./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe016_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe016_power.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe016_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --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 04:11:05,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:11:05,644 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:11:05,650 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:11:05,651 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:11:05,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:11:05,678 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:11:05,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:11:05,679 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:11:05,682 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:11:05,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:11:05,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:11:05,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:11:05,683 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:11:05,684 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:11:05,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:11:05,684 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:11:05,684 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:11:05,684 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:11:05,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:11:05,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:11:05,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:11:05,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:11:05,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:11:05,686 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:11:05,687 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:11:05,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:11:05,687 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:11:05,687 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:11:05,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:11:05,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:11:05,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:11:05,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:11:05,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:11:05,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:11:05,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:11:05,689 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:11:05,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:11:05,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:11:05,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:11:05,690 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:11:05,690 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:11:05,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:11:05,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:11:05,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:11:05,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:11:05,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:11:05,930 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:11:05,930 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:11:05,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_power.opt.i [2024-06-28 04:11:06,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:11:07,111 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:11:07,112 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_power.opt.i [2024-06-28 04:11:07,126 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/033d7fdae/1cdefb2c334c49dfa863f1b675099682/FLAG1115d02be [2024-06-28 04:11:07,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/033d7fdae/1cdefb2c334c49dfa863f1b675099682 [2024-06-28 04:11:07,138 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:11:07,139 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:11:07,139 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe016_power.opt.yml/witness.yml [2024-06-28 04:11:07,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:11:07,371 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:11:07,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:11:07,377 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:11:07,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:11:07,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:11:07" (1/2) ... [2024-06-28 04:11:07,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:11:07, skipping insertion in model container [2024-06-28 04:11:07,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:11:07" (1/2) ... [2024-06-28 04:11:07,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@487da44c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:11:07, skipping insertion in model container [2024-06-28 04:11:07,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:11:07" (2/2) ... [2024-06-28 04:11:07,384 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8eb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:07, skipping insertion in model container [2024-06-28 04:11:07,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:11:07" (2/2) ... [2024-06-28 04:11:07,384 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:11:07,516 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:11:07,518 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$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$r_buff0_thd4 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2)))) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2))))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0) [2024-06-28 04:11:07,518 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_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_buff0_thd4 == (_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$r_buff1_thd4 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_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_EAX$read_delayed_var == 2)))) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2))))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0) [2024-06-28 04:11:07,518 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$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$r_buff0_thd4 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2)))) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2))))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0) [2024-06-28 04:11:07,518 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_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_buff0_thd4 == (_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$r_buff1_thd4 == (_Bool)0) && __unbuffered_p2_EAX$w_buff0 == 0) && __unbuffered_p2_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p2_EAX$w_buff1 == 0) && __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff0_thd4 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$r_buff1_thd4 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && x$w_buff0 == 0) && x$w_buff0_used == (_Bool)0) && x$w_buff1 == 0) && x$w_buff1_used == (_Bool)0) && (__unbuffered_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_EAX$read_delayed_var == 2)))) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && ((*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1) || *__unbuffered_p2_EAX$read_delayed_var == 2))))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0) [2024-06-28 04:11:07,518 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:11:07,519 INFO L106 edCorrectnessWitness]: ghost_update [L862-L862] multithreaded = 1; [2024-06-28 04:11:07,557 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:11:07,843 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:11:07,850 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 04:11:08,015 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:11:08,062 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:11:08,063 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:08 WrapperNode [2024-06-28 04:11:08,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:11:08,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:11:08,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:11:08,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:11:08,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:08" (1/1) ... [2024-06-28 04:11:08,084 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:08" (1/1) ... [2024-06-28 04:11:08,132 INFO L138 Inliner]: procedures = 176, calls = 124, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 327 [2024-06-28 04:11:08,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:11:08,134 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:11:08,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:11:08,135 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:11:08,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:08" (1/1) ... [2024-06-28 04:11:08,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:08" (1/1) ... [2024-06-28 04:11:08,148 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:08" (1/1) ... [2024-06-28 04:11:08,172 INFO L175 MemorySlicer]: Split 78 memory accesses to 2 slices as follows [2, 76]. 97 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 11 writes are split as follows [0, 11]. [2024-06-28 04:11:08,180 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:08" (1/1) ... [2024-06-28 04:11:08,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:08" (1/1) ... [2024-06-28 04:11:08,196 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:08" (1/1) ... [2024-06-28 04:11:08,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:08" (1/1) ... [2024-06-28 04:11:08,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:08" (1/1) ... [2024-06-28 04:11:08,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:08" (1/1) ... [2024-06-28 04:11:08,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:11:08,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:11:08,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:11:08,226 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:11:08,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:08" (1/1) ... [2024-06-28 04:11:08,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:11:08,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:11:08,250 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 04:11:08,263 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 04:11:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 04:11:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 04:11:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 04:11:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 04:11:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:11:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:11:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:11:08,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:11:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:11:08,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:11:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 04:11:08,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 04:11:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 04:11:08,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 04:11:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:11:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 04:11:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:11:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:11:08,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:11:08,287 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 04:11:08,470 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:11:08,472 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:11:09,070 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:11:09,070 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:11:09,626 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:11:09,626 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:11:09,627 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:11:09 BoogieIcfgContainer [2024-06-28 04:11:09,627 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:11:09,629 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:11:09,629 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:11:09,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:11:09,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:11:07" (1/4) ... [2024-06-28 04:11:09,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59722e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:11:09, skipping insertion in model container [2024-06-28 04:11:09,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:11:07" (2/4) ... [2024-06-28 04:11:09,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59722e70 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:11:09, skipping insertion in model container [2024-06-28 04:11:09,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:11:08" (3/4) ... [2024-06-28 04:11:09,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59722e70 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:11:09, skipping insertion in model container [2024-06-28 04:11:09,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:11:09" (4/4) ... [2024-06-28 04:11:09,633 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_power.opt.i [2024-06-28 04:11:09,647 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:11:09,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 04:11:09,647 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:11:09,710 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:11:09,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 