 6130 conditions per place. [2024-06-28 04:34:12,575 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 356 selfloop transitions, 59 changer transitions 0/420 dead transitions. [2024-06-28 04:34:12,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 420 transitions, 6629 flow [2024-06-28 04:34:12,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:12,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:12,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 04:34:12,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 04:34:12,576 INFO L175 Difference]: Start difference. First operand has 285 places, 389 transitions, 5563 flow. Second operand 8 states and 138 transitions. [2024-06-28 04:34:12,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 420 transitions, 6629 flow [2024-06-28 04:34:13,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 420 transitions, 6499 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 04:34:13,551 INFO L231 Difference]: Finished difference. Result has 286 places, 393 transitions, 5709 flow [2024-06-28 04:34:13,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5433, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5709, PETRI_PLACES=286, PETRI_TRANSITIONS=393} [2024-06-28 04:34:13,551 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 243 predicate places. [2024-06-28 04:34:13,552 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 393 transitions, 5709 flow [2024-06-28 04:34:13,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:13,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:13,552 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 04:34:13,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 04:34:13,552 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:13,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:13,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1170439139, now seen corresponding path program 6 times [2024-06-28 04:34:13,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:13,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298369312] [2024-06-28 04:34:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:13,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:18,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:18,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298369312] [2024-06-28 04:34:18,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298369312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:18,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:18,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:34:18,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40718335] [2024-06-28 04:34:18,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:18,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:34:18,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:18,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:34:18,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:34:18,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:34:18,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 393 transitions, 5709 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:18,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:18,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:34:18,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:20,771 INFO L124 PetriNetUnfolderBase]: 3962/6523 cut-off events. [2024-06-28 04:34:20,771 INFO L125 PetriNetUnfolderBase]: For 438289/438289 co-relation queries the response was YES. [2024-06-28 04:34:20,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57511 conditions, 6523 events. 3962/6523 cut-off events. For 438289/438289 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 43423 event pairs, 945 based on Foata normal form. 3/6525 useless extension candidates. Maximal degree in co-relation 57378. Up to 6036 conditions per place. [2024-06-28 04:34:20,847 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 322 selfloop transitions, 97 changer transitions 0/424 dead transitions. [2024-06-28 04:34:20,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 424 transitions, 6918 flow [2024-06-28 04:34:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:20,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:20,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:34:20,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 04:34:20,848 INFO L175 Difference]: Start difference. First operand has 286 places, 393 transitions, 5709 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:34:20,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 424 transitions, 6918 flow [2024-06-28 04:34:21,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 424 transitions, 6702 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-28 04:34:21,806 INFO L231 Difference]: Finished difference. Result has 289 places, 400 transitions, 5993 flow [2024-06-28 04:34:21,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5493, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5993, PETRI_PLACES=289, PETRI_TRANSITIONS=400} [2024-06-28 04:34:21,807 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 246 predicate places. [2024-06-28 04:34:21,807 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 400 transitions, 5993 flow [2024-06-28 04:34:21,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:21,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:21,807 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 04:34:21,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 04:34:21,807 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:21,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:21,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1022829539, now seen corresponding path program 7 times [2024-06-28 04:34:21,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:21,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777321695] [2024-06-28 04:34:21,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:21,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:24,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:24,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:24,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777321695] [2024-06-28 04:34:24,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777321695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:24,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:24,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:34:24,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095550149] [2024-06-28 04:34:24,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:24,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:34:24,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:24,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:34:24,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:34:24,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:34:24,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 400 transitions, 5993 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:24,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:24,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:34:24,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:26,272 INFO L124 PetriNetUnfolderBase]: 3977/6548 cut-off events. [2024-06-28 04:34:26,272 INFO L125 PetriNetUnfolderBase]: For 467218/467218 co-relation queries the response was YES. [2024-06-28 04:34:26,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58886 conditions, 6548 events. 3977/6548 cut-off events. For 467218/467218 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 43560 event pairs, 945 based on Foata normal form. 2/6549 useless extension candidates. Maximal degree in co-relation 58751. Up to 6197 conditions per place. [2024-06-28 04:34:26,356 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 364 selfloop transitions, 61 changer transitions 0/430 dead transitions. [2024-06-28 04:34:26,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 430 transitions, 7132 flow [2024-06-28 04:34:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:26,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 04:34:26,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 04:34:26,357 INFO L175 Difference]: Start difference. First operand has 289 places, 400 transitions, 5993 flow. Second operand 8 states and 133 transitions. [2024-06-28 04:34:26,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 430 transitions, 7132 flow [2024-06-28 04:34:27,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 430 transitions, 6809 flow, removed 113 selfloop flow, removed 4 redundant places. [2024-06-28 04:34:27,376 INFO L231 Difference]: Finished difference. Result has 294 places, 410 transitions, 6057 flow [2024-06-28 04:34:27,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5672, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6057, PETRI_PLACES=294, PETRI_TRANSITIONS=410} [2024-06-28 04:34:27,376 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 251 predicate places. [2024-06-28 04:34:27,376 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 410 transitions, 6057 flow [2024-06-28 04:34:27,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:27,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:27,376 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 04:34:27,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 04:34:27,377 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:27,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:27,377 INFO L85 PathProgramCache]: Analyzing trace with hash -757257736, now seen corresponding path program 4 times [2024-06-28 04:34:27,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:27,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955087103] [2024-06-28 04:34:27,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:27,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:29,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:29,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955087103] [2024-06-28 04:34:29,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955087103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:29,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:29,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:34:29,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411838086] [2024-06-28 04:34:29,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:29,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:34:29,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:29,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:34:29,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:34:29,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:34:29,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 410 transitions, 6057 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:29,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:29,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:34:29,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:32,003 INFO L124 PetriNetUnfolderBase]: 4012/6603 cut-off events. [2024-06-28 04:34:32,003 INFO L125 PetriNetUnfolderBase]: For 502818/502818 co-relation queries the response was YES. [2024-06-28 04:34:32,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60508 conditions, 6603 events. 4012/6603 cut-off events. For 502818/502818 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 44083 event pairs, 947 based on Foata normal form. 7/6609 useless extension candidates. Maximal degree in co-relation 60370. Up to 6145 conditions per place. [2024-06-28 04:34:32,083 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 358 selfloop transitions, 80 changer transitions 0/443 dead transitions. [2024-06-28 04:34:32,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 443 transitions, 7386 flow [2024-06-28 04:34:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:34:32,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 04:34:32,084 INFO L175 Difference]: Start difference. First operand has 294 places, 410 transitions, 6057 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:34:32,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 443 transitions, 7386 flow [2024-06-28 04:34:32,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 443 transitions, 7137 flow, removed 77 selfloop flow, removed 5 redundant places. [2024-06-28 04:34:32,964 INFO L231 Difference]: Finished difference. Result has 297 places, 416 transitions, 6240 flow [2024-06-28 04:34:32,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5808, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6240, PETRI_PLACES=297, PETRI_TRANSITIONS=416} [2024-06-28 04:34:32,965 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 254 predicate places. [2024-06-28 04:34:32,965 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 416 transitions, 6240 flow [2024-06-28 04:34:32,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:32,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:32,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:32,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 04:34:32,965 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:32,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:32,966 INFO L85 PathProgramCache]: Analyzing trace with hash -757465126, now seen corresponding path program 5 times [2024-06-28 04:34:32,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:32,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599842413] [2024-06-28 04:34:32,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:32,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:35,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:35,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599842413] [2024-06-28 04:34:35,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599842413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:35,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:35,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:34:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865347524] [2024-06-28 04:34:35,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:35,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:34:35,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:35,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:34:35,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:34:35,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:34:35,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 416 transitions, 6240 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:35,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:35,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:34:35,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:37,418 INFO L124 PetriNetUnfolderBase]: 4042/6645 cut-off events. [2024-06-28 04:34:37,418 INFO L125 PetriNetUnfolderBase]: For 520322/520322 co-relation queries the response was YES. [2024-06-28 04:34:37,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61807 conditions, 6645 events. 4042/6645 cut-off events. For 520322/520322 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 44267 event pairs, 944 based on Foata normal form. 5/6649 useless extension candidates. Maximal degree in co-relation 61668. Up to 6181 conditions per place. [2024-06-28 04:34:37,513 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 370 selfloop transitions, 82 changer transitions 0/457 dead transitions. [2024-06-28 04:34:37,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 457 transitions, 7891 flow [2024-06-28 04:34:37,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:34:37,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 04:34:37,514 INFO L175 Difference]: Start difference. First operand has 297 places, 416 transitions, 6240 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:34:37,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 457 transitions, 7891 flow [2024-06-28 04:34:38,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 457 transitions, 7437 flow, removed 155 selfloop flow, removed 6 redundant places. [2024-06-28 04:34:38,507 INFO L231 Difference]: Finished difference. Result has 300 places, 427 transitions, 6479 flow [2024-06-28 04:34:38,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5935, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6479, PETRI_PLACES=300, PETRI_TRANSITIONS=427} [2024-06-28 04:34:38,508 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 257 predicate places. [2024-06-28 04:34:38,508 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 427 transitions, 6479 flow [2024-06-28 04:34:38,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:38,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:38,508 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 04:34:38,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 04:34:38,508 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:38,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:38,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1774180694, now seen corresponding path program 2 times [2024-06-28 04:34:38,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:38,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661651557] [2024-06-28 04:34:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:38,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:41,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:41,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:41,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661651557] [2024-06-28 04:34:41,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661651557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:41,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:41,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:34:41,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133643204] [2024-06-28 04:34:41,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:41,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:34:41,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:41,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:34:41,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:34:41,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:34:41,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 427 transitions, 6479 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:41,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:41,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:34:41,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:43,914 INFO L124 PetriNetUnfolderBase]: 4086/6711 cut-off events. [2024-06-28 04:34:43,915 INFO L125 PetriNetUnfolderBase]: For 532371/532371 co-relation queries the response was YES. [2024-06-28 04:34:43,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62047 conditions, 6711 events. 4086/6711 cut-off events. For 532371/532371 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 44758 event pairs, 949 based on Foata normal form. 12/6722 useless extension candidates. Maximal degree in co-relation 61906. Up to 6206 conditions per place. [2024-06-28 04:34:44,005 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 386 selfloop transitions, 65 changer transitions 0/456 dead transitions. [2024-06-28 04:34:44,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 456 transitions, 7669 flow [2024-06-28 04:34:44,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:44,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 04:34:44,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41964285714285715 [2024-06-28 04:34:44,006 INFO L175 Difference]: Start difference. First operand has 300 places, 427 transitions, 6479 flow. Second operand 8 states and 141 transitions. [2024-06-28 04:34:44,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 456 transitions, 7669 flow [2024-06-28 04:34:44,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 456 transitions, 7445 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-06-28 04:34:44,978 INFO L231 Difference]: Finished difference. Result has 304 places, 428 transitions, 6418 flow [2024-06-28 04:34:44,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6255, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6418, PETRI_PLACES=304, PETRI_TRANSITIONS=428} [2024-06-28 04:34:44,978 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-28 04:34:44,978 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 428 transitions, 6418 flow [2024-06-28 04:34:44,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:44,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:44,979 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 04:34:44,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 04:34:44,979 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:44,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:44,979 INFO L85 PathProgramCache]: Analyzing trace with hash 675974893, now seen corresponding path program 8 times [2024-06-28 04:34:44,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:44,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789119764] [2024-06-28 04:34:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:44,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:47,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:47,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789119764] [2024-06-28 04:34:47,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789119764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:47,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:47,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:34:47,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724243791] [2024-06-28 04:34:47,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:47,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:34:47,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:47,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:34:47,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:34:47,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:34:47,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 428 transitions, 6418 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:47,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:47,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:34:47,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:49,308 INFO L124 PetriNetUnfolderBase]: 4099/6740 cut-off events. [2024-06-28 04:34:49,309 INFO L125 PetriNetUnfolderBase]: For 510560/510560 co-relation queries the response was YES. [2024-06-28 04:34:49,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62195 conditions, 6740 events. 4099/6740 cut-off events. For 510560/510560 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 45136 event pairs, 1177 based on Foata normal form. 1/6740 useless extension candidates. Maximal degree in co-relation 62054. Up to 6379 conditions per place. [2024-06-28 04:34:49,402 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 403 selfloop transitions, 58 changer transitions 0/466 dead transitions. [2024-06-28 04:34:49,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 466 transitions, 7895 flow [2024-06-28 04:34:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 04:34:49,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 04:34:49,403 INFO L175 Difference]: Start difference. First operand has 304 places, 428 transitions, 6418 flow. Second operand 8 states and 138 transitions. [2024-06-28 04:34:49,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 466 transitions, 7895 flow [2024-06-28 04:34:50,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 466 transitions, 7761 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 04:34:50,471 INFO L231 Difference]: Finished difference. Result has 308 places, 441 transitions, 6784 flow [2024-06-28 04:34:50,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6286, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6784, PETRI_PLACES=308, PETRI_TRANSITIONS=441} [2024-06-28 04:34:50,472 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 265 predicate places. [2024-06-28 04:34:50,472 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 441 transitions, 6784 flow [2024-06-28 04:34:50,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:50,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:50,472 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 04:34:50,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 04:34:50,472 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:50,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:50,473 INFO L85 PathProgramCache]: Analyzing trace with hash 120385343, now seen corresponding path program 9 times [2024-06-28 04:34:50,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:50,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053245217] [2024-06-28 04:34:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:50,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:54,165 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 04:34:54,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:54,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053245217] [2024-06-28 04:34:54,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053245217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:54,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:54,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:34:54,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795778330] [2024-06-28 04:34:54,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:54,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:34:54,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:54,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:34:54,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:34:54,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:34:54,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 441 transitions, 6784 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:54,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:54,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:34:54,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:34:56,499 INFO L124 PetriNetUnfolderBase]: 4109/6751 cut-off events. [2024-06-28 04:34:56,499 INFO L125 PetriNetUnfolderBase]: For 521962/521962 co-relation queries the response was YES. [2024-06-28 04:34:56,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62954 conditions, 6751 events. 4109/6751 cut-off events. For 521962/521962 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 45147 event pairs, 1169 based on Foata normal form. 2/6752 useless extension candidates. Maximal degree in co-relation 62810. Up to 6388 conditions per place. [2024-06-28 04:34:56,586 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 415 selfloop transitions, 45 changer transitions 0/465 dead transitions. [2024-06-28 04:34:56,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 465 transitions, 7944 flow [2024-06-28 04:34:56,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:34:56,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:34:56,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 04:34:56,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 04:34:56,587 INFO L175 Difference]: Start difference. First operand has 308 places, 441 transitions, 6784 flow. Second operand 8 states and 133 transitions. [2024-06-28 04:34:56,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 465 transitions, 7944 flow [2024-06-28 04:34:57,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 465 transitions, 7755 flow, removed 84 selfloop flow, removed 2 redundant places. [2024-06-28 04:34:57,597 INFO L231 Difference]: Finished difference. Result has 314 places, 445 transitions, 6862 flow [2024-06-28 04:34:57,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6595, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6862, PETRI_PLACES=314, PETRI_TRANSITIONS=445} [2024-06-28 04:34:57,598 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 271 predicate places. [2024-06-28 04:34:57,598 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 445 transitions, 6862 flow [2024-06-28 04:34:57,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:57,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:34:57,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:34:57,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 04:34:57,598 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:34:57,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:34:57,599 INFO L85 PathProgramCache]: Analyzing trace with hash 376795643, now seen corresponding path program 10 times [2024-06-28 04:34:57,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:34:57,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798301330] [2024-06-28 04:34:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:34:57,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:34:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:34:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:34:59,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:34:59,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798301330] [2024-06-28 04:34:59,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798301330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:34:59,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:34:59,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:34:59,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291523114] [2024-06-28 04:34:59,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:34:59,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:34:59,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:34:59,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:34:59,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:34:59,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:34:59,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 445 transitions, 6862 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:34:59,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:34:59,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:34:59,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:02,002 INFO L124 PetriNetUnfolderBase]: 4130/6784 cut-off events. [2024-06-28 04:35:02,002 INFO L125 PetriNetUnfolderBase]: For 549331/549331 co-relation queries the response was YES. [2024-06-28 04:35:02,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64487 conditions, 6784 events. 4130/6784 cut-off events. For 549331/549331 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 45389 event pairs, 1173 based on Foata normal form. 1/6784 useless extension candidates. Maximal degree in co-relation 64341. Up to 6337 conditions per place. [2024-06-28 04:35:02,099 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 389 selfloop transitions, 94 changer transitions 0/488 dead transitions. [2024-06-28 04:35:02,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 488 transitions, 8589 flow [2024-06-28 04:35:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:02,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:02,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 04:35:02,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:35:02,100 INFO L175 Difference]: Start difference. First operand has 314 places, 445 transitions, 6862 flow. Second operand 8 states and 140 transitions. [2024-06-28 04:35:02,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 488 transitions, 8589 flow [2024-06-28 04:35:03,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 488 transitions, 8306 flow, removed 99 selfloop flow, removed 6 redundant places. [2024-06-28 04:35:03,126 INFO L231 Difference]: Finished difference. Result has 317 places, 462 transitions, 7226 flow [2024-06-28 04:35:03,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6579, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7226, PETRI_PLACES=317, PETRI_TRANSITIONS=462} [2024-06-28 04:35:03,126 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 274 predicate places. [2024-06-28 04:35:03,126 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 462 transitions, 7226 flow [2024-06-28 04:35:03,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:03,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:03,126 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 04:35:03,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 04:35:03,127 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:35:03,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:03,127 INFO L85 PathProgramCache]: Analyzing trace with hash 388223483, now seen corresponding path program 11 times [2024-06-28 04:35:03,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:03,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593840055] [2024-06-28 04:35:03,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:03,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:05,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:05,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:05,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593840055] [2024-06-28 04:35:05,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593840055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:05,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:05,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:05,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061088664] [2024-06-28 04:35:05,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:05,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:05,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:05,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:05,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:05,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:35:05,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 462 transitions, 7226 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:05,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:05,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:35:05,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:07,811 INFO L124 PetriNetUnfolderBase]: 4135/6805 cut-off events. [2024-06-28 04:35:07,811 INFO L125 PetriNetUnfolderBase]: For 563416/563416 co-relation queries the response was YES. [2024-06-28 04:35:07,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65300 conditions, 6805 events. 4135/6805 cut-off events. For 563416/563416 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 45616 event pairs, 1174 based on Foata normal form. 1/6805 useless extension candidates. Maximal degree in co-relation 65152. Up to 6343 conditions per place. [2024-06-28 04:35:07,903 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 381 selfloop transitions, 101 changer transitions 0/487 dead transitions. [2024-06-28 04:35:07,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 487 transitions, 8559 flow [2024-06-28 04:35:07,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:07,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 04:35:07,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-28 04:35:07,904 INFO L175 Difference]: Start difference. First operand has 317 places, 462 transitions, 7226 flow. Second operand 8 states and 135 transitions. [2024-06-28 04:35:07,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 487 transitions, 8559 flow [2024-06-28 04:35:09,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 487 transitions, 8335 flow, removed 84 selfloop flow, removed 3 redundant places. [2024-06-28 04:35:09,132 INFO L231 Difference]: Finished difference. Result has 322 places, 466 transitions, 7359 flow [2024-06-28 04:35:09,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7034, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7359, PETRI_PLACES=322, PETRI_TRANSITIONS=466} [2024-06-28 04:35:09,133 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 279 predicate places. [2024-06-28 04:35:09,133 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 466 transitions, 7359 flow [2024-06-28 04:35:09,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:09,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:09,133 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 04:35:09,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 04:35:09,133 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:35:09,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:09,134 INFO L85 PathProgramCache]: Analyzing trace with hash 473704054, now seen corresponding path program 6 times [2024-06-28 04:35:09,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:09,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345751993] [2024-06-28 04:35:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:09,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:11,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:11,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345751993] [2024-06-28 04:35:11,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345751993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:11,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:11,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:11,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101207214] [2024-06-28 04:35:11,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:11,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:11,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:11,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:11,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:11,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:35:11,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 466 transitions, 7359 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:11,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:11,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:35:11,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:14,034 INFO L124 PetriNetUnfolderBase]: 4155/6821 cut-off events. [2024-06-28 04:35:14,034 INFO L125 PetriNetUnfolderBase]: For 583936/583936 co-relation queries the response was YES. [2024-06-28 04:35:14,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66002 conditions, 6821 events. 4155/6821 cut-off events. For 583936/583936 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 45634 event pairs, 1169 based on Foata normal form. 4/6824 useless extension candidates. Maximal degree in co-relation 65852. Up to 6446 conditions per place. [2024-06-28 04:35:14,121 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 441 selfloop transitions, 45 changer transitions 0/491 dead transitions. [2024-06-28 04:35:14,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 491 transitions, 8591 flow [2024-06-28 04:35:14,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 04:35:14,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-28 04:35:14,122 INFO L175 Difference]: Start difference. First operand has 322 places, 466 transitions, 7359 flow. Second operand 8 states and 134 transitions. [2024-06-28 04:35:14,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 491 transitions, 8591 flow [2024-06-28 04:35:15,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 491 transitions, 8368 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 04:35:15,323 INFO L231 Difference]: Finished difference. Result has 326 places, 470 transitions, 7413 flow [2024-06-28 04:35:15,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7136, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7413, PETRI_PLACES=326, PETRI_TRANSITIONS=470} [2024-06-28 04:35:15,324 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 283 predicate places. [2024-06-28 04:35:15,324 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 470 transitions, 7413 flow [2024-06-28 04:35:15,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:15,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:15,324 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 04:35:15,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 04:35:15,324 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:35:15,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:15,325 INFO L85 PathProgramCache]: Analyzing trace with hash 911301983, now seen corresponding path program 12 times [2024-06-28 04:35:15,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:15,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188315808] [2024-06-28 04:35:15,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:15,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:19,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:19,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188315808] [2024-06-28 04:35:19,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188315808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:19,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:19,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:19,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177456454] [2024-06-28 04:35:19,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:19,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:19,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:19,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:19,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:19,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:35:19,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 470 transitions, 7413 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:19,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:19,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:35:19,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:22,056 INFO L124 PetriNetUnfolderBase]: 4157/6824 cut-off events. [2024-06-28 04:35:22,056 INFO L125 PetriNetUnfolderBase]: For 590886/590886 co-relation queries the response was YES. [2024-06-28 04:35:22,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66381 conditions, 6824 events. 4157/6824 cut-off events. For 590886/590886 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 45697 event pairs, 1165 based on Foata normal form. 1/6824 useless extension candidates. Maximal degree in co-relation 66230. Up to 6413 conditions per place. [2024-06-28 04:35:22,158 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 419 selfloop transitions, 72 changer transitions 0/496 dead transitions. [2024-06-28 04:35:22,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 496 transitions, 8636 flow [2024-06-28 04:35:22,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:35:22,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:35:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 04:35:22,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2024-06-28 04:35:22,159 INFO L175 Difference]: Start difference. First operand has 326 places, 470 transitions, 7413 flow. Second operand 9 states and 142 transitions. [2024-06-28 04:35:22,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 496 transitions, 8636 flow [2024-06-28 04:35:23,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 496 transitions, 8395 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-28 04:35:23,744 INFO L231 Difference]: Finished difference. Result has 330 places, 479 transitions, 7539 flow [2024-06-28 04:35:23,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7172, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7539, PETRI_PLACES=330, PETRI_TRANSITIONS=479} [2024-06-28 04:35:23,745 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 287 predicate places. [2024-06-28 04:35:23,745 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 479 transitions, 7539 flow [2024-06-28 04:35:23,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:23,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:23,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:23,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 04:35:23,746 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:35:23,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:23,746 INFO L85 PathProgramCache]: Analyzing trace with hash 474648538, now seen corresponding path program 7 times [2024-06-28 04:35:23,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:23,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895596023] [2024-06-28 04:35:23,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:23,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:26,974 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 04:35:26,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:26,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895596023] [2024-06-28 04:35:26,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895596023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:26,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:26,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:26,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918510239] [2024-06-28 04:35:26,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:26,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:26,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:26,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:26,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:27,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:35:27,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 479 transitions, 7539 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:27,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:27,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:35:27,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:29,317 INFO L124 PetriNetUnfolderBase]: 4175/6851 cut-off events. [2024-06-28 04:35:29,317 INFO L125 PetriNetUnfolderBase]: For 612304/612304 co-relation queries the response was YES. [2024-06-28 04:35:29,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67248 conditions, 6851 events. 4175/6851 cut-off events. For 612304/612304 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 45903 event pairs, 1161 based on Foata normal form. 2/6852 useless extension candidates. Maximal degree in co-relation 67095. Up to 6413 conditions per place. [2024-06-28 04:35:29,403 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 433 selfloop transitions, 67 changer transitions 0/505 dead transitions. [2024-06-28 04:35:29,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 505 transitions, 9011 flow [2024-06-28 04:35:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:29,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 04:35:29,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-28 04:35:29,404 INFO L175 Difference]: Start difference. First operand has 330 places, 479 transitions, 7539 flow. Second operand 8 states and 134 transitions. [2024-06-28 04:35:29,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 505 transitions, 9011 flow [2024-06-28 04:35:30,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 505 transitions, 8806 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-28 04:35:30,729 INFO L231 Difference]: Finished difference. Result has 333 places, 485 transitions, 7716 flow [2024-06-28 04:35:30,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7334, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7716, PETRI_PLACES=333, PETRI_TRANSITIONS=485} [2024-06-28 04:35:30,730 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 290 predicate places. [2024-06-28 04:35:30,730 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 485 transitions, 7716 flow [2024-06-28 04:35:30,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:30,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:30,730 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 04:35:30,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 04:35:30,730 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:35:30,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:30,730 INFO L85 PathProgramCache]: Analyzing trace with hash 475064248, now seen corresponding path program 8 times [2024-06-28 04:35:30,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:30,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978013745] [2024-06-28 04:35:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:30,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:33,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:33,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978013745] [2024-06-28 04:35:33,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978013745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:33,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:33,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:33,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338937448] [2024-06-28 04:35:33,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:33,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:33,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:33,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:33,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:33,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:35:33,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 485 transitions, 7716 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:33,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:33,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:35:33,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:36,204 INFO L124 PetriNetUnfolderBase]: 4169/6847 cut-off events. [2024-06-28 04:35:36,204 INFO L125 PetriNetUnfolderBase]: For 621868/621868 co-relation queries the response was YES. [2024-06-28 04:35:36,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67427 conditions, 6847 events. 4169/6847 cut-off events. For 621868/621868 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 46076 event pairs, 1645 based on Foata normal form. 2/6848 useless extension candidates. Maximal degree in co-relation 67272. Up to 6576 conditions per place. [2024-06-28 04:35:36,294 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 480 selfloop transitions, 18 changer transitions 0/503 dead transitions. [2024-06-28 04:35:36,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 503 transitions, 8790 flow [2024-06-28 04:35:36,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 04:35:36,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37202380952380953 [2024-06-28 04:35:36,295 INFO L175 Difference]: Start difference. First operand has 333 places, 485 transitions, 7716 flow. Second operand 8 states and 125 transitions. [2024-06-28 04:35:36,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 503 transitions, 8790 flow [2024-06-28 04:35:37,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 503 transitions, 8510 flow, removed 104 selfloop flow, removed 4 redundant places. [2024-06-28 04:35:37,549 INFO L231 Difference]: Finished difference. Result has 337 places, 485 transitions, 7478 flow [2024-06-28 04:35:37,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7436, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7478, PETRI_PLACES=337, PETRI_TRANSITIONS=485} [2024-06-28 04:35:37,550 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 294 predicate places. [2024-06-28 04:35:37,550 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 485 transitions, 7478 flow [2024-06-28 04:35:37,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:37,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:37,550 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 04:35:37,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 04:35:37,551 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:35:37,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:37,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1478305202, now seen corresponding path program 9 times [2024-06-28 04:35:37,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:37,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449472143] [2024-06-28 04:35:37,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:37,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:39,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:39,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:39,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449472143] [2024-06-28 04:35:39,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449472143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:39,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:39,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:39,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213839473] [2024-06-28 04:35:39,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:39,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:39,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:39,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:39,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:39,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:35:39,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 485 transitions, 7478 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:39,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:39,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:35:39,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:42,324 INFO L124 PetriNetUnfolderBase]: 4194/6861 cut-off events. [2024-06-28 04:35:42,325 INFO L125 PetriNetUnfolderBase]: For 634938/634938 co-relation queries the response was YES. [2024-06-28 04:35:42,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67806 conditions, 6861 events. 4194/6861 cut-off events. For 634938/634938 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 45667 event pairs, 954 based on Foata normal form. 5/6863 useless extension candidates. Maximal degree in co-relation 67649. Up to 6479 conditions per place. [2024-06-28 04:35:42,433 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 451 selfloop transitions, 55 changer transitions 0/511 dead transitions. [2024-06-28 04:35:42,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 511 transitions, 9001 flow [2024-06-28 04:35:42,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 04:35:42,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-28 04:35:42,436 INFO L175 Difference]: Start difference. First operand has 337 places, 485 transitions, 7478 flow. Second operand 8 states and 129 transitions. [2024-06-28 04:35:42,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 511 transitions, 9001 flow [2024-06-28 04:35:43,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 511 transitions, 8903 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 04:35:43,799 INFO L231 Difference]: Finished difference. Result has 337 places, 491 transitions, 7752 flow [2024-06-28 04:35:43,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7380, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7752, PETRI_PLACES=337, PETRI_TRANSITIONS=491} [2024-06-28 04:35:43,799 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 294 predicate places. [2024-06-28 04:35:43,800 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 491 transitions, 7752 flow [2024-06-28 04:35:43,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:43,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:43,800 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 04:35:43,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 04:35:43,800 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:35:43,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash 386899775, now seen corresponding path program 13 times [2024-06-28 04:35:43,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:43,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503784352] [2024-06-28 04:35:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:43,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:46,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:46,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503784352] [2024-06-28 04:35:46,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503784352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:46,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:46,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:46,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664000114] [2024-06-28 04:35:46,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:46,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:46,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:46,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:46,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:46,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:35:46,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 491 transitions, 7752 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:46,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:46,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:35:46,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:48,796 INFO L124 PetriNetUnfolderBase]: 4196/6864 cut-off events. [2024-06-28 04:35:48,796 INFO L125 PetriNetUnfolderBase]: For 644776/644776 co-relation queries the response was YES. [2024-06-28 04:35:48,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68494 conditions, 6864 events. 