04:11:09,838 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-28 04:11:09,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:11:09,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 04:11:09,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 04:11:09,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-28 04:11:09,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:11:09,855 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;@2a3ef844, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:11:09,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 04:11:09,858 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:11:09,858 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 04:11:09,858 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:11:09,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:09,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:11:09,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:11:09,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:09,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1075226008, now seen corresponding path program 1 times [2024-06-28 04:11:09,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:09,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121636746] [2024-06-28 04:11:09,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:09,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:12,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:12,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121636746] [2024-06-28 04:11:12,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121636746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:12,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:12,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:11:12,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658830526] [2024-06-28 04:11:12,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:12,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:11:12,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:11:12,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:11:12,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 52 [2024-06-28 04:11:12,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 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 04:11:12,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:12,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 52 [2024-06-28 04:11:12,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:14,461 INFO L124 PetriNetUnfolderBase]: 8561/11714 cut-off events. [2024-06-28 04:11:14,461 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2024-06-28 04:11:14,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23790 conditions, 11714 events. 8561/11714 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 60085 event pairs, 6368 based on Foata normal form. 1/11535 useless extension candidates. Maximal degree in co-relation 23777. Up to 11694 conditions per place. [2024-06-28 04:11:14,527 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 48 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 04:11:14,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 245 flow [2024-06-28 04:11:14,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:11:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:11:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-06-28 04:11:14,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2024-06-28 04:11:14,537 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 87 transitions. [2024-06-28 04:11:14,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 245 flow [2024-06-28 04:11:14,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 238 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 04:11:14,542 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-28 04:11:14,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-28 04:11:14,546 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-28 04:11:14,546 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-28 04:11:14,546 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 04:11:14,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:14,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:14,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:11:14,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:11:14,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:14,548 INFO L85 PathProgramCache]: Analyzing trace with hash 218325331, now seen corresponding path program 1 times [2024-06-28 04:11:14,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:14,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740771873] [2024-06-28 04:11:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:14,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:16,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:16,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:16,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740771873] [2024-06-28 04:11:16,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740771873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:16,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:16,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 04:11:16,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208791268] [2024-06-28 04:11:16,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:16,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 04:11:16,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:16,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 04:11:16,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 04:11:16,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:11:16,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:16,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:16,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:11:16,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:19,484 INFO L124 PetriNetUnfolderBase]: 10503/14344 cut-off events. [2024-06-28 04:11:19,484 INFO L125 PetriNetUnfolderBase]: For 2656/2676 co-relation queries the response was YES. [2024-06-28 04:11:19,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32805 conditions, 14344 events. 10503/14344 cut-off events. For 2656/2676 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 72805 event pairs, 4227 based on Foata normal form. 26/14358 useless extension candidates. Maximal degree in co-relation 32793. Up to 13871 conditions per place. [2024-06-28 04:11:19,548 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 71 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2024-06-28 04:11:19,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 90 transitions, 419 flow [2024-06-28 04:11:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:11:19,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:11:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-28 04:11:19,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2024-06-28 04:11:19,551 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 122 transitions. [2024-06-28 04:11:19,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 90 transitions, 419 flow [2024-06-28 04:11:19,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 90 transitions, 414 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:11:19,553 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 223 flow [2024-06-28 04:11:19,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-06-28 04:11:19,554 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-06-28 04:11:19,554 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 223 flow [2024-06-28 04:11:19,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:19,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:19,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:19,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:11:19,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:11:19,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:19,555 INFO L85 PathProgramCache]: Analyzing trace with hash -642703854, now seen corresponding path program 1 times [2024-06-28 04:11:19,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:19,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332148731] [2024-06-28 04:11:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:19,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:23,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:23,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332148731] [2024-06-28 04:11:23,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332148731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:23,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:23,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:11:23,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733672036] [2024-06-28 04:11:23,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:23,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:11:23,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:23,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:11:23,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:11:23,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:11:23,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 223 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 04:11:23,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:23,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:11:23,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:25,940 INFO L124 PetriNetUnfolderBase]: 10779/14768 cut-off events. [2024-06-28 04:11:25,940 INFO L125 PetriNetUnfolderBase]: For 9981/10054 co-relation queries the response was YES. [2024-06-28 04:11:25,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39342 conditions, 14768 events. 10779/14768 cut-off events. For 9981/10054 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 75683 event pairs, 3371 based on Foata normal form. 84/14840 useless extension candidates. Maximal degree in co-relation 39327. Up to 13873 conditions per place. [2024-06-28 04:11:26,024 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 85 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-06-28 04:11:26,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 107 transitions, 569 flow [2024-06-28 04:11:26,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:11:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:11:26,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-06-28 04:11:26,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5692307692307692 [2024-06-28 04:11:26,027 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 223 flow. Second operand 5 states and 148 transitions. [2024-06-28 04:11:26,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 107 transitions, 569 flow [2024-06-28 04:11:26,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 107 transitions, 563 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-28 04:11:26,043 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 280 flow [2024-06-28 04:11:26,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-06-28 04:11:26,044 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-28 04:11:26,044 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 280 flow [2024-06-28 04:11:26,045 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 04:11:26,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:26,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:26,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:11:26,046 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:11:26,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:26,046 INFO L85 PathProgramCache]: Analyzing trace with hash -238044685, now seen corresponding path program 1 times [2024-06-28 04:11:26,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:26,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73258611] [2024-06-28 04:11:26,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:26,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:27,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:27,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73258611] [2024-06-28 04:11:27,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73258611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:27,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:27,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:11:27,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841658098] [2024-06-28 04:11:27,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:27,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:11:27,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:27,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:11:27,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:11:27,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:11:27,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 280 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 04:11:27,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:27,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:11:27,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:30,080 INFO L124 PetriNetUnfolderBase]: 8823/12116 cut-off events. [2024-06-28 04:11:30,080 INFO L125 PetriNetUnfolderBase]: For 14184/14232 co-relation queries the response was YES. [2024-06-28 04:11:30,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35291 conditions, 12116 events. 8823/12116 cut-off events. For 14184/14232 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 62666 event pairs, 3908 based on Foata normal form. 50/12154 useless extension candidates. Maximal degree in co-relation 35272. Up to 11798 conditions per place. [2024-06-28 04:11:30,139 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 64 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2024-06-28 04:11:30,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 84 transitions, 500 flow [2024-06-28 04:11:30,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:11:30,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:11:30,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 04:11:30,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653846153846154 [2024-06-28 04:11:30,141 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 280 flow. Second operand 5 states and 121 transitions. [2024-06-28 04:11:30,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 84 transitions, 500 flow [2024-06-28 04:11:30,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 84 transitions, 463 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 04:11:30,147 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 286 flow [2024-06-28 04:11:30,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-06-28 04:11:30,149 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2024-06-28 04:11:30,149 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 286 flow [2024-06-28 04:11:30,149 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 04:11:30,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:30,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:30,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:11:30,151 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:11:30,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:30,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1671872848, now seen corresponding path program 1 times [2024-06-28 04:11:30,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:30,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033813172] [2024-06-28 04:11:30,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:30,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:33,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:33,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033813172] [2024-06-28 04:11:33,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033813172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:33,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:33,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:11:33,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359444444] [2024-06-28 04:11:33,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:33,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:11:33,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:33,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:11:33,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:11:33,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:11:33,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 286 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 04:11:33,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:33,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:11:33,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:35,776 INFO L124 PetriNetUnfolderBase]: 9052/12459 cut-off events. [2024-06-28 04:11:35,776 INFO L125 PetriNetUnfolderBase]: For 17869/17917 co-relation queries the response was YES. [2024-06-28 04:11:35,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37077 conditions, 12459 events. 9052/12459 cut-off events. For 17869/17917 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 64696 event pairs, 3505 based on Foata normal form. 74/12521 useless extension candidates. Maximal degree in co-relation 37056. Up to 11795 conditions per place. [2024-06-28 04:11:35,826 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 79 selfloop transitions, 18 changer transitions 0/102 dead transitions. [2024-06-28 04:11:35,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 102 transitions, 602 flow [2024-06-28 04:11:35,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:11:35,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:11:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 04:11:35,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-28 04:11:35,831 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 286 flow. Second operand 6 states and 148 transitions. [2024-06-28 04:11:35,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 102 transitions, 602 flow [2024-06-28 04:11:35,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 573 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 04:11:35,839 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 332 flow [2024-06-28 04:11:35,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=332, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-06-28 04:11:35,839 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2024-06-28 04:11:35,840 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 332 flow [2024-06-28 04:11:35,840 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 04:11:35,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:35,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:35,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:11:35,840 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:11:35,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:35,841 INFO L85 PathProgramCache]: Analyzing trace with hash 558211974, now seen corresponding path program 1 times [2024-06-28 04:11:35,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:35,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069990155] [2024-06-28 04:11:35,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:35,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:38,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:38,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:38,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069990155] [2024-06-28 04:11:38,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069990155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:38,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:38,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:11:38,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399943760] [2024-06-28 04:11:38,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:38,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:11:38,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:38,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:11:38,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:11:38,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:11:38,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 332 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 04:11:38,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:38,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:11:38,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:40,504 INFO L124 PetriNetUnfolderBase]: 9045/12436 cut-off events. [2024-06-28 04:11:40,504 INFO L125 PetriNetUnfolderBase]: For 24239/24239 co-relation queries the response was YES. [2024-06-28 04:11:40,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39499 conditions, 12436 events. 9045/12436 cut-off events. For 24239/24239 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 64459 event pairs, 4806 based on Foata normal form. 2/12435 useless extension candidates. Maximal degree in co-relation 39477. Up to 12405 conditions per place. [2024-06-28 04:11:40,570 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 68 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2024-06-28 04:11:40,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 560 flow [2024-06-28 04:11:40,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:11:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:11:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-06-28 04:11:40,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41923076923076924 [2024-06-28 04:11:40,572 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 332 flow. Second operand 5 states and 109 transitions. [2024-06-28 04:11:40,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 560 flow [2024-06-28 04:11:40,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 517 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 04:11:40,589 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 354 flow [2024-06-28 04:11:40,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-06-28 04:11:40,590 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2024-06-28 04:11:40,590 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 354 flow [2024-06-28 04:11:40,590 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 04:11:40,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:40,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:40,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:11:40,591 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:11:40,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:40,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1100086851, now seen corresponding path program 1 times [2024-06-28 04:11:40,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:40,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123735804] [2024-06-28 04:11:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:40,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:43,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:43,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123735804] [2024-06-28 04:11:43,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123735804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:43,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:43,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:11:43,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373486271] [2024-06-28 04:11:43,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:43,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:11:43,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:43,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:11:43,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:11:43,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:11:43,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 354 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:43,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:43,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:11:43,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:46,679 INFO L124 PetriNetUnfolderBase]: 10873/14932 cut-off events. [2024-06-28 04:11:46,680 INFO L125 PetriNetUnfolderBase]: For 38382/38479 co-relation queries the response was YES. [2024-06-28 04:11:46,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49370 conditions, 14932 events. 10873/14932 cut-off events. For 38382/38479 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 76709 event pairs, 2633 based on Foata normal form. 85/14999 useless extension candidates. Maximal degree in co-relation 49347. Up to 13311 conditions per place. [2024-06-28 04:11:46,776 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 87 selfloop transitions, 21 changer transitions 0/112 dead transitions. [2024-06-28 04:11:46,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 112 transitions, 742 flow [2024-06-28 04:11:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:11:46,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:11:46,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 04:11:46,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 04:11:46,779 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 354 flow. Second operand 6 states and 143 transitions. [2024-06-28 04:11:46,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 112 transitions, 742 flow [2024-06-28 04:11:46,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 112 transitions, 697 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 04:11:46,797 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 408 flow [2024-06-28 04:11:46,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-06-28 04:11:46,798 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-28 04:11:46,798 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 408 flow [2024-06-28 04:11:46,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:46,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:46,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:46,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:11:46,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:11:46,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:46,799 INFO L85 PathProgramCache]: Analyzing trace with hash -825948131, now seen corresponding path program 1 times [2024-06-28 04:11:46,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:46,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626675587] [2024-06-28 04:11:46,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:46,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:49,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:49,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626675587] [2024-06-28 04:11:49,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626675587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:49,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:49,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:11:49,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096616458] [2024-06-28 04:11:49,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:49,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:11:49,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:49,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:11:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:11:49,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:11:49,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 408 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:49,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:49,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:11:49,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:52,127 INFO L124 PetriNetUnfolderBase]: 10819/14854 cut-off events. [2024-06-28 04:11:52,127 INFO L125 PetriNetUnfolderBase]: For 48160/48263 co-relation queries the response was YES. [2024-06-28 04:11:52,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51320 conditions, 14854 events. 