4196/6864 cut-off events. For 644776/644776 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 45716 event pairs, 966 based on Foata normal form. 2/6863 useless extension candidates. Maximal degree in co-relation 68337. Up to 6522 conditions per place. [2024-06-28 04:35:48,885 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 452 selfloop transitions, 52 changer transitions 0/509 dead transitions. [2024-06-28 04:35:48,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 509 transitions, 8991 flow [2024-06-28 04:35:48,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:48,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:48,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 04:35:48,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:35:48,886 INFO L175 Difference]: Start difference. First operand has 337 places, 491 transitions, 7752 flow. Second operand 8 states and 126 transitions. [2024-06-28 04:35:48,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 509 transitions, 8991 flow [2024-06-28 04:35:50,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 509 transitions, 8707 flow, removed 82 selfloop flow, removed 5 redundant places. [2024-06-28 04:35:50,073 INFO L231 Difference]: Finished difference. Result has 341 places, 496 transitions, 7784 flow [2024-06-28 04:35:50,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7468, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7784, PETRI_PLACES=341, PETRI_TRANSITIONS=496} [2024-06-28 04:35:50,073 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 298 predicate places. [2024-06-28 04:35:50,073 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 496 transitions, 7784 flow [2024-06-28 04:35:50,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:50,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:50,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:35:50,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 04:35:50,074 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:35:50,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:50,074 INFO L85 PathProgramCache]: Analyzing trace with hash 386899930, now seen corresponding path program 10 times [2024-06-28 04:35:50,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:50,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373028120] [2024-06-28 04:35:50,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:50,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:52,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:52,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:52,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373028120] [2024-06-28 04:35:52,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373028120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:52,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:52,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:52,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299945173] [2024-06-28 04:35:52,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:52,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:52,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:52,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:52,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:52,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:35:52,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 496 transitions, 7784 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:52,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:52,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:35:52,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:35:54,877 INFO L124 PetriNetUnfolderBase]: 4253/6951 cut-off events. [2024-06-28 04:35:54,877 INFO L125 PetriNetUnfolderBase]: For 692599/692599 co-relation queries the response was YES. [2024-06-28 04:35:54,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70727 conditions, 6951 events. 4253/6951 cut-off events. For 692599/692599 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 46341 event pairs, 959 based on Foata normal form. 5/6953 useless extension candidates. Maximal degree in co-relation 70568. Up to 6502 conditions per place. [2024-06-28 04:35:54,977 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 454 selfloop transitions, 71 changer transitions 0/530 dead transitions. [2024-06-28 04:35:54,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 530 transitions, 9801 flow [2024-06-28 04:35:54,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:35:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:35:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 04:35:54,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 04:35:54,978 INFO L175 Difference]: Start difference. First operand has 341 places, 496 transitions, 7784 flow. Second operand 8 states and 132 transitions. [2024-06-28 04:35:54,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 530 transitions, 9801 flow [2024-06-28 04:35:56,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 530 transitions, 9479 flow, removed 117 selfloop flow, removed 5 redundant places. [2024-06-28 04:35:56,440 INFO L231 Difference]: Finished difference. Result has 344 places, 506 transitions, 8124 flow [2024-06-28 04:35:56,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7462, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8124, PETRI_PLACES=344, PETRI_TRANSITIONS=506} [2024-06-28 04:35:56,442 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 301 predicate places. [2024-06-28 04:35:56,442 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 506 transitions, 8124 flow [2024-06-28 04:35:56,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:56,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:35:56,442 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 04:35:56,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 04:35:56,442 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:35:56,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:35:56,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1685166962, now seen corresponding path program 11 times [2024-06-28 04:35:56,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:35:56,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747350281] [2024-06-28 04:35:56,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:35:56,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:35:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:35:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:35:58,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:35:58,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747350281] [2024-06-28 04:35:58,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747350281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:35:58,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:35:58,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:35:58,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504251191] [2024-06-28 04:35:58,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:35:58,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:35:58,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:35:58,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:35:58,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:35:58,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:35:58,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 506 transitions, 8124 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:35:58,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:35:58,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:35:58,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:01,217 INFO L124 PetriNetUnfolderBase]: 4288/7021 cut-off events. [2024-06-28 04:36:01,217 INFO L125 PetriNetUnfolderBase]: For 723888/723888 co-relation queries the response was YES. [2024-06-28 04:36:01,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71994 conditions, 7021 events. 4288/7021 cut-off events. For 723888/723888 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 47241 event pairs, 1655 based on Foata normal form. 5/7025 useless extension candidates. Maximal degree in co-relation 71834. Up to 6730 conditions per place. [2024-06-28 04:36:01,326 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 502 selfloop transitions, 25 changer transitions 0/532 dead transitions. [2024-06-28 04:36:01,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 532 transitions, 9589 flow [2024-06-28 04:36:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:36:01,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:36:01,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 04:36:01,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37202380952380953 [2024-06-28 04:36:01,327 INFO L175 Difference]: Start difference. First operand has 344 places, 506 transitions, 8124 flow. Second operand 8 states and 125 transitions. [2024-06-28 04:36:01,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 532 transitions, 9589 flow [2024-06-28 04:36:03,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 532 transitions, 9330 flow, removed 100 selfloop flow, removed 4 redundant places. [2024-06-28 04:36:03,070 INFO L231 Difference]: Finished difference. Result has 348 places, 514 transitions, 8198 flow [2024-06-28 04:36:03,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7865, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8198, PETRI_PLACES=348, PETRI_TRANSITIONS=514} [2024-06-28 04:36:03,071 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2024-06-28 04:36:03,071 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 514 transitions, 8198 flow [2024-06-28 04:36:03,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:03,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:03,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:36:03,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 04:36:03,071 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:36:03,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:03,072 INFO L85 PathProgramCache]: Analyzing trace with hash 593820125, now seen corresponding path program 14 times [2024-06-28 04:36:03,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:03,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053042562] [2024-06-28 04:36:03,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:03,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:05,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:05,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053042562] [2024-06-28 04:36:05,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053042562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:05,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:05,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:36:05,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034172245] [2024-06-28 04:36:05,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:05,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:36:05,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:05,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:36:05,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:36:05,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:36:05,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 514 transitions, 8198 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:05,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:05,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:36:05,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:08,279 INFO L124 PetriNetUnfolderBase]: 4345/7092 cut-off events. [2024-06-28 04:36:08,279 INFO L125 PetriNetUnfolderBase]: For 744321/744321 co-relation queries the response was YES. [2024-06-28 04:36:08,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74125 conditions, 7092 events. 4345/7092 cut-off events. For 744321/744321 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 47314 event pairs, 797 based on Foata normal form. 1/7090 useless extension candidates. Maximal degree in co-relation 73963. Up to 6154 conditions per place. [2024-06-28 04:36:08,390 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 352 selfloop transitions, 192 changer transitions 0/549 dead transitions. [2024-06-28 04:36:08,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 549 transitions, 10070 flow [2024-06-28 04:36:08,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:36:08,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:36:08,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 04:36:08,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021164021164021 [2024-06-28 04:36:08,391 INFO L175 Difference]: Start difference. First operand has 348 places, 514 transitions, 8198 flow. Second operand 9 states and 152 transitions. [2024-06-28 04:36:08,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 549 transitions, 10070 flow [2024-06-28 04:36:10,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 549 transitions, 9734 flow, removed 143 selfloop flow, removed 5 redundant places. [2024-06-28 04:36:10,457 INFO L231 Difference]: Finished difference. Result has 353 places, 525 transitions, 8745 flow [2024-06-28 04:36:10,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7912, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8745, PETRI_PLACES=353, PETRI_TRANSITIONS=525} [2024-06-28 04:36:10,458 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 310 predicate places. [2024-06-28 04:36:10,458 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 525 transitions, 8745 flow [2024-06-28 04:36:10,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:10,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:10,458 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 04:36:10,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 04:36:10,458 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:36:10,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:10,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1684751252, now seen corresponding path program 12 times [2024-06-28 04:36:10,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:10,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123394914] [2024-06-28 04:36:10,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:10,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:12,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:12,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123394914] [2024-06-28 04:36:12,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123394914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:12,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:12,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:36:12,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160105145] [2024-06-28 04:36:12,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:12,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:36:12,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:12,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:36:12,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:36:12,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:36:12,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 525 transitions, 8745 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:12,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:12,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:36:12,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:15,358 INFO L124 PetriNetUnfolderBase]: 4381/7153 cut-off events. [2024-06-28 04:36:15,358 INFO L125 PetriNetUnfolderBase]: For 786188/786188 co-relation queries the response was YES. [2024-06-28 04:36:15,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76812 conditions, 7153 events. 4381/7153 cut-off events. For 786188/786188 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 47778 event pairs, 967 based on Foata normal form. 4/7154 useless extension candidates. Maximal degree in co-relation 76648. Up to 6501 conditions per place. [2024-06-28 04:36:15,457 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 429 selfloop transitions, 127 changer transitions 0/561 dead transitions. [2024-06-28 04:36:15,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 561 transitions, 11058 flow [2024-06-28 04:36:15,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:36:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:36:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 04:36:15,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-28 04:36:15,458 INFO L175 Difference]: Start difference. First operand has 353 places, 525 transitions, 8745 flow. Second operand 8 states and 135 transitions. [2024-06-28 04:36:15,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 561 transitions, 11058 flow [2024-06-28 04:36:17,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 561 transitions, 10956 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 04:36:17,104 INFO L231 Difference]: Finished difference. Result has 357 places, 534 transitions, 9440 flow [2024-06-28 04:36:17,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8649, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9440, PETRI_PLACES=357, PETRI_TRANSITIONS=534} [2024-06-28 04:36:17,104 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 314 predicate places. [2024-06-28 04:36:17,104 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 534 transitions, 9440 flow [2024-06-28 04:36:17,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:17,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:17,105 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 04:36:17,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 04:36:17,105 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:36:17,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:17,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1684751097, now seen corresponding path program 15 times [2024-06-28 04:36:17,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:17,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659747296] [2024-06-28 04:36:17,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:17,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:19,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:19,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659747296] [2024-06-28 04:36:19,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659747296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:19,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:19,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:36:19,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803821410] [2024-06-28 04:36:19,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:19,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:36:19,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:19,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:36:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:36:19,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:36:19,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 534 transitions, 9440 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:19,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:19,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:36:19,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:22,446 INFO L124 PetriNetUnfolderBase]: 4383/7156 cut-off events. [2024-06-28 04:36:22,446 INFO L125 PetriNetUnfolderBase]: For 803501/803501 co-relation queries the response was YES. [2024-06-28 04:36:22,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77840 conditions, 7156 events. 4383/7156 cut-off events. For 803501/803501 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 47813 event pairs, 970 based on Foata normal form. 2/7155 useless extension candidates. Maximal degree in co-relation 77674. Up to 6756 conditions per place. [2024-06-28 04:36:22,564 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 467 selfloop transitions, 77 changer transitions 0/549 dead transitions. [2024-06-28 04:36:22,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 549 transitions, 10726 flow [2024-06-28 04:36:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:36:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:36:22,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 04:36:22,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37797619047619047 [2024-06-28 04:36:22,565 INFO L175 Difference]: Start difference. First operand has 357 places, 534 transitions, 9440 flow. Second operand 8 states and 127 transitions. [2024-06-28 04:36:22,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 549 transitions, 10726 flow [2024-06-28 04:36:24,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 549 transitions, 10321 flow, removed 139 selfloop flow, removed 4 redundant places. [2024-06-28 04:36:24,812 INFO L231 Difference]: Finished difference. Result has 361 places, 537 transitions, 9365 flow [2024-06-28 04:36:24,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9035, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9365, PETRI_PLACES=361, PETRI_TRANSITIONS=537} [2024-06-28 04:36:24,812 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 318 predicate places. [2024-06-28 04:36:24,812 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 537 transitions, 9365 flow [2024-06-28 04:36:24,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:24,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:24,812 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 04:36:24,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 04:36:24,813 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:36:24,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:24,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1884468752, now seen corresponding path program 13 times [2024-06-28 04:36:24,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:24,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355999367] [2024-06-28 04:36:24,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:24,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:27,340 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 04:36:27,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:27,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355999367] [2024-06-28 04:36:27,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355999367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:27,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:27,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:36:27,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912242362] [2024-06-28 04:36:27,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:27,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:36:27,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:27,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:36:27,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:36:27,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:36:27,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 537 transitions, 9365 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:27,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:27,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:36:27,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:30,538 INFO L124 PetriNetUnfolderBase]: 4454/7300 cut-off events. [2024-06-28 04:36:30,539 INFO L125 PetriNetUnfolderBase]: For 873315/873315 co-relation queries the response was YES. [2024-06-28 04:36:30,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80906 conditions, 7300 events. 4454/7300 cut-off events. For 873315/873315 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 49322 event pairs, 1673 based on Foata normal form. 5/7304 useless extension candidates. Maximal degree in co-relation 80738. Up to 6871 conditions per place. [2024-06-28 04:36:30,654 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 532 selfloop transitions, 48 changer transitions 0/585 dead transitions. [2024-06-28 04:36:30,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 585 transitions, 12001 flow [2024-06-28 04:36:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:36:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:36:30,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 04:36:30,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:36:30,655 INFO L175 Difference]: Start difference. First operand has 361 places, 537 transitions, 9365 flow. Second operand 10 states and 160 transitions. [2024-06-28 04:36:30,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 585 transitions, 12001 flow [2024-06-28 04:36:32,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 585 transitions, 11557 flow, removed 149 selfloop flow, removed 6 redundant places. [2024-06-28 04:36:32,977 INFO L231 Difference]: Finished difference. Result has 368 places, 556 transitions, 9812 flow [2024-06-28 04:36:32,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8921, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9812, PETRI_PLACES=368, PETRI_TRANSITIONS=556} [2024-06-28 04:36:32,977 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 325 predicate places. [2024-06-28 04:36:32,977 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 556 transitions, 9812 flow [2024-06-28 04:36:32,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:32,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:32,978 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 04:36:32,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 04:36:32,978 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:36:32,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:32,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1877802512, now seen corresponding path program 14 times [2024-06-28 04:36:32,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:32,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887660860] [2024-06-28 04:36:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:32,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:35,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:35,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887660860] [2024-06-28 04:36:35,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887660860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:35,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:35,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:36:35,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636911860] [2024-06-28 04:36:35,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:35,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:36:35,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:35,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:36:35,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:36:35,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:36:35,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 556 transitions, 9812 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:35,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:35,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:36:35,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:37,758 INFO L124 PetriNetUnfolderBase]: 4442/7282 cut-off events. [2024-06-28 04:36:37,758 INFO L125 PetriNetUnfolderBase]: For 875884/875884 co-relation queries the response was YES. [2024-06-28 04:36:37,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80987 conditions, 7282 events. 4442/7282 cut-off events. For 875884/875884 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 49207 event pairs, 1671 based on Foata normal form. 4/7285 useless extension candidates. Maximal degree in co-relation 80815. Up to 6972 conditions per place. [2024-06-28 04:36:37,881 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 549 selfloop transitions, 19 changer transitions 0/573 dead transitions. [2024-06-28 04:36:37,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 573 transitions, 11141 flow [2024-06-28 04:36:37,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:36:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:36:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 04:36:37,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601190476190476 [2024-06-28 04:36:37,882 INFO L175 Difference]: Start difference. First operand has 368 places, 556 transitions, 9812 flow. Second operand 8 states and 121 transitions. [2024-06-28 04:36:37,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 573 transitions, 11141 flow [2024-06-28 04:36:40,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 573 transitions, 10867 flow, removed 101 selfloop flow, removed 6 redundant places. [2024-06-28 04:36:40,016 INFO L231 Difference]: Finished difference. Result has 371 places, 557 transitions, 9638 flow [2024-06-28 04:36:40,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9544, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9638, PETRI_PLACES=371, PETRI_TRANSITIONS=557} [2024-06-28 04:36:40,017 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 328 predicate places. [2024-06-28 04:36:40,017 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 557 transitions, 9638 flow [2024-06-28 04:36:40,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:40,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:40,017 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 04:36:40,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 04:36:40,018 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:36:40,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:40,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1892095248, now seen corresponding path program 3 times [2024-06-28 04:36:40,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:40,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594128584] [2024-06-28 04:36:40,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:40,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:43,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:43,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:43,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594128584] [2024-06-28 04:36:43,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594128584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:43,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:43,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:36:43,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738381007] [2024-06-28 04:36:43,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:43,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:36:43,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:43,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:36:43,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:36:43,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:36:43,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 557 transitions, 9638 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:43,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:43,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:36:43,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:46,018 INFO L124 PetriNetUnfolderBase]: 4542/7434 cut-off events. [2024-06-28 04:36:46,018 INFO L125 PetriNetUnfolderBase]: For 946085/946085 co-relation queries the response was YES. [2024-06-28 04:36:46,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83243 conditions, 7434 events. 4542/7434 cut-off events. For 946085/946085 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 50238 event pairs, 1677 based on Foata normal form. 8/7441 useless extension candidates. Maximal degree in co-relation 83069. Up to 7004 conditions per place. [2024-06-28 04:36:46,135 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 555 selfloop transitions, 24 changer transitions 0/584 dead transitions. [2024-06-28 04:36:46,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 584 transitions, 11420 flow [2024-06-28 04:36:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:36:46,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:36:46,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 04:36:46,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2024-06-28 04:36:46,136 INFO L175 Difference]: Start difference. First operand has 371 places, 557 transitions, 9638 flow. Second operand 9 states and 142 transitions. [2024-06-28 04:36:46,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 584 transitions, 11420 flow [2024-06-28 04:36:48,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 584 transitions, 11347 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 04:36:48,466 INFO L231 Difference]: Finished difference. Result has 375 places, 559 transitions, 9667 flow [2024-06-28 04:36:48,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9565, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9667, PETRI_PLACES=375, PETRI_TRANSITIONS=559} [2024-06-28 04:36:48,467 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 332 predicate places. [2024-06-28 04:36:48,467 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 559 transitions, 9667 flow [2024-06-28 04:36:48,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:48,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:48,467 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 04:36:48,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 04:36:48,467 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:36:48,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:48,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1478313138, now seen corresponding path program 4 times [2024-06-28 04:36:48,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:48,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695670628] [2024-06-28 04:36:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:48,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:36:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:36:51,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:36:51,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695670628] [2024-06-28 04:36:51,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695670628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:36:51,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:36:51,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:36:51,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963942698] [2024-06-28 04:36:51,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:36:51,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:36:51,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:36:51,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:36:51,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:36:51,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:36:51,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 559 transitions, 9667 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:51,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:36:51,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:36:51,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:36:54,506 INFO L124 PetriNetUnfolderBase]: 4560/7441 cut-off events. [2024-06-28 04:36:54,506 INFO L125 PetriNetUnfolderBase]: For 954290/954290 co-relation queries the response was YES. [2024-06-28 04:36:54,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83265 conditions, 7441 events. 4560/7441 cut-off events. For 954290/954290 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 49858 event pairs, 1002 based on Foata normal form. 12/7450 useless extension candidates. Maximal degree in co-relation 83090. Up to 6947 conditions per place. [2024-06-28 04:36:54,631 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 515 selfloop transitions, 62 changer transitions 0/582 dead transitions. [2024-06-28 04:36:54,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 582 transitions, 11228 flow [2024-06-28 04:36:54,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:36:54,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:36:54,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 04:36:54,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-28 04:36:54,632 INFO L175 Difference]: Start difference. First operand has 375 places, 559 transitions, 9667 flow. Second operand 8 states and 134 transitions. [2024-06-28 04:36:54,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 582 transitions, 11228 flow [2024-06-28 04:36:57,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 582 transitions, 11191 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 04:36:57,436 INFO L231 Difference]: Finished difference. Result has 378 places, 560 transitions, 9788 flow [2024-06-28 04:36:57,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9630, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9788, PETRI_PLACES=378, PETRI_TRANSITIONS=560} [2024-06-28 04:36:57,436 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 335 predicate places. [2024-06-28 04:36:57,436 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 560 transitions, 9788 flow [2024-06-28 04:36:57,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:36:57,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:36:57,437 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 04:36:57,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 04:36:57,437 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:36:57,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:36:57,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1891620018, now seen corresponding path program 5 times [2024-06-28 04:36:57,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:36:57,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27570120] [2024-06-28 04:36:57,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:36:57,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:36:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:00,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:00,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27570120] [2024-06-28 04:37:00,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27570120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:00,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:00,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75541050] [2024-06-28 04:37:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:00,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:00,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:00,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:00,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:01,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:37:01,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 560 transitions, 9788 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:01,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:01,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:37:01,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:03,971 INFO L124 PetriNetUnfolderBase]: 4532/7424 cut-off events. [2024-06-28 04:37:03,971 INFO L125 PetriNetUnfolderBase]: For 923995/923995 co-relation queries the response was YES. [2024-06-28 04:37:04,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82198 conditions, 7424 events. 4532/7424 cut-off events. For 923995/923995 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 50210 event pairs, 1683 based on Foata normal form. 12/7435 useless extension candidates. Maximal degree in co-relation 82021. Up to 7060 conditions per place. [2024-06-28 04:37:04,089 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 553 selfloop transitions, 21 changer transitions 0/579 dead transitions. [2024-06-28 04:37:04,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 579 transitions, 11208 flow [2024-06-28 04:37:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:37:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:37:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 04:37:04,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:37:04,091 INFO L175 Difference]: Start difference. First operand has 378 places, 560 transitions, 9788 flow. Second operand 8 states and 126 transitions. [2024-06-28 04:37:04,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 579 transitions, 11208 flow [2024-06-28 04:37:06,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 579 transitions, 11072 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 04:37:06,544 INFO L231 Difference]: Finished difference. Result has 380 places, 560 transitions, 9700 flow [2024-06-28 04:37:06,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9652, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9700, PETRI_PLACES=380, PETRI_TRANSITIONS=560} [2024-06-28 04:37:06,545 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 337 predicate places. [2024-06-28 04:37:06,545 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 560 transitions, 9700 flow [2024-06-28 04:37:06,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:06,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:06,545 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 04:37:06,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 04:37:06,545 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:37:06,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:06,545 INFO L85 PathProgramCache]: Analyzing trace with hash 475079128, now seen corresponding path program 1 times [2024-06-28 04:37:06,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:06,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698270516] [2024-06-28 04:37:06,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:06,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:10,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:10,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698270516] [2024-06-28 04:37:10,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698270516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:10,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:10,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:10,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758876627] [2024-06-28 04:37:10,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:10,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:10,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:10,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:10,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:37:10,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 560 transitions, 9700 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:10,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:10,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:37:10,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:12,867 INFO L124 PetriNetUnfolderBase]: 4527/7415 cut-off events. [2024-06-28 04:37:12,867 INFO L125 PetriNetUnfolderBase]: For 891530/891530 co-relation queries the response was YES. [2024-06-28 04:37:12,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81755 conditions, 7415 events. 4527/7415 cut-off events. For 891530/891530 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 50140 event pairs, 1674 based on Foata normal form. 2/7416 useless extension candidates. Maximal degree in co-relation 81577. Up to 7104 conditions per place. [2024-06-28 04:37:12,990 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 558 selfloop transitions, 17 changer transitions 0/580 dead transitions. [2024-06-28 04:37:12,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 580 transitions, 11016 flow [2024-06-28 04:37:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:37:12,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:37:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 04:37:12,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 04:37:12,992 INFO L175 Difference]: Start difference. First operand has 380 places, 560 transitions, 9700 flow. Second operand 8 states and 124 transitions. [2024-06-28 04:37:12,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 580 transitions, 11016 flow [2024-06-28 04:37:15,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 580 transitions, 10969 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 04:37:15,445 INFO L231 Difference]: Finished difference. Result has 381 places, 562 transitions, 9788 flow [2024-06-28 04:37:15,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9653, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9788, PETRI_PLACES=381, PETRI_TRANSITIONS=562} [2024-06-28 04:37:15,445 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 338 predicate places. [2024-06-28 04:37:15,446 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 562 transitions, 9788 flow [2024-06-28 04:37:15,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:15,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:15,446 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 04:37:15,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 04:37:15,446 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:37:15,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:15,447 INFO L85 PathProgramCache]: Analyzing trace with hash -245861898, now seen corresponding path program 2 times [2024-06-28 04:37:15,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:15,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404400617] [2024-06-28 04:37:15,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:15,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:19,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:19,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404400617] [2024-06-28 04:37:19,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404400617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:19,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:19,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:19,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333955170] [2024-06-28 04:37:19,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:19,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:19,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:19,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:19,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:19,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:37:19,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 562 transitions, 9788 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:19,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:19,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:37:19,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:21,885 INFO L124 PetriNetUnfolderBase]: 4556/7461 cut-off events. [2024-06-28 04:37:21,886 INFO L125 PetriNetUnfolderBase]: For 918136/918136 co-relation queries the response was YES. [2024-06-28 04:37:21,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82971 conditions, 7461 events. 4556/7461 cut-off events. For 918136/918136 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 50478 event pairs, 1675 based on Foata normal form. 2/7462 useless extension candidates. Maximal degree in co-relation 82792. Up to 7077 conditions per place. [2024-06-28 04:37:21,991 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 532 selfloop transitions, 55 changer transitions 0/592 dead transitions. [2024-06-28 04:37:21,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 592 transitions, 11626 flow [2024-06-28 04:37:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:37:21,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:37:21,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 04:37:21,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3862433862433862 [2024-06-28 04:37:21,992 INFO L175 Difference]: Start difference. First operand has 381 places, 562 transitions, 9788 flow. Second operand 9 states and 146 transitions. [2024-06-28 04:37:21,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 592 transitions, 11626 flow [2024-06-28 04:37:24,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 592 transitions, 11507 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 04:37:24,120 INFO L231 Difference]: Finished difference. Result has 385 places, 572 transitions, 10256 flow [2024-06-28 04:37:24,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9669, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10256, PETRI_PLACES=385, PETRI_TRANSITIONS=572} [2024-06-28 04:37:24,120 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 342 predicate places. [2024-06-28 04:37:24,121 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 572 transitions, 10256 flow [2024-06-28 04:37:24,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:24,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:24,121 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 04:37:24,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 04:37:24,121 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:37:24,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:24,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1892102192, now seen corresponding path program 3 times [2024-06-28 04:37:24,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:24,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818404002] [2024-06-28 04:37:24,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:24,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:26,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:26,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818404002] [2024-06-28 04:37:26,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818404002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:26,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:26,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:26,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440772858] [2024-06-28 04:37:26,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:26,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:26,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:26,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:26,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:26,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:37:26,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 572 transitions, 10256 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:26,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:26,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:37:26,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:29,529 INFO L124 PetriNetUnfolderBase]: 4551/7456 cut-off events. [2024-06-28 04:37:29,529 INFO L125 PetriNetUnfolderBase]: For 927790/927790 co-relation queries the response was YES. [2024-06-28 04:37:29,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83167 conditions, 7456 events. 4551/7456 cut-off events. For 927790/927790 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 50487 event pairs, 1671 based on Foata normal form. 2/7457 useless extension candidates. Maximal degree in co-relation 82986. Up to 7142 conditions per place. [2024-06-28 04:37:29,652 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 564 selfloop transitions, 18 changer transitions 0/587 dead transitions. [2024-06-28 04:37:29,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 587 transitions, 11522 flow [2024-06-28 04:37:29,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:37:29,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:37:29,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-28 04:37:29,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 04:37:29,653 INFO L175 Difference]: Start difference. First operand has 385 places, 572 transitions, 10256 flow. Second operand 8 states and 120 transitions. [2024-06-28 04:37:29,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 587 transitions, 11522 flow [2024-06-28 04:37:32,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 587 transitions, 11366 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-28 04:37:32,402 INFO L231 Difference]: Finished difference. Result has 387 places, 573 transitions, 10203 flow [2024-06-28 04:37:32,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10100, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10203, PETRI_PLACES=387, PETRI_TRANSITIONS=573} [2024-06-28 04:37:32,402 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 344 predicate places. [2024-06-28 04:37:32,402 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 573 transitions, 10203 flow [2024-06-28 04:37:32,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:32,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:32,403 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 04:37:32,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 04:37:32,403 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:37:32,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:32,403 INFO L85 PathProgramCache]: Analyzing trace with hash 793285750, now seen corresponding path program 4 times [2024-06-28 04:37:32,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:32,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896800728] [2024-06-28 04:37:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:32,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:35,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:35,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896800728] [2024-06-28 04:37:35,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896800728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:35,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:35,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:35,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896843901] [2024-06-28 04:37:35,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:35,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:35,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:35,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:35,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:35,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:37:35,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 573 transitions, 10203 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:35,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:35,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:37:35,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:38,001 INFO L124 PetriNetUnfolderBase]: 4546/7447 cut-off events. [2024-06-28 04:37:38,001 INFO L125 PetriNetUnfolderBase]: For 930685/930685 co-relation queries the response was YES. [2024-06-28 04:37:38,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82869 conditions, 7447 events. 4546/7447 cut-off events. For 930685/930685 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 50422 event pairs, 1679 based on Foata normal form. 2/7448 useless extension candidates. Maximal degree in co-relation 82687. Up to 7140 conditions per place. [2024-06-28 04:37:38,109 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 563 selfloop transitions, 18 changer transitions 0/586 dead transitions. [2024-06-28 04:37:38,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 586 transitions, 11405 flow [2024-06-28 04:37:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:37:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:37:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2024-06-28 04:37:38,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 04:37:38,110 INFO L175 Difference]: Start difference. First operand has 387 places, 573 transitions, 10203 flow. Second operand 8 states and 120 transitions. [2024-06-28 04:37:38,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 586 transitions, 11405 flow [2024-06-28 04:37:40,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 586 transitions, 11292 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 04:37:40,344 INFO L231 Difference]: Finished difference. Result has 389 places, 573 transitions, 10131 flow [2024-06-28 04:37:40,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10090, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10131, PETRI_PLACES=389, PETRI_TRANSITIONS=573} [2024-06-28 04:37:40,345 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 346 predicate places. [2024-06-28 04:37:40,345 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 573 transitions, 10131 flow [2024-06-28 04:37:40,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:40,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:40,345 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 04:37:40,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 04:37:40,345 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:37:40,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:40,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1891835282, now seen corresponding path program 5 times [2024-06-28 04:37:40,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:40,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449843907] [2024-06-28 04:37:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:40,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:42,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:42,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449843907] [2024-06-28 04:37:42,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449843907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:42,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:42,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:37:42,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917833104] [2024-06-28 04:37:42,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:42,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:37:42,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:42,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:37:42,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:37:42,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:37:42,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 573 transitions, 10131 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:42,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:42,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:37:42,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:45,557 INFO L124 PetriNetUnfolderBase]: 4541/7436 cut-off events. [2024-06-28 04:37:45,557 INFO L125 PetriNetUnfolderBase]: For 934342/934342 co-relation queries the response was YES. [2024-06-28 04:37:45,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82559 conditions, 7436 events. 