10819/14854 cut-off events. For 48160/48263 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 76288 event pairs, 2603 based on Foata normal form. 85/14921 useless extension candidates. Maximal degree in co-relation 51297. Up to 13287 conditions per place. [2024-06-28 04:11:52,206 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 84 selfloop transitions, 21 changer transitions 0/109 dead transitions. [2024-06-28 04:11:52,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 109 transitions, 704 flow [2024-06-28 04:11:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:11:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:11:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 04:11:52,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-28 04:11:52,208 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 408 flow. Second operand 6 states and 140 transitions. [2024-06-28 04:11:52,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 109 transitions, 704 flow [2024-06-28 04:11:52,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 109 transitions, 671 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 04:11:52,250 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 410 flow [2024-06-28 04:11:52,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=410, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-06-28 04:11:52,250 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-06-28 04:11:52,251 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 410 flow [2024-06-28 04:11:52,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:52,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:52,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:52,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:11:52,251 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:11:52,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash 124704469, now seen corresponding path program 1 times [2024-06-28 04:11:52,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:52,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565599081] [2024-06-28 04:11:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:52,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:54,790 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 04:11:54,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:54,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565599081] [2024-06-28 04:11:54,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565599081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:54,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:54,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:11:54,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205198531] [2024-06-28 04:11:54,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:54,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:11:54,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:54,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:11:54,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:11:54,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:11:54,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 410 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 04:11:54,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:54,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:11:54,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:57,752 INFO L124 PetriNetUnfolderBase]: 10845/14859 cut-off events. [2024-06-28 04:11:57,752 INFO L125 PetriNetUnfolderBase]: For 54762/54762 co-relation queries the response was YES. [2024-06-28 04:11:57,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52771 conditions, 14859 events. 10845/14859 cut-off events. For 54762/54762 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 76246 event pairs, 5232 based on Foata normal form. 8/14865 useless extension candidates. Maximal degree in co-relation 52746. Up to 14737 conditions per place. [2024-06-28 04:11:57,819 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 94 selfloop transitions, 20 changer transitions 0/118 dead transitions. [2024-06-28 04:11:57,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 118 transitions, 854 flow [2024-06-28 04:11:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:11:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:11:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 04:11:57,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-06-28 04:11:57,821 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 410 flow. Second operand 6 states and 132 transitions. [2024-06-28 04:11:57,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 118 transitions, 854 flow [2024-06-28 04:11:57,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 118 transitions, 792 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:11:57,885 INFO L231 Difference]: Finished difference. Result has 76 places, 86 transitions, 541 flow [2024-06-28 04:11:57,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=541, PETRI_PLACES=76, PETRI_TRANSITIONS=86} [2024-06-28 04:11:57,886 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2024-06-28 04:11:57,886 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 86 transitions, 541 flow [2024-06-28 04:11:57,886 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 04:11:57,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:57,886 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 04:11:57,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:11:57,886 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:11:57,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:57,887 INFO L85 PathProgramCache]: Analyzing trace with hash -429310841, now seen corresponding path program 1 times [2024-06-28 04:11:57,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:57,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54945537] [2024-06-28 04:11:57,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:57,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:00,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:00,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:00,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54945537] [2024-06-28 04:12:00,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54945537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:00,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:00,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:12:00,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236051010] [2024-06-28 04:12:00,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:00,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:12:00,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:00,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:12:00,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:12:00,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:12:00,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 86 transitions, 541 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 04:12:00,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:00,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:12:00,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:03,404 INFO L124 PetriNetUnfolderBase]: 10624/14721 cut-off events. [2024-06-28 04:12:03,404 INFO L125 PetriNetUnfolderBase]: For 70325/70360 co-relation queries the response was YES. [2024-06-28 04:12:03,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56574 conditions, 14721 events. 10624/14721 cut-off events. For 70325/70360 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 76804 event pairs, 4081 based on Foata normal form. 40/14747 useless extension candidates. Maximal degree in co-relation 56546. Up to 13770 conditions per place. [2024-06-28 04:12:03,477 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 96 selfloop transitions, 34 changer transitions 0/138 dead transitions. [2024-06-28 04:12:03,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 138 transitions, 1081 flow [2024-06-28 04:12:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:12:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:12:03,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 04:12:03,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-28 04:12:03,479 INFO L175 Difference]: Start difference. First operand has 76 places, 86 transitions, 541 flow. Second operand 6 states and 146 transitions. [2024-06-28 04:12:03,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 138 transitions, 1081 flow [2024-06-28 04:12:03,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 138 transitions, 1059 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-28 04:12:03,568 INFO L231 Difference]: Finished difference. Result has 82 places, 101 transitions, 752 flow [2024-06-28 04:12:03,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=752, PETRI_PLACES=82, PETRI_TRANSITIONS=101} [2024-06-28 04:12:03,569 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-28 04:12:03,569 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 101 transitions, 752 flow [2024-06-28 04:12:03,569 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 04:12:03,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:03,570 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 04:12:03,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:12:03,570 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:12:03,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:03,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1432900363, now seen corresponding path program 2 times [2024-06-28 04:12:03,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:03,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751290471] [2024-06-28 04:12:03,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:03,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:06,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:06,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751290471] [2024-06-28 04:12:06,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751290471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:06,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:06,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:12:06,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238114130] [2024-06-28 04:12:06,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:06,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:12:06,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:06,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:12:06,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:12:06,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:12:06,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 101 transitions, 752 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 04:12:06,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:06,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:12:06,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:09,337 INFO L124 PetriNetUnfolderBase]: 10857/15004 cut-off events. [2024-06-28 04:12:09,337 INFO L125 PetriNetUnfolderBase]: For 91406/91406 co-relation queries the response was YES. [2024-06-28 04:12:09,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63261 conditions, 15004 events. 10857/15004 cut-off events. For 91406/91406 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 77987 event pairs, 5137 based on Foata normal form. 16/15015 useless extension candidates. Maximal degree in co-relation 63229. Up to 14588 conditions per place. [2024-06-28 04:12:09,419 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 112 selfloop transitions, 24 changer transitions 0/144 dead transitions. [2024-06-28 04:12:09,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 144 transitions, 1239 flow [2024-06-28 04:12:09,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:12:09,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:12:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-28 04:12:09,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2024-06-28 04:12:09,421 INFO L175 Difference]: Start difference. First operand has 82 places, 101 transitions, 752 flow. Second operand 7 states and 152 transitions. [2024-06-28 04:12:09,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 144 transitions, 1239 flow [2024-06-28 04:12:09,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 144 transitions, 1201 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-28 04:12:09,581 INFO L231 Difference]: Finished difference. Result has 89 places, 110 transitions, 894 flow [2024-06-28 04:12:09,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=894, PETRI_PLACES=89, PETRI_TRANSITIONS=110} [2024-06-28 04:12:09,581 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2024-06-28 04:12:09,582 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 110 transitions, 894 flow [2024-06-28 04:12:09,582 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 04:12:09,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:09,582 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 04:12:09,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:12:09,582 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:12:09,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash -429461237, now seen corresponding path program 1 times [2024-06-28 04:12:09,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:09,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379349052] [2024-06-28 04:12:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:09,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:12,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:12,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379349052] [2024-06-28 04:12:12,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379349052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:12,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:12,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:12:12,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334505357] [2024-06-28 04:12:12,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:12,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:12:12,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:12,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:12:12,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:12:12,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:12:12,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 110 transitions, 894 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 04:12:12,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:12,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:12:12,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:15,764 INFO L124 PetriNetUnfolderBase]: 11387/15608 cut-off events. [2024-06-28 04:12:15,764 INFO L125 PetriNetUnfolderBase]: For 102642/102734 co-relation queries the response was YES. [2024-06-28 04:12:15,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66227 conditions, 15608 events. 11387/15608 cut-off events. For 102642/102734 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 80402 event pairs, 4211 based on Foata normal form. 81/15676 useless extension candidates. Maximal degree in co-relation 66191. Up to 14557 conditions per place. [2024-06-28 04:12:15,854 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 109 selfloop transitions, 45 changer transitions 0/158 dead transitions. [2024-06-28 04:12:15,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 158 transitions, 1450 flow [2024-06-28 04:12:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:12:15,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:12:15,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 04:12:15,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-28 04:12:15,856 INFO L175 Difference]: Start difference. First operand has 89 places, 110 transitions, 894 flow. Second operand 6 states and 146 transitions. [2024-06-28 04:12:15,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 158 transitions, 1450 flow [2024-06-28 04:12:16,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 158 transitions, 1366 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 04:12:16,015 INFO L231 Difference]: Finished difference. Result has 90 places, 114 transitions, 960 flow [2024-06-28 04:12:16,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=960, PETRI_PLACES=90, PETRI_TRANSITIONS=114} [2024-06-28 04:12:16,016 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 35 predicate places. [2024-06-28 04:12:16,016 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 114 transitions, 960 flow [2024-06-28 04:12:16,016 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 04:12:16,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:16,017 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 04:12:16,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:12:16,017 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:12:16,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:16,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2115394322, now seen corresponding path program 1 times [2024-06-28 04:12:16,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:16,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568427467] [2024-06-28 04:12:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:16,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:18,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:18,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568427467] [2024-06-28 04:12:18,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568427467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:18,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:18,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:12:18,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675096595] [2024-06-28 04:12:18,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:18,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:12:18,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:18,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:12:18,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:12:18,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:12:18,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 114 transitions, 960 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 04:12:18,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:18,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:12:18,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:22,690 INFO L124 PetriNetUnfolderBase]: 11553/15790 cut-off events. [2024-06-28 04:12:22,691 INFO L125 PetriNetUnfolderBase]: For 113466/113474 co-relation queries the response was YES. [2024-06-28 04:12:22,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68407 conditions, 15790 events. 11553/15790 cut-off events. For 113466/113474 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 81153 event pairs, 5154 based on Foata normal form. 14/15800 useless extension candidates. Maximal degree in co-relation 68371. Up to 15529 conditions per place. [2024-06-28 04:12:22,792 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 116 selfloop transitions, 42 changer transitions 0/162 dead transitions. [2024-06-28 04:12:22,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 162 transitions, 1540 flow [2024-06-28 04:12:22,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:12:22,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:12:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 161 transitions. [2024-06-28 04:12:22,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870192307692308 [2024-06-28 04:12:22,794 INFO L175 Difference]: Start difference. First operand has 90 places, 114 transitions, 960 flow. Second operand 8 states and 161 transitions. [2024-06-28 04:12:22,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 162 transitions, 1540 flow [2024-06-28 04:12:22,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 162 transitions, 1401 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 04:12:22,994 INFO L231 Difference]: Finished difference. Result has 96 places, 130 transitions, 1107 flow [2024-06-28 04:12:22,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1107, PETRI_PLACES=96, PETRI_TRANSITIONS=130} [2024-06-28 04:12:22,995 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 41 predicate places. [2024-06-28 04:12:22,995 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 130 transitions, 1107 flow [2024-06-28 04:12:22,995 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 04:12:22,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:22,995 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 04:12:22,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:12:22,995 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:12:22,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2087688351, now seen corresponding path program 2 times [2024-06-28 04:12:22,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:22,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824644521] [2024-06-28 04:12:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:22,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:25,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:25,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824644521] [2024-06-28 04:12:25,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824644521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:25,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:25,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:12:25,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832688125] [2024-06-28 04:12:25,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:25,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:12:25,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:25,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:12:25,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:12:25,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:12:25,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 130 transitions, 1107 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 04:12:25,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:25,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:12:25,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:28,609 INFO L124 PetriNetUnfolderBase]: 11491/15708 cut-off events. [2024-06-28 04:12:28,609 INFO L125 PetriNetUnfolderBase]: For 134900/134908 co-relation queries the response was YES. [2024-06-28 04:12:28,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71947 conditions, 15708 events. 11491/15708 cut-off events. For 134900/134908 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 80342 event pairs, 5185 based on Foata normal form. 18/15722 useless extension candidates. Maximal degree in co-relation 71909. Up to 15441 conditions per place. [2024-06-28 04:12:28,705 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 135 selfloop transitions, 24 changer transitions 0/163 dead transitions. [2024-06-28 04:12:28,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 163 transitions, 1505 flow [2024-06-28 04:12:28,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:12:28,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:12:28,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-28 04:12:28,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-06-28 04:12:28,707 INFO L175 Difference]: Start difference. First operand has 96 places, 130 transitions, 1107 flow. Second operand 7 states and 147 transitions. [2024-06-28 04:12:28,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 163 transitions, 1505 flow [2024-06-28 04:12:28,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 163 transitions, 1418 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 04:12:28,897 INFO L231 Difference]: Finished difference. Result has 100 places, 130 transitions, 1079 flow [2024-06-28 04:12:28,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1079, PETRI_PLACES=100, PETRI_TRANSITIONS=130} [2024-06-28 04:12:28,898 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 45 predicate places. [2024-06-28 04:12:28,898 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 130 transitions, 1079 flow [2024-06-28 04:12:28,898 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 04:12:28,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:28,898 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 04:12:28,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:12:28,898 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:12:28,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:28,898 INFO L85 PathProgramCache]: Analyzing trace with hash -421591632, now seen corresponding path program 2 times [2024-06-28 04:12:28,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:28,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529959897] [2024-06-28 04:12:28,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:28,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:32,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:32,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529959897] [2024-06-28 04:12:32,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529959897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:32,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:32,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:12:32,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014339278] [2024-06-28 04:12:32,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:32,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:12:32,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:32,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:12:32,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:12:32,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:12:32,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 130 transitions, 1079 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 04:12:32,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:32,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:12:32,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:35,631 INFO L124 PetriNetUnfolderBase]: 11561/15798 cut-off events. [2024-06-28 04:12:35,631 INFO L125 PetriNetUnfolderBase]: For 146559/146567 co-relation queries the response was YES. [2024-06-28 04:12:35,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73309 conditions, 15798 events. 