4541/7436 cut-off events. For 934342/934342 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 50225 event pairs, 1678 based on Foata normal form. 2/7437 useless extension candidates. Maximal degree in co-relation 82376. Up to 7121 conditions per place. [2024-06-28 04:37:45,674 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 556 selfloop transitions, 25 changer transitions 0/586 dead transitions. [2024-06-28 04:37:45,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 586 transitions, 11333 flow [2024-06-28 04:37:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:37:45,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:37:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 04:37:45,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601190476190476 [2024-06-28 04:37:45,675 INFO L175 Difference]: Start difference. First operand has 389 places, 573 transitions, 10131 flow. Second operand 8 states and 121 transitions. [2024-06-28 04:37:45,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 586 transitions, 11333 flow [2024-06-28 04:37:48,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 586 transitions, 11225 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 04:37:48,128 INFO L231 Difference]: Finished difference. Result has 391 places, 573 transitions, 10081 flow [2024-06-28 04:37:48,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10023, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10081, PETRI_PLACES=391, PETRI_TRANSITIONS=573} [2024-06-28 04:37:48,129 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 348 predicate places. [2024-06-28 04:37:48,129 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 573 transitions, 10081 flow [2024-06-28 04:37:48,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:48,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:48,129 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 04:37:48,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 04:37:48,129 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:37:48,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:48,130 INFO L85 PathProgramCache]: Analyzing trace with hash 94228926, now seen corresponding path program 1 times [2024-06-28 04:37:48,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:48,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357148768] [2024-06-28 04:37:48,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:48,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:50,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:50,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357148768] [2024-06-28 04:37:50,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357148768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:50,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:50,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:37:50,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901492405] [2024-06-28 04:37:50,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:50,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:37:50,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:50,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:37:50,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:37:50,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:37:50,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 573 transitions, 10081 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:50,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:50,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:37:50,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:37:53,768 INFO L124 PetriNetUnfolderBase]: 4567/7469 cut-off events. [2024-06-28 04:37:53,768 INFO L125 PetriNetUnfolderBase]: For 952664/952664 co-relation queries the response was YES. [2024-06-28 04:37:53,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83222 conditions, 7469 events. 4567/7469 cut-off events. For 952664/952664 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 50359 event pairs, 1014 based on Foata normal form. 2/7471 useless extension candidates. Maximal degree in co-relation 83038. Up to 7001 conditions per place. [2024-06-28 04:37:53,883 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 560 selfloop transitions, 54 changer transitions 0/619 dead transitions. [2024-06-28 04:37:53,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 619 transitions, 11810 flow [2024-06-28 04:37:53,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:37:53,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:37:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 04:37:53,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 04:37:53,884 INFO L175 Difference]: Start difference. First operand has 391 places, 573 transitions, 10081 flow. Second operand 9 states and 165 transitions. [2024-06-28 04:37:53,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 619 transitions, 11810 flow [2024-06-28 04:37:56,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 619 transitions, 11683 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 04:37:56,325 INFO L231 Difference]: Finished difference. Result has 393 places, 580 transitions, 10271 flow [2024-06-28 04:37:56,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9956, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10271, PETRI_PLACES=393, PETRI_TRANSITIONS=580} [2024-06-28 04:37:56,326 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 350 predicate places. [2024-06-28 04:37:56,326 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 580 transitions, 10271 flow [2024-06-28 04:37:56,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:56,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:37:56,326 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 04:37:56,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 04:37:56,326 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:37:56,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:37:56,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1011338314, now seen corresponding path program 2 times [2024-06-28 04:37:56,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:37:56,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514177243] [2024-06-28 04:37:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:37:56,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:37:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:37:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:37:58,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:37:58,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514177243] [2024-06-28 04:37:58,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514177243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:37:58,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:37:58,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:37:58,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440536718] [2024-06-28 04:37:58,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:37:58,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:37:58,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:37:58,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:37:58,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:37:58,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:37:58,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 580 transitions, 10271 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:37:58,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:37:58,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:37:58,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:01,575 INFO L124 PetriNetUnfolderBase]: 4580/7488 cut-off events. [2024-06-28 04:38:01,575 INFO L125 PetriNetUnfolderBase]: For 952127/952127 co-relation queries the response was YES. [2024-06-28 04:38:01,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83556 conditions, 7488 events. 4580/7488 cut-off events. For 952127/952127 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 50367 event pairs, 1039 based on Foata normal form. 2/7490 useless extension candidates. Maximal degree in co-relation 83372. Up to 7092 conditions per place. [2024-06-28 04:38:01,700 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 560 selfloop transitions, 51 changer transitions 0/616 dead transitions. [2024-06-28 04:38:01,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 616 transitions, 11727 flow [2024-06-28 04:38:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:38:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:38:01,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 04:38:01,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-28 04:38:01,701 INFO L175 Difference]: Start difference. First operand has 393 places, 580 transitions, 10271 flow. Second operand 9 states and 157 transitions. [2024-06-28 04:38:01,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 616 transitions, 11727 flow [2024-06-28 04:38:04,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 616 transitions, 11582 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-06-28 04:38:04,713 INFO L231 Difference]: Finished difference. Result has 399 places, 585 transitions, 10373 flow [2024-06-28 04:38:04,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10154, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10373, PETRI_PLACES=399, PETRI_TRANSITIONS=585} [2024-06-28 04:38:04,714 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 356 predicate places. [2024-06-28 04:38:04,714 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 585 transitions, 10373 flow [2024-06-28 04:38:04,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:04,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:04,714 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 04:38:04,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 04:38:04,714 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:38:04,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash -206720390, now seen corresponding path program 3 times [2024-06-28 04:38:04,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:04,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443120208] [2024-06-28 04:38:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:04,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:07,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:07,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:07,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443120208] [2024-06-28 04:38:07,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443120208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:07,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:07,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:38:07,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564359880] [2024-06-28 04:38:07,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:07,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:38:07,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:07,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:38:07,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:38:07,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:38:07,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 585 transitions, 10373 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:07,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:07,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:38:07,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:10,151 INFO L124 PetriNetUnfolderBase]: 4575/7474 cut-off events. [2024-06-28 04:38:10,151 INFO L125 PetriNetUnfolderBase]: For 956274/956274 co-relation queries the response was YES. [2024-06-28 04:38:10,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83356 conditions, 7474 events. 4575/7474 cut-off events. For 956274/956274 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 50212 event pairs, 968 based on Foata normal form. 2/7475 useless extension candidates. Maximal degree in co-relation 83170. Up to 7085 conditions per place. [2024-06-28 04:38:10,269 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 554 selfloop transitions, 52 changer transitions 0/611 dead transitions. [2024-06-28 04:38:10,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 611 transitions, 11669 flow [2024-06-28 04:38:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:38:10,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:38:10,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 04:38:10,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-28 04:38:10,270 INFO L175 Difference]: Start difference. First operand has 399 places, 585 transitions, 10373 flow. Second operand 9 states and 150 transitions. [2024-06-28 04:38:10,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 611 transitions, 11669 flow [2024-06-28 04:38:12,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 611 transitions, 11504 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 04:38:12,992 INFO L231 Difference]: Finished difference. Result has 402 places, 585 transitions, 10317 flow [2024-06-28 04:38:12,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10208, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10317, PETRI_PLACES=402, PETRI_TRANSITIONS=585} [2024-06-28 04:38:12,993 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 359 predicate places. [2024-06-28 04:38:12,993 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 585 transitions, 10317 flow [2024-06-28 04:38:12,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:12,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:12,993 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 04:38:12,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 04:38:12,993 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:38:12,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:12,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1323801116, now seen corresponding path program 1 times [2024-06-28 04:38:12,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:12,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806788117] [2024-06-28 04:38:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:12,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:16,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:16,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806788117] [2024-06-28 04:38:16,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806788117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:16,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:16,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:38:16,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629556354] [2024-06-28 04:38:16,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:16,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:38:16,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:16,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:38:16,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:38:16,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:38:16,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 585 transitions, 10317 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:16,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:16,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:38:16,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:18,749 INFO L124 PetriNetUnfolderBase]: 4580/7494 cut-off events. [2024-06-28 04:38:18,749 INFO L125 PetriNetUnfolderBase]: For 965782/965782 co-relation queries the response was YES. [2024-06-28 04:38:18,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83565 conditions, 7494 events. 4580/7494 cut-off events. For 965782/965782 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 50533 event pairs, 1190 based on Foata normal form. 1/7495 useless extension candidates. Maximal degree in co-relation 83378. Up to 7130 conditions per place. [2024-06-28 04:38:18,864 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 577 selfloop transitions, 35 changer transitions 0/617 dead transitions. [2024-06-28 04:38:18,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 617 transitions, 11833 flow [2024-06-28 04:38:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:38:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:38:18,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 04:38:18,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3994708994708995 [2024-06-28 04:38:18,865 INFO L175 Difference]: Start difference. First operand has 402 places, 585 transitions, 10317 flow. Second operand 9 states and 151 transitions. [2024-06-28 04:38:18,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 617 transitions, 11833 flow [2024-06-28 04:38:21,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 617 transitions, 11700 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 04:38:21,571 INFO L231 Difference]: Finished difference. Result has 403 places, 588 transitions, 10456 flow [2024-06-28 04:38:21,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10184, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10456, PETRI_PLACES=403, PETRI_TRANSITIONS=588} [2024-06-28 04:38:21,571 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 360 predicate places. [2024-06-28 04:38:21,572 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 588 transitions, 10456 flow [2024-06-28 04:38:21,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:21,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:21,572 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 04:38:21,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 04:38:21,572 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:38:21,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:21,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1500879068, now seen corresponding path program 4 times [2024-06-28 04:38:21,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:21,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833742961] [2024-06-28 04:38:21,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:21,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:23,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:23,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833742961] [2024-06-28 04:38:23,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833742961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:23,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:23,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:38:23,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297638479] [2024-06-28 04:38:23,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:23,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:38:23,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:23,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:38:23,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:38:23,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:38:23,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 588 transitions, 10456 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:23,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:23,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:38:23,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:26,453 INFO L124 PetriNetUnfolderBase]: 4622/7557 cut-off events. [2024-06-28 04:38:26,453 INFO L125 PetriNetUnfolderBase]: For 1004438/1004438 co-relation queries the response was YES. [2024-06-28 04:38:26,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84799 conditions, 7557 events. 4622/7557 cut-off events. For 1004438/1004438 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 51050 event pairs, 1139 based on Foata normal form. 2/7559 useless extension candidates. Maximal degree in co-relation 84611. Up to 7070 conditions per place. [2024-06-28 04:38:26,577 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 569 selfloop transitions, 66 changer transitions 0/640 dead transitions. [2024-06-28 04:38:26,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 640 transitions, 12294 flow [2024-06-28 04:38:26,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:38:26,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:38:26,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 04:38:26,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 04:38:26,578 INFO L175 Difference]: Start difference. First operand has 403 places, 588 transitions, 10456 flow. Second operand 9 states and 165 transitions. [2024-06-28 04:38:26,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 640 transitions, 12294 flow [2024-06-28 04:38:29,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 640 transitions, 12052 flow, removed 92 selfloop flow, removed 6 redundant places. [2024-06-28 04:38:29,449 INFO L231 Difference]: Finished difference. Result has 407 places, 599 transitions, 10624 flow [2024-06-28 04:38:29,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10214, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10624, PETRI_PLACES=407, PETRI_TRANSITIONS=599} [2024-06-28 04:38:29,449 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 364 predicate places. [2024-06-28 04:38:29,449 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 599 transitions, 10624 flow [2024-06-28 04:38:29,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:29,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:29,450 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 04:38:29,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 04:38:29,450 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:38:29,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:29,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1160645446, now seen corresponding path program 5 times [2024-06-28 04:38:29,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:29,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676210659] [2024-06-28 04:38:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:29,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:32,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:32,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676210659] [2024-06-28 04:38:32,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676210659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:32,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:32,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:38:32,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136372021] [2024-06-28 04:38:32,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:32,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:38:32,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:32,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:38:32,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:38:32,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:38:32,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 599 transitions, 10624 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:32,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:32,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:38:32,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:34,877 INFO L124 PetriNetUnfolderBase]: 4617/7550 cut-off events. [2024-06-28 04:38:34,878 INFO L125 PetriNetUnfolderBase]: For 1006532/1006532 co-relation queries the response was YES. [2024-06-28 04:38:34,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84787 conditions, 7550 events. 4617/7550 cut-off events. For 1006532/1006532 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 50986 event pairs, 1168 based on Foata normal form. 2/7552 useless extension candidates. Maximal degree in co-relation 84597. Up to 7140 conditions per place. [2024-06-28 04:38:35,000 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 569 selfloop transitions, 58 changer transitions 0/632 dead transitions. [2024-06-28 04:38:35,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 632 transitions, 11990 flow [2024-06-28 04:38:35,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:38:35,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:38:35,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 04:38:35,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-28 04:38:35,002 INFO L175 Difference]: Start difference. First operand has 407 places, 599 transitions, 10624 flow. Second operand 9 states and 156 transitions. [2024-06-28 04:38:35,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 632 transitions, 11990 flow [2024-06-28 04:38:38,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 632 transitions, 11807 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-28 04:38:38,080 INFO L231 Difference]: Finished difference. Result has 411 places, 599 transitions, 10565 flow [2024-06-28 04:38:38,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10441, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10565, PETRI_PLACES=411, PETRI_TRANSITIONS=599} [2024-06-28 04:38:38,081 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 368 predicate places. [2024-06-28 04:38:38,081 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 599 transitions, 10565 flow [2024-06-28 04:38:38,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:38,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:38,081 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 04:38:38,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 04:38:38,081 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:38:38,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:38,082 INFO L85 PathProgramCache]: Analyzing trace with hash -545062300, now seen corresponding path program 6 times [2024-06-28 04:38:38,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:38,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919137544] [2024-06-28 04:38:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:38,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:39,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:39,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919137544] [2024-06-28 04:38:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919137544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:39,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:39,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:38:39,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146514232] [2024-06-28 04:38:39,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:39,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:38:39,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:39,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:38:39,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:38:39,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:38:39,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 599 transitions, 10565 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:39,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:39,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:38:39,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:42,634 INFO L124 PetriNetUnfolderBase]: 4641/7588 cut-off events. [2024-06-28 04:38:42,634 INFO L125 PetriNetUnfolderBase]: For 1018401/1018401 co-relation queries the response was YES. [2024-06-28 04:38:42,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85081 conditions, 7588 events. 4641/7588 cut-off events. For 1018401/1018401 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 50934 event pairs, 877 based on Foata normal form. 2/7590 useless extension candidates. Maximal degree in co-relation 84891. Up to 6947 conditions per place. [2024-06-28 04:38:42,763 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 559 selfloop transitions, 83 changer transitions 0/647 dead transitions. [2024-06-28 04:38:42,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 647 transitions, 12381 flow [2024-06-28 04:38:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:38:42,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:38:42,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 04:38:42,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:38:42,764 INFO L175 Difference]: Start difference. First operand has 411 places, 599 transitions, 10565 flow. Second operand 9 states and 162 transitions. [2024-06-28 04:38:42,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 647 transitions, 12381 flow [2024-06-28 04:38:45,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 647 transitions, 12250 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 04:38:45,780 INFO L231 Difference]: Finished difference. Result has 412 places, 607 transitions, 10815 flow [2024-06-28 04:38:45,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10434, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10815, PETRI_PLACES=412, PETRI_TRANSITIONS=607} [2024-06-28 04:38:45,781 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 369 predicate places. [2024-06-28 04:38:45,781 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 607 transitions, 10815 flow [2024-06-28 04:38:45,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:45,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:45,781 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 04:38:45,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 04:38:45,781 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:38:45,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:45,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1007846082, now seen corresponding path program 1 times [2024-06-28 04:38:45,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:45,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474527451] [2024-06-28 04:38:45,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:45,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:48,012 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 04:38:48,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:48,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474527451] [2024-06-28 04:38:48,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474527451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:48,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:48,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:38:48,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877931834] [2024-06-28 04:38:48,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:48,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:38:48,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:48,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:38:48,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:38:48,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:38:48,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 607 transitions, 10815 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:48,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:48,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:38:48,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:38:50,819 INFO L124 PetriNetUnfolderBase]: 4662/7610 cut-off events. [2024-06-28 04:38:50,820 INFO L125 PetriNetUnfolderBase]: For 1048240/1048240 co-relation queries the response was YES. [2024-06-28 04:38:50,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86202 conditions, 7610 events. 4662/7610 cut-off events. For 1048240/1048240 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 51348 event pairs, 1200 based on Foata normal form. 2/7612 useless extension candidates. Maximal degree in co-relation 86011. Up to 7192 conditions per place. [2024-06-28 04:38:50,945 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 595 selfloop transitions, 52 changer transitions 0/652 dead transitions. [2024-06-28 04:38:50,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 652 transitions, 12677 flow [2024-06-28 04:38:50,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:38:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:38:50,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 04:38:50,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-28 04:38:50,946 INFO L175 Difference]: Start difference. First operand has 412 places, 607 transitions, 10815 flow. Second operand 10 states and 176 transitions. [2024-06-28 04:38:50,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 652 transitions, 12677 flow [2024-06-28 04:38:54,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 652 transitions, 12508 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 04:38:54,198 INFO L231 Difference]: Finished difference. Result has 418 places, 612 transitions, 11004 flow [2024-06-28 04:38:54,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10654, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11004, PETRI_PLACES=418, PETRI_TRANSITIONS=612} [2024-06-28 04:38:54,198 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 375 predicate places. [2024-06-28 04:38:54,198 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 612 transitions, 11004 flow [2024-06-28 04:38:54,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:54,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:38:54,198 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 04:38:54,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 04:38:54,198 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:38:54,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:38:54,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1007906532, now seen corresponding path program 2 times [2024-06-28 04:38:54,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:38:54,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851932676] [2024-06-28 04:38:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:38:54,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:38:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:38:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:38:57,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:38:57,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851932676] [2024-06-28 04:38:57,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851932676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:38:57,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:38:57,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:38:57,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174798744] [2024-06-28 04:38:57,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:38:57,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:38:57,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:38:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:38:57,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:38:57,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:38:57,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 612 transitions, 11004 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:38:57,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:38:57,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:38:57,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:39:00,530 INFO L124 PetriNetUnfolderBase]: 4721/7692 cut-off events. [2024-06-28 04:39:00,530 INFO L125 PetriNetUnfolderBase]: For 1114855/1114855 co-relation queries the response was YES. [2024-06-28 04:39:00,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87741 conditions, 7692 events. 4721/7692 cut-off events. For 1114855/1114855 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 51790 event pairs, 986 based on Foata normal form. 13/7704 useless extension candidates. Maximal degree in co-relation 87547. Up to 7063 conditions per place. [2024-06-28 04:39:00,652 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 527 selfloop transitions, 131 changer transitions 0/663 dead transitions. [2024-06-28 04:39:00,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 663 transitions, 13029 flow [2024-06-28 04:39:00,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:39:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:39:00,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 04:39:00,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430952380952381 [2024-06-28 04:39:00,653 INFO L175 Difference]: Start difference. First operand has 418 places, 612 transitions, 11004 flow. Second operand 10 states and 181 transitions. [2024-06-28 04:39:00,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 663 transitions, 13029 flow [2024-06-28 04:39:03,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 663 transitions, 12817 flow, removed 89 selfloop flow, removed 4 redundant places. [2024-06-28 04:39:03,694 INFO L231 Difference]: Finished difference. Result has 426 places, 625 transitions, 11625 flow [2024-06-28 04:39:03,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10832, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11625, PETRI_PLACES=426, PETRI_TRANSITIONS=625} [2024-06-28 04:39:03,695 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 383 predicate places. [2024-06-28 04:39:03,695 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 625 transitions, 11625 flow [2024-06-28 04:39:03,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:39:03,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:39:03,695 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, 1] [2024-06-28 04:39:03,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 04:39:03,695 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:39:03,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:39:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2140898294, now seen corresponding path program 1 times [2024-06-28 04:39:03,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:39:03,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635936657] [2024-06-28 04:39:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:39:03,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:39:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:39:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:39:06,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:39:06,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635936657] [2024-06-28 04:39:06,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635936657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:39:06,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:39:06,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:39:06,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839690817] [2024-06-28 04:39:06,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:39:06,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:39:06,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:39:06,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:39:06,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:39:06,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:39:06,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 625 transitions, 11625 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:39:06,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:39:06,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:39:06,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:39:09,741 INFO L124 PetriNetUnfolderBase]: 4803/7800 cut-off events. [2024-06-28 04:39:09,741 INFO L125 PetriNetUnfolderBase]: For 1170232/1170232 co-relation queries the response was YES. [2024-06-28 04:39:09,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91389 conditions, 7800 events. 4803/7800 cut-off events. For 1170232/1170232 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 52450 event pairs, 986 based on Foata normal form. 6/7805 useless extension candidates. Maximal degree in co-relation 91191. Up to 7085 conditions per place. [2024-06-28 04:39:09,864 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 532 selfloop transitions, 144 changer transitions 0/681 dead transitions. [2024-06-28 04:39:09,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 681 transitions, 14095 flow [2024-06-28 04:39:09,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:39:09,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:39:09,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 04:39:09,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2024-06-28 04:39:09,866 INFO L175 Difference]: Start difference. First operand has 426 places, 625 transitions, 11625 flow. Second operand 10 states and 187 transitions. [2024-06-28 04:39:09,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 681 transitions, 14095 flow [2024-06-28 04:39:13,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 681 transitions, 13823 flow, removed 90 selfloop flow, removed 5 redundant places. [2024-06-28 04:39:13,197 INFO L231 Difference]: Finished difference. Result has 432 places, 638 transitions, 12260 flow [2024-06-28 04:39:13,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11353, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12260, PETRI_PLACES=432, PETRI_TRANSITIONS=638} [2024-06-28 04:39:13,197 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 389 predicate places. [2024-06-28 04:39:13,197 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 638 transitions, 12260 flow [2024-06-28 04:39:13,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:39:13,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:39:13,198 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 04:39:13,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 04:39:13,198 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:39:13,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:39:13,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2143694804, now seen corresponding path program 2 times [2024-06-28 04:39:13,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:39:13,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502688163] [2024-06-28 04:39:13,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:39:13,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:39:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:39:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:39:16,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:39:16,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502688163] [2024-06-28 04:39:16,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502688163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:39:16,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:39:16,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:39:16,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694183929] [2024-06-28 04:39:16,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:39:16,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:39:16,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:39:16,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:39:16,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:39:16,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:39:16,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 638 transitions, 12260 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:39:16,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:39:16,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:39:16,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:39:19,535 INFO L124 PetriNetUnfolderBase]: 4823/7847 cut-off events. [2024-06-28 04:39:19,535 INFO L125 PetriNetUnfolderBase]: For 1201792/1201792 co-relation queries the response was YES. [2024-06-28 04:39:19,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93511 conditions, 7847 events. 4823/7847 cut-off events. For 1201792/1201792 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 52908 event pairs, 1211 based on Foata normal form. 4/7851 useless extension candidates. Maximal degree in co-relation 93310. Up to 7448 conditions per place. [2024-06-28 04:39:19,660 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 626 selfloop transitions, 44 changer transitions 0/675 dead transitions. [2024-06-28 04:39:19,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 675 transitions, 13968 flow [2024-06-28 04:39:19,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:39:19,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:39:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 04:39:19,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-28 04:39:19,661 INFO L175 Difference]: Start difference. First operand has 432 places, 638 transitions, 12260 flow. Second operand 11 states and 180 transitions. [2024-06-28 04:39:19,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 675 transitions, 13968 flow [2024-06-28 04:39:23,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 675 transitions, 13536 flow, removed 146 selfloop flow, removed 6 redundant places. [2024-06-28 04:39:23,355 INFO L231 Difference]: Finished difference. Result has 437 places, 642 transitions, 12166 flow [2024-06-28 04:39:23,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11828, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12166, PETRI_PLACES=437, PETRI_TRANSITIONS=642} [2024-06-28 04:39:23,355 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 394 predicate places. [2024-06-28 04:39:23,355 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 642 transitions, 12166 flow [2024-06-28 04:39:23,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:39:23,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:39:23,355 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 04:39:23,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 04:39:23,356 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:39:23,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:39:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1323808060, now seen corresponding path program 3 times [2024-06-28 04:39:23,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:39:23,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671361279] [2024-06-28 04:39:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:39:23,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:39:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:39:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:39:27,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:39:27,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671361279] [2024-06-28 04:39:27,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671361279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:39:27,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:39:27,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:39:27,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242628963] [2024-06-28 04:39:27,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:39:27,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:39:27,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:39:27,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:39:27,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:39:27,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:39:27,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 642 transitions, 12166 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:39:27,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:39:27,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:39:27,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:39:29,949 INFO L124 PetriNetUnfolderBase]: 4867/7919 cut-off events. [2024-06-28 04:39:29,949 INFO L125 PetriNetUnfolderBase]: For 1268397/1268397 co-relation queries the response was YES. [2024-06-28 04:39:30,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94840 conditions, 7919 events. 4867/7919 cut-off events. For 1268397/1268397 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 53450 event pairs, 1221 based on Foata normal form. 10/7929 useless extension candidates. Maximal degree in co-relation 94637. Up to 7500 conditions per place. [2024-06-28 04:39:30,080 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 636 selfloop transitions, 39 changer transitions 0/680 dead transitions. [2024-06-28 04:39:30,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 680 transitions, 13962 flow [2024-06-28 04:39:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:39:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:39:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 04:39:30,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:39:30,081 INFO L175 Difference]: Start difference. First operand has 437 places, 642 transitions, 12166 flow. Second operand 10 states and 168 transitions. [2024-06-28 04:39:30,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 680 transitions, 13962 flow [2024-06-28 04:39:33,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 680 transitions, 13673 flow, removed 106 selfloop flow, removed 8 redundant places. [2024-06-28 04:39:33,945 INFO L231 Difference]: Finished difference. Result has 439 places, 645 transitions, 12122 flow [2024-06-28 04:39:33,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11877, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12122, PETRI_PLACES=439, PETRI_TRANSITIONS=645} [2024-06-28 04:39:33,945 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 396 predicate places. [2024-06-28 04:39:33,946 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 645 transitions, 12122 flow [2024-06-28 04:39:33,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:39:33,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:39:33,946 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 04:39:33,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 04:39:33,946 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:39:33,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:39:33,947 INFO L85 PathProgramCache]: Analyzing trace with hash 665143462, now seen corresponding path program 3 times [2024-06-28 04:39:33,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:39:33,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215632355] [2024-06-28 04:39:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:39:33,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:39:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:39:37,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:39:37,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:39:37,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215632355] [2024-06-28 04:39:37,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215632355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:39:37,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:39:37,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:39:37,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556947357] [2024-06-28 04:39:37,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:39:37,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:39:37,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:39:37,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:39:37,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:39:37,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:39:37,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 645 transitions, 12122 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:39:37,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:39:37,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:39:37,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:39:40,278 INFO L124 PetriNetUnfolderBase]: 4897/7942 cut-off events. [2024-06-28 04:39:40,278 INFO L125 PetriNetUnfolderBase]: For 1270099/1270099 co-relation queries the response was YES. [2024-06-28 04:39:40,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95565 conditions, 7942 events. 4897/7942 cut-off events. For 1270099/1270099 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 53426 event pairs, 991 based on Foata normal form. 6/7947 useless extension candidates. Maximal degree in co-relation 95361. Up to 7430 conditions per place. [2024-06-28 04:39:40,410 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 589 selfloop transitions, 92 changer transitions 0/686 dead transitions. [2024-06-28 04:39:40,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 686 transitions, 14270 flow [2024-06-28 04:39:40,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:39:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:39:40,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 04:39:40,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-28 04:39:40,411 INFO L175 Difference]: Start difference. First operand has 439 places, 645 transitions, 12122 flow. Second operand 10 states and 172 transitions. [2024-06-28 04:39:40,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 686 transitions, 14270 flow [2024-06-28 04:39:44,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 686 transitions, 14172 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 04:39:44,149 INFO L231 Difference]: Finished difference. Result has 442 places, 653 transitions, 12680 flow [2024-06-28 04:39:44,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12024, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12680, PETRI_PLACES=442, PETRI_TRANSITIONS=653} [2024-06-28 04:39:44,149 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 399 predicate places. [2024-06-28 04:39:44,149 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 653 transitions, 12680 flow [2024-06-28 04:39:44,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:39:44,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:39:44,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:39:44,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 04:39:44,150 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:39:44,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:39:44,150 INFO L85 PathProgramCache]: Analyzing trace with hash 658714372, now seen corresponding path program 4 times [2024-06-28 04:39:44,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:39:44,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533879852] [2024-06-28 04:39:44,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:39:44,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:39:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:39:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:39:47,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:39:47,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533879852] [2024-06-28 04:39:47,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533879852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:39:47,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:39:47,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:39:47,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932868280] [2024-06-28 04:39:47,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:39:47,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:39:47,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:39:47,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:39:47,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:39:47,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:39:47,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 653 transitions, 12680 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:39:47,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:39:47,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:39:47,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:39:50,190 INFO L124 PetriNetUnfolderBase]: 4917/7964 cut-off events. [2024-06-28 04:39:50,191 INFO L125 PetriNetUnfolderBase]: For 1299288/1299288 co-relation queries the response was YES. [2024-06-28 04:39:50,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97157 conditions, 7964 events. 4917/7964 cut-off events. For 1299288/1299288 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 53466 event pairs, 989 based on Foata normal form. 4/7967 useless extension candidates. Maximal degree in co-relation 96952. Up to 7430 conditions per place. [2024-06-28 04:39:50,321 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 593 selfloop transitions, 96 changer transitions 0/694 dead transitions. [2024-06-28 04:39:50,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 694 transitions, 14738 flow [2024-06-28 04:39:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:39:50,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:39:50,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 04:39:50,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:39:50,327 INFO L175 Difference]: Start difference. First operand has 442 places, 653 transitions, 12680 flow. Second operand 10 states and 175 transitions. [2024-06-28 04:39:50,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 694 transitions, 14738 flow [2024-06-28 04:39:54,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 694 transitions, 14188 flow, removed 189 selfloop flow, removed 8 redundant places. [2024-06-28 04:39:54,311 INFO L231 Difference]: Finished difference. Result has 444 places, 657 transitions, 12544 flow [2024-06-28 04:39:54,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12130, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12544, PETRI_PLACES=444, PETRI_TRANSITIONS=657} [2024-06-28 04:39:54,311 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 401 predicate places. [2024-06-28 04:39:54,311 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 657 transitions, 12544 flow [2024-06-28 04:39:54,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:39:54,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:39:54,311 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 04:39:54,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 04:39:54,311 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:39:54,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:39:54,312 INFO L85 PathProgramCache]: Analyzing trace with hash 658709598, now seen corresponding path program 4 times [2024-06-28 04:39:54,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:39:54,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869614806] [2024-06-28 04:39:54,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:39:54,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:39:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:39:56,926 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 04:39:56,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:39:56,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869614806] [2024-06-28 04:39:56,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869614806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:39:56,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:39:56,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:39:56,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102073460] [2024-06-28 04:39:56,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:39:56,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:39:56,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:39:56,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:39:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:39:56,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:39:56,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 657 transitions, 12544 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:39:56,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:39:56,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:39:56,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:39:59,926 INFO L124 PetriNetUnfolderBase]: 4940/8011 cut-off events. [2024-06-28 04:39:59,926 INFO L125 PetriNetUnfolderBase]: For 1334860/1334860 co-relation queries the response was YES. [2024-06-28 04:40:00,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97145 conditions, 8011 events. 