11561/15798 cut-off events. For 146559/146567 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 81093 event pairs, 5153 based on Foata normal form. 14/15808 useless extension candidates. Maximal degree in co-relation 73269. Up to 15387 conditions per place. [2024-06-28 04:12:35,744 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 126 selfloop transitions, 56 changer transitions 0/186 dead transitions. [2024-06-28 04:12:35,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 186 transitions, 1815 flow [2024-06-28 04:12:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:12:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:12:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 04:12:35,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:12:35,746 INFO L175 Difference]: Start difference. First operand has 100 places, 130 transitions, 1079 flow. Second operand 7 states and 156 transitions. [2024-06-28 04:12:35,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 186 transitions, 1815 flow [2024-06-28 04:12:35,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 186 transitions, 1767 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 04:12:35,968 INFO L231 Difference]: Finished difference. Result has 103 places, 148 transitions, 1411 flow [2024-06-28 04:12:35,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1411, PETRI_PLACES=103, PETRI_TRANSITIONS=148} [2024-06-28 04:12:35,969 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 48 predicate places. [2024-06-28 04:12:35,969 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 148 transitions, 1411 flow [2024-06-28 04:12:35,969 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 04:12:35,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:35,969 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 04:12:35,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:12:35,969 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:12:35,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:35,970 INFO L85 PathProgramCache]: Analyzing trace with hash -427299600, now seen corresponding path program 1 times [2024-06-28 04:12:35,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:35,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840804959] [2024-06-28 04:12:35,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:35,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:38,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:38,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840804959] [2024-06-28 04:12:38,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840804959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:38,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:38,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:12:38,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132222866] [2024-06-28 04:12:38,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:38,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:12:38,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:38,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:12:38,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:12:38,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:12:38,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 148 transitions, 1411 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 04:12:38,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:38,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:12:38,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:42,601 INFO L124 PetriNetUnfolderBase]: 11849/16169 cut-off events. [2024-06-28 04:12:42,602 INFO L125 PetriNetUnfolderBase]: For 178718/178718 co-relation queries the response was YES. [2024-06-28 04:12:42,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79753 conditions, 16169 events. 11849/16169 cut-off events. For 178718/178718 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 82865 event pairs, 5079 based on Foata normal form. 16/16182 useless extension candidates. Maximal degree in co-relation 79710. Up to 15505 conditions per place. [2024-06-28 04:12:42,690 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 182 selfloop transitions, 37 changer transitions 0/223 dead transitions. [2024-06-28 04:12:42,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 223 transitions, 2318 flow [2024-06-28 04:12:42,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:12:42,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:12:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 04:12:42,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45604395604395603 [2024-06-28 04:12:42,693 INFO L175 Difference]: Start difference. First operand has 103 places, 148 transitions, 1411 flow. Second operand 7 states and 166 transitions. [2024-06-28 04:12:42,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 223 transitions, 2318 flow [2024-06-28 04:12:42,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 223 transitions, 2222 flow, removed 47 selfloop flow, removed 1 redundant places. [2024-06-28 04:12:42,885 INFO L231 Difference]: Finished difference. Result has 111 places, 168 transitions, 1615 flow [2024-06-28 04:12:42,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1615, PETRI_PLACES=111, PETRI_TRANSITIONS=168} [2024-06-28 04:12:42,886 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-06-28 04:12:42,886 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 168 transitions, 1615 flow [2024-06-28 04:12:42,886 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 04:12:42,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:42,886 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 04:12:42,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:12:42,886 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:12:42,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:42,887 INFO L85 PathProgramCache]: Analyzing trace with hash 437081460, now seen corresponding path program 2 times [2024-06-28 04:12:42,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:42,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763219871] [2024-06-28 04:12:42,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:42,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:46,009 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 04:12:46,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:46,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763219871] [2024-06-28 04:12:46,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763219871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:46,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:46,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:12:46,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792312284] [2024-06-28 04:12:46,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:46,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:12:46,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:46,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:12:46,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:12:46,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:12:46,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 168 transitions, 1615 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 04:12:46,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:46,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:12:46,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:49,424 INFO L124 PetriNetUnfolderBase]: 12005/16371 cut-off events. [2024-06-28 04:12:49,425 INFO L125 PetriNetUnfolderBase]: For 190115/190115 co-relation queries the response was YES. [2024-06-28 04:12:49,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82014 conditions, 16371 events. 12005/16371 cut-off events. For 190115/190115 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 83766 event pairs, 5188 based on Foata normal form. 16/16385 useless extension candidates. Maximal degree in co-relation 81966. Up to 15917 conditions per place. [2024-06-28 04:12:49,531 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 188 selfloop transitions, 31 changer transitions 0/223 dead transitions. [2024-06-28 04:12:49,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 223 transitions, 2422 flow [2024-06-28 04:12:49,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:12:49,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:12:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 04:12:49,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43131868131868134 [2024-06-28 04:12:49,532 INFO L175 Difference]: Start difference. First operand has 111 places, 168 transitions, 1615 flow. Second operand 7 states and 157 transitions. [2024-06-28 04:12:49,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 223 transitions, 2422 flow [2024-06-28 04:12:49,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 223 transitions, 2328 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-28 04:12:49,834 INFO L231 Difference]: Finished difference. Result has 117 places, 178 transitions, 1716 flow [2024-06-28 04:12:49,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1716, PETRI_PLACES=117, PETRI_TRANSITIONS=178} [2024-06-28 04:12:49,835 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 62 predicate places. [2024-06-28 04:12:49,835 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 178 transitions, 1716 flow [2024-06-28 04:12:49,835 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 04:12:49,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:49,835 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 04:12:49,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:12:49,835 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:12:49,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:49,836 INFO L85 PathProgramCache]: Analyzing trace with hash -418017804, now seen corresponding path program 3 times [2024-06-28 04:12:49,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:49,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345070053] [2024-06-28 04:12:49,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:49,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:53,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:53,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345070053] [2024-06-28 04:12:53,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345070053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:53,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:53,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:12:53,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156095088] [2024-06-28 04:12:53,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:53,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:12:53,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:53,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:12:53,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:12:53,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:12:53,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 178 transitions, 1716 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 04:12:53,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:53,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:12:53,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:56,648 INFO L124 PetriNetUnfolderBase]: 12057/16439 cut-off events. [2024-06-28 04:12:56,648 INFO L125 PetriNetUnfolderBase]: For 209464/209464 co-relation queries the response was YES. [2024-06-28 04:12:56,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84209 conditions, 16439 events. 12057/16439 cut-off events. For 209464/209464 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 84094 event pairs, 5168 based on Foata normal form. 16/16453 useless extension candidates. Maximal degree in co-relation 84158. Up to 15961 conditions per place. [2024-06-28 04:12:56,763 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 198 selfloop transitions, 39 changer transitions 0/241 dead transitions. [2024-06-28 04:12:56,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 241 transitions, 2504 flow [2024-06-28 04:12:56,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:12:56,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:12:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2024-06-28 04:12:56,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42094017094017094 [2024-06-28 04:12:56,765 INFO L175 Difference]: Start difference. First operand has 117 places, 178 transitions, 1716 flow. Second operand 9 states and 197 transitions. [2024-06-28 04:12:56,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 241 transitions, 2504 flow [2024-06-28 04:12:57,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 241 transitions, 2452 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 04:12:57,103 INFO L231 Difference]: Finished difference. Result has 123 places, 183 transitions, 1816 flow [2024-06-28 04:12:57,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1664, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1816, PETRI_PLACES=123, PETRI_TRANSITIONS=183} [2024-06-28 04:12:57,104 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2024-06-28 04:12:57,104 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 183 transitions, 1816 flow [2024-06-28 04:12:57,104 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 04:12:57,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:57,104 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 04:12:57,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:12:57,104 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:12:57,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash -418009868, now seen corresponding path program 1 times [2024-06-28 04:12:57,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:57,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514823774] [2024-06-28 04:12:57,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:57,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:00,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:00,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514823774] [2024-06-28 04:13:00,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514823774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:00,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:00,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:00,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544938393] [2024-06-28 04:13:00,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:00,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:00,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:00,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:00,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:00,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:13:00,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 183 transitions, 1816 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 04:13:00,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:00,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:13:00,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:04,635 INFO L124 PetriNetUnfolderBase]: 12141/16555 cut-off events. [2024-06-28 04:13:04,635 INFO L125 PetriNetUnfolderBase]: For 228897/228897 co-relation queries the response was YES. [2024-06-28 04:13:04,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86577 conditions, 16555 events. 12141/16555 cut-off events. For 228897/228897 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 84692 event pairs, 5200 based on Foata normal form. 16/16569 useless extension candidates. Maximal degree in co-relation 86524. Up to 16339 conditions per place. [2024-06-28 04:13:04,741 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 200 selfloop transitions, 25 changer transitions 0/229 dead transitions. [2024-06-28 04:13:04,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 229 transitions, 2512 flow [2024-06-28 04:13:04,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:13:04,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:13:04,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 04:13:04,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-06-28 04:13:04,743 INFO L175 Difference]: Start difference. First operand has 123 places, 183 transitions, 1816 flow. Second operand 7 states and 154 transitions. [2024-06-28 04:13:04,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 229 transitions, 2512 flow [2024-06-28 04:13:05,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 229 transitions, 2406 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 04:13:05,067 INFO L231 Difference]: Finished difference. Result has 123 places, 186 transitions, 1825 flow [2024-06-28 04:13:05,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1825, PETRI_PLACES=123, PETRI_TRANSITIONS=186} [2024-06-28 04:13:05,068 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2024-06-28 04:13:05,068 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 186 transitions, 1825 flow [2024-06-28 04:13:05,068 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 04:13:05,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:05,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:05,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:13:05,068 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:13:05,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:05,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1571179108, now seen corresponding path program 1 times [2024-06-28 04:13:05,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:05,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252455421] [2024-06-28 04:13:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:05,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:08,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252455421] [2024-06-28 04:13:08,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252455421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:08,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:08,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:08,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54110871] [2024-06-28 04:13:08,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:08,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:08,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:08,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:08,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:08,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:13:08,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 186 transitions, 1825 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 04:13:08,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:08,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:13:08,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:13,279 INFO L124 PetriNetUnfolderBase]: 14685/19866 cut-off events. [2024-06-28 04:13:13,279 INFO L125 PetriNetUnfolderBase]: For 304850/304936 co-relation queries the response was YES. [2024-06-28 04:13:13,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105843 conditions, 19866 events. 14685/19866 cut-off events. For 304850/304936 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 102823 event pairs, 4057 based on Foata normal form. 116/19969 useless extension candidates. Maximal degree in co-relation 105789. Up to 15537 conditions per place. [2024-06-28 04:13:13,443 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 179 selfloop transitions, 112 changer transitions 0/295 dead transitions. [2024-06-28 04:13:13,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 295 transitions, 3289 flow [2024-06-28 04:13:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:13:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:13:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-06-28 04:13:13,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-06-28 04:13:13,445 INFO L175 Difference]: Start difference. First operand has 123 places, 186 transitions, 1825 flow. Second operand 10 states and 245 transitions. [2024-06-28 04:13:13,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 295 transitions, 3289 flow [2024-06-28 04:13:13,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 295 transitions, 3208 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 04:13:13,930 INFO L231 Difference]: Finished difference. Result has 131 places, 212 transitions, 2352 flow [2024-06-28 04:13:13,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2352, PETRI_PLACES=131, PETRI_TRANSITIONS=212} [2024-06-28 04:13:13,931 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 76 predicate places. [2024-06-28 04:13:13,931 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 212 transitions, 2352 flow [2024-06-28 04:13:13,931 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 04:13:13,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:13,931 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 04:13:13,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:13:13,931 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:13:13,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:13,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1152716660, now seen corresponding path program 2 times [2024-06-28 04:13:13,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:13,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061232546] [2024-06-28 04:13:13,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:13,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:17,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:17,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061232546] [2024-06-28 04:13:17,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061232546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:17,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:17,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:17,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421565044] [2024-06-28 04:13:17,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:17,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:17,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:17,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:17,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:17,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:13:17,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 212 transitions, 2352 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 04:13:17,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:17,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:13:17,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:22,973 INFO L124 PetriNetUnfolderBase]: 17015/22844 cut-off events. [2024-06-28 04:13:22,973 INFO L125 PetriNetUnfolderBase]: For 403639/403647 co-relation queries the response was YES. [2024-06-28 04:13:23,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133867 conditions, 22844 events. 17015/22844 cut-off events. For 403639/403647 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 118543 event pairs, 6176 based on Foata normal form. 54/22894 useless extension candidates. Maximal degree in co-relation 133809. Up to 19859 conditions per place. [2024-06-28 04:13:23,152 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 215 selfloop transitions, 91 changer transitions 0/310 dead transitions. [2024-06-28 04:13:23,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 310 transitions, 3774 flow [2024-06-28 04:13:23,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:13:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:13:23,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 238 transitions. [2024-06-28 04:13:23,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4160839160839161 [2024-06-28 04:13:23,154 INFO L175 Difference]: Start difference. First operand has 131 places, 212 transitions, 2352 flow. Second operand 11 states and 238 transitions. [2024-06-28 04:13:23,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 310 transitions, 3774 flow [2024-06-28 04:13:24,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 310 transitions, 3519 flow, removed 93 selfloop flow, removed 4 redundant places. [2024-06-28 04:13:24,354 INFO L231 Difference]: Finished difference. Result has 140 places, 242 transitions, 2780 flow [2024-06-28 04:13:24,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2780, PETRI_PLACES=140, PETRI_TRANSITIONS=242} [2024-06-28 04:13:24,355 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 85 predicate places. [2024-06-28 04:13:24,355 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 242 transitions, 2780 flow [2024-06-28 04:13:24,355 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 04:13:24,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:24,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:24,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:13:24,355 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:13:24,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:24,356 INFO L85 PathProgramCache]: Analyzing trace with hash 293831900, now seen corresponding path program 3 times [2024-06-28 04:13:24,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:24,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705610072] [2024-06-28 04:13:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:24,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:27,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:27,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:27,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705610072] [2024-06-28 04:13:27,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705610072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:27,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:27,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:27,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056238251] [2024-06-28 04:13:27,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:27,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:27,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:27,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:27,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:27,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:13:27,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 242 transitions, 2780 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 04:13:27,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:27,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:13:27,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:33,801 INFO L124 PetriNetUnfolderBase]: 16907/22712 cut-off events. [2024-06-28 04:13:33,802 INFO L125 PetriNetUnfolderBase]: For 424234/424242 co-relation queries the response was YES. [2024-06-28 04:13:33,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135303 conditions, 22712 events. 