4940/8011 cut-off events. For 1334860/1334860 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 53904 event pairs, 994 based on Foata normal form. 10/8020 useless extension candidates. Maximal degree in co-relation 96939. Up to 7569 conditions per place. [2024-06-28 04:40:00,071 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 616 selfloop transitions, 67 changer transitions 0/688 dead transitions. [2024-06-28 04:40:00,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 688 transitions, 14194 flow [2024-06-28 04:40:00,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:40:00,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:40:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 04:40:00,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976190476190476 [2024-06-28 04:40:00,073 INFO L175 Difference]: Start difference. First operand has 444 places, 657 transitions, 12544 flow. Second operand 10 states and 167 transitions. [2024-06-28 04:40:00,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 688 transitions, 14194 flow [2024-06-28 04:40:03,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 688 transitions, 13718 flow, removed 145 selfloop flow, removed 8 redundant places. [2024-06-28 04:40:03,911 INFO L231 Difference]: Finished difference. Result has 446 places, 658 transitions, 12264 flow [2024-06-28 04:40:03,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12068, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12264, PETRI_PLACES=446, PETRI_TRANSITIONS=658} [2024-06-28 04:40:03,912 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 403 predicate places. [2024-06-28 04:40:03,912 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 658 transitions, 12264 flow [2024-06-28 04:40:03,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:40:03,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:40:03,912 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 04:40:03,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 04:40:03,913 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:40:03,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:40:03,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1291633470, now seen corresponding path program 5 times [2024-06-28 04:40:03,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:40:03,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102700241] [2024-06-28 04:40:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:40:03,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:40:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:40:06,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:40:06,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:40:06,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102700241] [2024-06-28 04:40:06,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102700241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:40:06,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:40:06,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:40:06,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081671892] [2024-06-28 04:40:06,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:40:06,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:40:06,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:40:06,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:40:06,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:40:06,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:40:06,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 658 transitions, 12264 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:40:06,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:40:06,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:40:06,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:40:09,778 INFO L124 PetriNetUnfolderBase]: 4928/7987 cut-off events. [2024-06-28 04:40:09,778 INFO L125 PetriNetUnfolderBase]: For 1288388/1288388 co-relation queries the response was YES. [2024-06-28 04:40:09,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95851 conditions, 7987 events. 4928/7987 cut-off events. For 1288388/1288388 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 53671 event pairs, 993 based on Foata normal form. 4/7990 useless extension candidates. Maximal degree in co-relation 95644. Up to 7456 conditions per place. [2024-06-28 04:40:09,916 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 594 selfloop transitions, 98 changer transitions 0/697 dead transitions. [2024-06-28 04:40:09,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 697 transitions, 14138 flow [2024-06-28 04:40:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:40:09,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:40:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 04:40:09,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:40:09,917 INFO L175 Difference]: Start difference. First operand has 446 places, 658 transitions, 12264 flow. Second operand 11 states and 187 transitions. [2024-06-28 04:40:09,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 697 transitions, 14138 flow [2024-06-28 04:40:14,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 697 transitions, 13885 flow, removed 72 selfloop flow, removed 6 redundant places. [2024-06-28 04:40:14,065 INFO L231 Difference]: Finished difference. Result has 451 places, 658 transitions, 12222 flow [2024-06-28 04:40:14,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12011, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12222, PETRI_PLACES=451, PETRI_TRANSITIONS=658} [2024-06-28 04:40:14,065 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 408 predicate places. [2024-06-28 04:40:14,065 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 658 transitions, 12222 flow [2024-06-28 04:40:14,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:40:14,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:40:14,066 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 04:40:14,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 04:40:14,066 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:40:14,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:40:14,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1714131522, now seen corresponding path program 7 times [2024-06-28 04:40:14,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:40:14,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366947877] [2024-06-28 04:40:14,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:40:14,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:40:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:40:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:40:16,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:40:16,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366947877] [2024-06-28 04:40:16,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366947877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:40:16,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:40:16,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:40:16,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095930726] [2024-06-28 04:40:16,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:40:16,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:40:16,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:40:16,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:40:16,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:40:16,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:40:16,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 658 transitions, 12222 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:40:16,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:40:16,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:40:16,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:40:19,796 INFO L124 PetriNetUnfolderBase]: 4936/8021 cut-off events. [2024-06-28 04:40:19,796 INFO L125 PetriNetUnfolderBase]: For 1286931/1286931 co-relation queries the response was YES. [2024-06-28 04:40:19,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95891 conditions, 8021 events. 4936/8021 cut-off events. For 1286931/1286931 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 53688 event pairs, 897 based on Foata normal form. 2/8023 useless extension candidates. Maximal degree in co-relation 95683. Up to 7376 conditions per place. [2024-06-28 04:40:19,932 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 601 selfloop transitions, 87 changer transitions 0/693 dead transitions. [2024-06-28 04:40:19,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 693 transitions, 13994 flow [2024-06-28 04:40:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:40:19,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:40:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 04:40:19,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:40:19,935 INFO L175 Difference]: Start difference. First operand has 451 places, 658 transitions, 12222 flow. Second operand 8 states and 144 transitions. [2024-06-28 04:40:19,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 693 transitions, 13994 flow [2024-06-28 04:40:23,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 693 transitions, 13729 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 04:40:23,633 INFO L231 Difference]: Finished difference. Result has 450 places, 660 transitions, 12216 flow [2024-06-28 04:40:23,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11959, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12216, PETRI_PLACES=450, PETRI_TRANSITIONS=660} [2024-06-28 04:40:23,634 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 407 predicate places. [2024-06-28 04:40:23,634 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 660 transitions, 12216 flow [2024-06-28 04:40:23,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:40:23,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:40:23,634 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 04:40:23,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 04:40:23,634 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:40:23,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:40:23,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1028204910, now seen corresponding path program 8 times [2024-06-28 04:40:23,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:40:23,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605217791] [2024-06-28 04:40:23,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:40:23,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:40:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:40:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:40:26,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:40:26,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605217791] [2024-06-28 04:40:26,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605217791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:40:26,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:40:26,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:40:26,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685059601] [2024-06-28 04:40:26,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:40:26,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:40:26,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:40:26,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:40:26,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:40:26,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:40:26,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 660 transitions, 12216 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:40:26,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:40:26,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:40:26,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:40:29,534 INFO L124 PetriNetUnfolderBase]: 4949/8040 cut-off events. [2024-06-28 04:40:29,534 INFO L125 PetriNetUnfolderBase]: For 1286842/1286842 co-relation queries the response was YES. [2024-06-28 04:40:29,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96088 conditions, 8040 events. 4949/8040 cut-off events. For 1286842/1286842 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 54341 event pairs, 1190 based on Foata normal form. 2/8042 useless extension candidates. Maximal degree in co-relation 95879. Up to 7615 conditions per place. [2024-06-28 04:40:29,665 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 623 selfloop transitions, 64 changer transitions 0/692 dead transitions. [2024-06-28 04:40:29,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 692 transitions, 13824 flow [2024-06-28 04:40:29,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:40:29,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:40:29,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 04:40:29,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 04:40:29,666 INFO L175 Difference]: Start difference. First operand has 450 places, 660 transitions, 12216 flow. Second operand 8 states and 138 transitions. [2024-06-28 04:40:29,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 692 transitions, 13824 flow [2024-06-28 04:40:33,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 692 transitions, 13636 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 04:40:33,177 INFO L231 Difference]: Finished difference. Result has 451 places, 665 transitions, 12312 flow [2024-06-28 04:40:33,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12035, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12312, PETRI_PLACES=451, PETRI_TRANSITIONS=665} [2024-06-28 04:40:33,177 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 408 predicate places. [2024-06-28 04:40:33,177 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 665 transitions, 12312 flow [2024-06-28 04:40:33,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:40:33,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:40:33,178 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 04:40:33,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 04:40:33,178 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:40:33,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:40:33,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2011356606, now seen corresponding path program 9 times [2024-06-28 04:40:33,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:40:33,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695847346] [2024-06-28 04:40:33,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:40:33,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:40:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:40:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:40:36,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:40:36,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695847346] [2024-06-28 04:40:36,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695847346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:40:36,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:40:36,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:40:36,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551886708] [2024-06-28 04:40:36,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:40:36,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:40:36,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:40:36,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:40:36,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:40:36,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:40:36,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 665 transitions, 12312 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:40:36,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:40:36,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:40:36,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:40:39,626 INFO L124 PetriNetUnfolderBase]: 5003/8115 cut-off events. [2024-06-28 04:40:39,627 INFO L125 PetriNetUnfolderBase]: For 1261415/1261415 co-relation queries the response was YES. [2024-06-28 04:40:39,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96634 conditions, 8115 events. 5003/8115 cut-off events. For 1261415/1261415 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 54631 event pairs, 1010 based on Foata normal form. 2/8115 useless extension candidates. Maximal degree in co-relation 96426. Up to 7689 conditions per place. [2024-06-28 04:40:39,760 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 627 selfloop transitions, 75 changer transitions 0/707 dead transitions. [2024-06-28 04:40:39,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 707 transitions, 14357 flow [2024-06-28 04:40:39,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:40:39,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:40:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 04:40:39,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2024-06-28 04:40:39,761 INFO L175 Difference]: Start difference. First operand has 451 places, 665 transitions, 12312 flow. Second operand 9 states and 142 transitions. [2024-06-28 04:40:39,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 707 transitions, 14357 flow [2024-06-28 04:40:43,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 707 transitions, 14210 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 04:40:43,504 INFO L231 Difference]: Finished difference. Result has 456 places, 689 transitions, 12966 flow [2024-06-28 04:40:43,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12185, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12966, PETRI_PLACES=456, PETRI_TRANSITIONS=689} [2024-06-28 04:40:43,505 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 413 predicate places. [2024-06-28 04:40:43,505 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 689 transitions, 12966 flow [2024-06-28 04:40:43,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:40:43,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:40:43,505 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 04:40:43,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 04:40:43,506 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:40:43,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:40:43,506 INFO L85 PathProgramCache]: Analyzing trace with hash -742510030, now seen corresponding path program 2 times [2024-06-28 04:40:43,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:40:43,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611862760] [2024-06-28 04:40:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:40:43,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:40:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:40:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:40:46,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:40:46,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611862760] [2024-06-28 04:40:46,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611862760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:40:46,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:40:46,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:40:46,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368282880] [2024-06-28 04:40:46,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:40:46,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:40:46,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:40:46,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:40:46,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:40:46,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:40:46,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 689 transitions, 12966 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:40:46,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:40:46,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:40:46,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:40:49,709 INFO L124 PetriNetUnfolderBase]: 5008/8137 cut-off events. [2024-06-28 04:40:49,709 INFO L125 PetriNetUnfolderBase]: For 1247403/1247403 co-relation queries the response was YES. [2024-06-28 04:40:49,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96782 conditions, 8137 events. 5008/8137 cut-off events. For 1247403/1247403 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 55076 event pairs, 1226 based on Foata normal form. 1/8138 useless extension candidates. Maximal degree in co-relation 96573. Up to 7727 conditions per place. [2024-06-28 04:40:49,842 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 665 selfloop transitions, 45 changer transitions 0/715 dead transitions. [2024-06-28 04:40:49,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 715 transitions, 14688 flow [2024-06-28 04:40:49,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:40:49,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:40:49,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 04:40:49,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 04:40:49,843 INFO L175 Difference]: Start difference. First operand has 456 places, 689 transitions, 12966 flow. Second operand 8 states and 133 transitions. [2024-06-28 04:40:49,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 715 transitions, 14688 flow [2024-06-28 04:40:53,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 715 transitions, 14536 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 04:40:53,298 INFO L231 Difference]: Finished difference. Result has 461 places, 692 transitions, 13136 flow [2024-06-28 04:40:53,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12814, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13136, PETRI_PLACES=461, PETRI_TRANSITIONS=692} [2024-06-28 04:40:53,299 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 418 predicate places. [2024-06-28 04:40:53,299 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 692 transitions, 13136 flow [2024-06-28 04:40:53,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:40:53,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:40:53,299 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 04:40:53,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 04:40:53,299 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:40:53,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:40:53,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1135115346, now seen corresponding path program 10 times [2024-06-28 04:40:53,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:40:53,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141670494] [2024-06-28 04:40:53,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:40:53,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:40:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:40:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:40:56,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:40:56,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141670494] [2024-06-28 04:40:56,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141670494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:40:56,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:40:56,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:40:56,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101575705] [2024-06-28 04:40:56,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:40:56,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:40:56,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:40:56,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:40:56,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:40:56,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:40:56,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 692 transitions, 13136 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:40:56,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:40:56,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:40:56,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:40:59,310 INFO L124 PetriNetUnfolderBase]: 5003/8113 cut-off events. [2024-06-28 04:40:59,310 INFO L125 PetriNetUnfolderBase]: For 1267010/1267010 co-relation queries the response was YES. [2024-06-28 04:40:59,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96885 conditions, 8113 events. 5003/8113 cut-off events. For 1267010/1267010 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 54632 event pairs, 1017 based on Foata normal form. 2/8112 useless extension candidates. Maximal degree in co-relation 96674. Up to 7695 conditions per place. [2024-06-28 04:40:59,442 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 627 selfloop transitions, 73 changer transitions 0/705 dead transitions. [2024-06-28 04:40:59,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 705 transitions, 14576 flow [2024-06-28 04:40:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:40:59,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:40:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 04:40:59,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-28 04:40:59,443 INFO L175 Difference]: Start difference. First operand has 461 places, 692 transitions, 13136 flow. Second operand 8 states and 123 transitions. [2024-06-28 04:40:59,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 705 transitions, 14576 flow [2024-06-28 04:41:03,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 705 transitions, 14254 flow, removed 120 selfloop flow, removed 6 redundant places. [2024-06-28 04:41:03,077 INFO L231 Difference]: Finished difference. Result has 463 places, 692 transitions, 12965 flow [2024-06-28 04:41:03,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12814, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12965, PETRI_PLACES=463, PETRI_TRANSITIONS=692} [2024-06-28 04:41:03,077 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 420 predicate places. [2024-06-28 04:41:03,077 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 692 transitions, 12965 flow [2024-06-28 04:41:03,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:41:03,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:41:03,077 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 04:41:03,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 04:41:03,077 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:41:03,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:41:03,078 INFO L85 PathProgramCache]: Analyzing trace with hash -563026462, now seen corresponding path program 3 times [2024-06-28 04:41:03,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:41:03,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914111942] [2024-06-28 04:41:03,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:41:03,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:41:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:41:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:41:06,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:41:06,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914111942] [2024-06-28 04:41:06,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914111942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:41:06,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:41:06,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:41:06,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777935425] [2024-06-28 04:41:06,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:41:06,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:41:06,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:41:06,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:41:06,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:41:06,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:41:06,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 692 transitions, 12965 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:41:06,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:41:06,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:41:06,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:41:09,268 INFO L124 PetriNetUnfolderBase]: 5008/8140 cut-off events. [2024-06-28 04:41:09,268 INFO L125 PetriNetUnfolderBase]: For 1275738/1275738 co-relation queries the response was YES. [2024-06-28 04:41:09,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97043 conditions, 8140 events. 5008/8140 cut-off events. For 1275738/1275738 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 55105 event pairs, 1232 based on Foata normal form. 1/8140 useless extension candidates. Maximal degree in co-relation 96831. Up to 7707 conditions per place. [2024-06-28 04:41:09,402 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 666 selfloop transitions, 44 changer transitions 0/715 dead transitions. [2024-06-28 04:41:09,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 715 transitions, 14685 flow [2024-06-28 04:41:09,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:41:09,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:41:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 04:41:09,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 04:41:09,403 INFO L175 Difference]: Start difference. First operand has 463 places, 692 transitions, 12965 flow. Second operand 8 states and 132 transitions. [2024-06-28 04:41:09,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 715 transitions, 14685 flow [2024-06-28 04:41:13,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 715 transitions, 14436 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 04:41:13,258 INFO L231 Difference]: Finished difference. Result has 464 places, 695 transitions, 13038 flow [2024-06-28 04:41:13,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12716, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13038, PETRI_PLACES=464, PETRI_TRANSITIONS=695} [2024-06-28 04:41:13,258 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 421 predicate places. [2024-06-28 04:41:13,258 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 695 transitions, 13038 flow [2024-06-28 04:41:13,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:41:13,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:41:13,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:41:13,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 04:41:13,259 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:41:13,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:41:13,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1814645038, now seen corresponding path program 4 times [2024-06-28 04:41:13,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:41:13,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424147765] [2024-06-28 04:41:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:41:13,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:41:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:41:17,097 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 04:41:17,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:41:17,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424147765] [2024-06-28 04:41:17,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424147765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:41:17,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:41:17,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:41:17,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029015675] [2024-06-28 04:41:17,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:41:17,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:41:17,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:41:17,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:41:17,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:41:17,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:41:17,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 695 transitions, 13038 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:41:17,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:41:17,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:41:17,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:41:20,062 INFO L124 PetriNetUnfolderBase]: 5005/8136 cut-off events. [2024-06-28 04:41:20,062 INFO L125 PetriNetUnfolderBase]: For 1293716/1293716 co-relation queries the response was YES. [2024-06-28 04:41:20,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97191 conditions, 8136 events. 5005/8136 cut-off events. For 1293716/1293716 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 55128 event pairs, 1232 based on Foata normal form. 1/8136 useless extension candidates. Maximal degree in co-relation 96978. Up to 7672 conditions per place. [2024-06-28 04:41:20,205 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 646 selfloop transitions, 63 changer transitions 0/714 dead transitions. [2024-06-28 04:41:20,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 714 transitions, 14742 flow [2024-06-28 04:41:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:41:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:41:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 04:41:20,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:41:20,206 INFO L175 Difference]: Start difference. First operand has 464 places, 695 transitions, 13038 flow. Second operand 8 states and 128 transitions. [2024-06-28 04:41:20,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 714 transitions, 14742 flow [2024-06-28 04:41:23,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 714 transitions, 14442 flow, removed 108 selfloop flow, removed 6 redundant places. [2024-06-28 04:41:23,978 INFO L231 Difference]: Finished difference. Result has 466 places, 698 transitions, 13104 flow [2024-06-28 04:41:23,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12738, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13104, PETRI_PLACES=466, PETRI_TRANSITIONS=698} [2024-06-28 04:41:23,979 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 423 predicate places. [2024-06-28 04:41:23,979 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 698 transitions, 13104 flow [2024-06-28 04:41:23,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:41:23,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:41:23,979 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 04:41:23,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 04:41:23,979 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:41:23,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:41:23,980 INFO L85 PathProgramCache]: Analyzing trace with hash -223287130, now seen corresponding path program 5 times [2024-06-28 04:41:23,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:41:23,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91884617] [2024-06-28 04:41:23,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:41:23,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:41:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:41:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:41:26,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:41:26,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91884617] [2024-06-28 04:41:26,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91884617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:41:26,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:41:26,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:41:26,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585071884] [2024-06-28 04:41:26,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:41:26,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:41:26,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:41:26,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:41:26,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:41:26,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:41:26,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 698 transitions, 13104 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:41:26,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:41:26,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:41:26,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:41:29,592 INFO L124 PetriNetUnfolderBase]: 5026/8154 cut-off events. [2024-06-28 04:41:29,592 INFO L125 PetriNetUnfolderBase]: For 1340865/1340865 co-relation queries the response was YES. [2024-06-28 04:41:29,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98411 conditions, 8154 events. 5026/8154 cut-off events. For 1340865/1340865 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 55160 event pairs, 1211 based on Foata normal form. 2/8156 useless extension candidates. Maximal degree in co-relation 98197. Up to 7641 conditions per place. [2024-06-28 04:41:29,730 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 651 selfloop transitions, 82 changer transitions 0/738 dead transitions. [2024-06-28 04:41:29,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 738 transitions, 15201 flow [2024-06-28 04:41:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:41:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:41:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 04:41:29,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2024-06-28 04:41:29,732 INFO L175 Difference]: Start difference. First operand has 466 places, 698 transitions, 13104 flow. Second operand 9 states and 157 transitions. [2024-06-28 04:41:29,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 738 transitions, 15201 flow [2024-06-28 04:41:33,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 738 transitions, 14857 flow, removed 111 selfloop flow, removed 6 redundant places. [2024-06-28 04:41:33,928 INFO L231 Difference]: Finished difference. Result has 470 places, 703 transitions, 13236 flow [2024-06-28 04:41:33,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12760, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13236, PETRI_PLACES=470, PETRI_TRANSITIONS=703} [2024-06-28 04:41:33,929 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 427 predicate places. [2024-06-28 04:41:33,929 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 703 transitions, 13236 flow [2024-06-28 04:41:33,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:41:33,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:41:33,929 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 04:41:33,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 04:41:33,930 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:41:33,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:41:33,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1562087304, now seen corresponding path program 6 times [2024-06-28 04:41:33,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:41:33,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973667715] [2024-06-28 04:41:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:41:33,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:41:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:41:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:41:36,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:41:36,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973667715] [2024-06-28 04:41:36,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973667715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:41:36,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:41:36,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:41:36,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19400904] [2024-06-28 04:41:36,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:41:36,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:41:36,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:41:36,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:41:36,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:41:36,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:41:36,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 703 transitions, 13236 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:41:36,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:41:36,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:41:36,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:41:39,847 INFO L124 PetriNetUnfolderBase]: 5034/8178 cut-off events. [2024-06-28 04:41:39,847 INFO L125 PetriNetUnfolderBase]: For 1359347/1359347 co-relation queries the response was YES. [2024-06-28 04:41:39,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98938 conditions, 8178 events. 5034/8178 cut-off events. For 1359347/1359347 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 55441 event pairs, 1228 based on Foata normal form. 2/8180 useless extension candidates. Maximal degree in co-relation 98722. Up to 7730 conditions per place. [2024-06-28 04:41:39,982 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 654 selfloop transitions, 75 changer transitions 0/734 dead transitions. [2024-06-28 04:41:39,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 734 transitions, 14934 flow [2024-06-28 04:41:39,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:41:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:41:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 04:41:39,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3994708994708995 [2024-06-28 04:41:39,984 INFO L175 Difference]: Start difference. First operand has 470 places, 703 transitions, 13236 flow. Second operand 9 states and 151 transitions. [2024-06-28 04:41:39,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 734 transitions, 14934 flow [2024-06-28 04:41:44,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 734 transitions, 14694 flow, removed 103 selfloop flow, removed 4 redundant places. [2024-06-28 04:41:44,223 INFO L231 Difference]: Finished difference. Result has 475 places, 705 transitions, 13289 flow [2024-06-28 04:41:44,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13038, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13289, PETRI_PLACES=475, PETRI_TRANSITIONS=705} [2024-06-28 04:41:44,224 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 432 predicate places. [2024-06-28 04:41:44,224 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 705 transitions, 13289 flow [2024-06-28 04:41:44,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:41:44,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:41:44,224 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 04:41:44,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 04:41:44,224 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:41:44,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:41:44,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1926669182, now seen corresponding path program 6 times [2024-06-28 04:41:44,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:41:44,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759854840] [2024-06-28 04:41:44,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:41:44,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:41:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:41:46,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:41:46,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:41:46,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759854840] [2024-06-28 04:41:46,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759854840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:41:46,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:41:46,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:41:46,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534418920] [2024-06-28 04:41:46,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:41:46,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:41:46,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:41:46,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:41:46,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:41:46,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:41:46,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 705 transitions, 13289 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:41:46,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:41:46,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:41:46,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:41:50,714 INFO L124 PetriNetUnfolderBase]: 5060/8208 cut-off events. [2024-06-28 04:41:50,714 INFO L125 PetriNetUnfolderBase]: For 1371380/1371380 co-relation queries the response was YES. [2024-06-28 04:41:50,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99730 conditions, 8208 events. 5060/8208 cut-off events. For 1371380/1371380 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 55629 event pairs, 1229 based on Foata normal form. 2/8210 useless extension candidates. Maximal degree in co-relation 99513. Up to 7617 conditions per place. [2024-06-28 04:41:50,848 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 663 selfloop transitions, 129 changer transitions 0/797 dead transitions. [2024-06-28 04:41:50,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 797 transitions, 16790 flow [2024-06-28 04:41:50,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:41:50,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:41:50,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 04:41:50,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:41:50,850 INFO L175 Difference]: Start difference. First operand has 475 places, 705 transitions, 13289 flow. Second operand 9 states and 162 transitions. [2024-06-28 04:41:50,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 797 transitions, 16790 flow [2024-06-28 04:41:54,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 797 transitions, 16605 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 04:41:54,770 INFO L231 Difference]: Finished difference. Result has 482 places, 761 transitions, 14918 flow [2024-06-28 04:41:54,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13104, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14918, PETRI_PLACES=482, PETRI_TRANSITIONS=761} [2024-06-28 04:41:54,770 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 439 predicate places. [2024-06-28 04:41:54,770 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 761 transitions, 14918 flow [2024-06-28 04:41:54,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:41:54,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:41:54,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:41:54,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 04:41:54,771 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:41:54,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:41:54,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1830248072, now seen corresponding path program 7 times [2024-06-28 04:41:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:41:54,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579496979] [2024-06-28 04:41:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:41:54,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:41:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:41:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:41:59,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:41:59,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579496979] [2024-06-28 04:41:59,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579496979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:41:59,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:41:59,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:41:59,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629461460] [2024-06-28 04:41:59,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:41:59,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:41:59,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:41:59,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:41:59,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:41:59,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:41:59,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 761 transitions, 14918 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:41:59,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:41:59,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:41:59,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:42:02,899 INFO L124 PetriNetUnfolderBase]: 5124/8304 cut-off events. [2024-06-28 04:42:02,899 INFO L125 PetriNetUnfolderBase]: For 1478470/1478470 co-relation queries the response was YES. [2024-06-28 04:42:03,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102836 conditions, 8304 events. 5124/8304 cut-off events. For 1478470/1478470 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 56220 event pairs, 1231 based on Foata normal form. 12/8316 useless extension candidates. Maximal degree in co-relation 102615. Up to 7808 conditions per place. [2024-06-28 04:42:03,036 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 735 selfloop transitions, 54 changer transitions 0/794 dead transitions. [2024-06-28 04:42:03,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 794 transitions, 17037 flow [2024-06-28 04:42:03,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:42:03,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:42:03,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 04:42:03,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-28 04:42:03,037 INFO L175 Difference]: Start difference. First operand has 482 places, 761 transitions, 14918 flow. Second operand 9 states and 150 transitions. [2024-06-28 04:42:03,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 794 transitions, 17037 flow [2024-06-28 04:42:08,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 794 transitions, 16780 flow, removed 116 selfloop flow, removed 3 redundant places. [2024-06-28 04:42:08,114 INFO L231 Difference]: Finished difference. Result has 488 places, 766 transitions, 15091 flow [2024-06-28 04:42:08,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14661, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15091, PETRI_PLACES=488, PETRI_TRANSITIONS=766} [2024-06-28 04:42:08,114 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 445 predicate places. [2024-06-28 04:42:08,114 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 766 transitions, 15091 flow [2024-06-28 04:42:08,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:42:08,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:42:08,115 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 04:42:08,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 04:42:08,115 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:42:08,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:42:08,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2007452030, now seen corresponding path program 7 times [2024-06-28 04:42:08,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:42:08,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373181970] [2024-06-28 04:42:08,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:42:08,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:42:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:42:12,086 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 04:42:12,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:42:12,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373181970] [2024-06-28 04:42:12,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373181970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:42:12,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:42:12,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:42:12,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364454554] [2024-06-28 04:42:12,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:42:12,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:42:12,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:42:12,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:42:12,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:42:12,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:42:12,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 766 transitions, 15091 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:42:12,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:42:12,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:42:12,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:42:15,787 INFO L124 PetriNetUnfolderBase]: 5196/8406 cut-off events. [2024-06-28 04:42:15,788 INFO L125 PetriNetUnfolderBase]: For 1489052/1489052 co-relation queries the response was YES. [2024-06-28 04:42:15,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105139 conditions, 8406 events. 5196/8406 cut-off events. For 1489052/1489052 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 56801 event pairs, 1229 based on Foata normal form. 4/8410 useless extension candidates. Maximal degree in co-relation 104916. Up to 7910 conditions per place. [2024-06-28 04:42:15,931 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 732 selfloop transitions, 69 changer transitions 0/806 dead transitions. [2024-06-28 04:42:15,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 806 transitions, 17615 flow [2024-06-28 04:42:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:42:15,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:42:15,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 04:42:15,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:42:15,932 INFO L175 Difference]: Start difference. First operand has 488 places, 766 transitions, 15091 flow. Second operand 9 states and 153 transitions. [2024-06-28 04:42:15,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 806 transitions, 17615 flow [2024-06-28 04:42:20,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 806 transitions, 17436 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 04:42:20,530 INFO L231 Difference]: Finished difference. Result has 490 places, 778 transitions, 15636 flow [2024-06-28 04:42:20,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14912, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=705, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15636, PETRI_PLACES=490, PETRI_TRANSITIONS=778} [2024-06-28 04:42:20,531 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 447 predicate places. [2024-06-28 04:42:20,531 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 778 transitions, 15636 flow [2024-06-28 04:42:20,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:42:20,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:42:20,531 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 04:42:20,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 04:42:20,532 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:42:20,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:42:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2007456680, now seen corresponding path program 8 times [2024-06-28 04:42:20,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:42:20,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209846744] [2024-06-28 04:42:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:42:20,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:42:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:42:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:42:24,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:42:24,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209846744] [2024-06-28 04:42:24,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209846744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:42:24,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:42:24,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:42:24,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436620509] [2024-06-28 04:42:24,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:42:24,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:42:24,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:42:24,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:42:24,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:42:24,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:42:24,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 778 transitions, 15636 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:42:24,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:42:24,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:42:24,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15