16907/22712 cut-off events. For 424234/424242 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 117871 event pairs, 6229 based on Foata normal form. 54/22762 useless extension candidates. Maximal degree in co-relation 135241. Up to 19827 conditions per place. [2024-06-28 04:13:33,977 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 219 selfloop transitions, 86 changer transitions 0/309 dead transitions. [2024-06-28 04:13:33,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 309 transitions, 3870 flow [2024-06-28 04:13:33,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:13:33,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:13:33,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2024-06-28 04:13:33,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-06-28 04:13:33,979 INFO L175 Difference]: Start difference. First operand has 140 places, 242 transitions, 2780 flow. Second operand 10 states and 220 transitions. [2024-06-28 04:13:33,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 309 transitions, 3870 flow [2024-06-28 04:13:34,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 309 transitions, 3703 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 04:13:34,692 INFO L231 Difference]: Finished difference. Result has 146 places, 248 transitions, 2984 flow [2024-06-28 04:13:34,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2625, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2984, PETRI_PLACES=146, PETRI_TRANSITIONS=248} [2024-06-28 04:13:34,693 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 91 predicate places. [2024-06-28 04:13:34,693 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 248 transitions, 2984 flow [2024-06-28 04:13:34,693 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 04:13:34,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:34,693 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 04:13:34,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:13:34,693 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:13:34,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:34,694 INFO L85 PathProgramCache]: Analyzing trace with hash -73832430, now seen corresponding path program 4 times [2024-06-28 04:13:34,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:34,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923543162] [2024-06-28 04:13:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:34,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:38,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:38,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923543162] [2024-06-28 04:13:38,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923543162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:38,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:38,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:38,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339985954] [2024-06-28 04:13:38,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:38,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:38,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:38,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:38,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:38,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 52 [2024-06-28 04:13:38,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 248 transitions, 2984 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 04:13:38,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:38,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 52 [2024-06-28 04:13:38,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:44,444 INFO L124 PetriNetUnfolderBase]: 19739/26356 cut-off events. [2024-06-28 04:13:44,444 INFO L125 PetriNetUnfolderBase]: For 525069/525077 co-relation queries the response was YES. [2024-06-28 04:13:44,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159627 conditions, 26356 events. 19739/26356 cut-off events. For 525069/525077 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 137465 event pairs, 6490 based on Foata normal form. 54/26406 useless extension candidates. Maximal degree in co-relation 159561. Up to 20517 conditions per place. [2024-06-28 04:13:44,686 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 221 selfloop transitions, 144 changer transitions 0/369 dead transitions. [2024-06-28 04:13:44,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 369 transitions, 4806 flow [2024-06-28 04:13:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:13:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:13:44,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 258 transitions. [2024-06-28 04:13:44,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45104895104895104 [2024-06-28 04:13:44,688 INFO L175 Difference]: Start difference. First operand has 146 places, 248 transitions, 2984 flow. Second operand 11 states and 258 transitions. [2024-06-28 04:13:44,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 369 transitions, 4806 flow [2024-06-28 04:13:45,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 369 transitions, 4715 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 04:13:45,848 INFO L231 Difference]: Finished difference. Result has 154 places, 284 transitions, 3742 flow [2024-06-28 04:13:45,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2893, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3742, PETRI_PLACES=154, PETRI_TRANSITIONS=284} [2024-06-28 04:13:45,849 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 99 predicate places. [2024-06-28 04:13:45,849 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 284 transitions, 3742 flow [2024-06-28 04:13:45,849 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 04:13:45,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:45,849 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 04:13:45,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:13:45,850 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:13:45,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:45,850 INFO L85 PathProgramCache]: Analyzing trace with hash -363868860, now seen corresponding path program 1 times [2024-06-28 04:13:45,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:45,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514227035] [2024-06-28 04:13:45,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:45,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:49,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:49,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514227035] [2024-06-28 04:13:49,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514227035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:49,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:49,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:49,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916972197] [2024-06-28 04:13:49,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:49,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:49,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:49,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:49,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:49,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:13:49,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 284 transitions, 3742 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 04:13:49,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:49,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:13:49,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:55,984 INFO L124 PetriNetUnfolderBase]: 19803/26592 cut-off events. [2024-06-28 04:13:55,984 INFO L125 PetriNetUnfolderBase]: For 615693/615998 co-relation queries the response was YES. [2024-06-28 04:13:56,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173570 conditions, 26592 events. 19803/26592 cut-off events. For 615693/615998 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 141142 event pairs, 5156 based on Foata normal form. 100/26490 useless extension candidates. Maximal degree in co-relation 173500. Up to 24191 conditions per place. [2024-06-28 04:13:56,251 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 262 selfloop transitions, 66 changer transitions 0/348 dead transitions. [2024-06-28 04:13:56,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 348 transitions, 4982 flow [2024-06-28 04:13:56,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:13:56,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:13:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 04:13:56,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489010989010989 [2024-06-28 04:13:56,253 INFO L175 Difference]: Start difference. First operand has 154 places, 284 transitions, 3742 flow. Second operand 7 states and 178 transitions. [2024-06-28 04:13:56,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 348 transitions, 4982 flow [2024-06-28 04:13:57,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 348 transitions, 4751 flow, removed 80 selfloop flow, removed 5 redundant places. [2024-06-28 04:13:57,750 INFO L231 Difference]: Finished difference. Result has 156 places, 290 transitions, 3797 flow [2024-06-28 04:13:57,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3515, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3797, PETRI_PLACES=156, PETRI_TRANSITIONS=290} [2024-06-28 04:13:57,750 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 101 predicate places. [2024-06-28 04:13:57,751 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 290 transitions, 3797 flow [2024-06-28 04:13:57,751 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 04:13:57,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:57,751 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 04:13:57,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:13:57,751 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:13:57,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:57,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1654393548, now seen corresponding path program 2 times [2024-06-28 04:13:57,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:57,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057719023] [2024-06-28 04:13:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:57,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:01,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:01,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057719023] [2024-06-28 04:14:01,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057719023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:01,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:01,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:14:01,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844922085] [2024-06-28 04:14:01,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:01,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:14:01,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:01,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:14:01,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:14:01,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 52 [2024-06-28 04:14:01,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 290 transitions, 3797 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 04:14:01,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:01,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 52 [2024-06-28 04:14:01,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:08,118 INFO L124 PetriNetUnfolderBase]: 20053/26938 cut-off events. [2024-06-28 04:14:08,118 INFO L125 PetriNetUnfolderBase]: For 650693/650998 co-relation queries the response was YES. [2024-06-28 04:14:08,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175497 conditions, 26938 events. 20053/26938 cut-off events. For 650693/650998 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 143651 event pairs, 5664 based on Foata normal form. 100/26836 useless extension candidates. Maximal degree in co-relation 175425. Up to 25329 conditions per place. [2024-06-28 04:14:08,333 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 259 selfloop transitions, 62 changer transitions 0/341 dead transitions. [2024-06-28 04:14:08,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 341 transitions, 4833 flow [2024-06-28 04:14:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:14:08,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:14:08,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 04:14:08,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 04:14:08,334 INFO L175 Difference]: Start difference. First operand has 156 places, 290 transitions, 3797 flow. Second operand 7 states and 169 transitions. [2024-06-28 04:14:08,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 341 transitions, 4833 flow [2024-06-28 04:14:09,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 341 transitions, 4678 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-28 04:14:09,816 INFO L231 Difference]: Finished difference. Result has 160 places, 293 transitions, 3856 flow [2024-06-28 04:14:09,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=3660, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3856, PETRI_PLACES=160, PETRI_TRANSITIONS=293} [2024-06-28 04:14:09,817 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 105 predicate places. [2024-06-28 04:14:09,817 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 293 transitions, 3856 flow [2024-06-28 04:14:09,817 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 04:14:09,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:09,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:09,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 04:14:09,818 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 04:14:09,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:09,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1667179414, now seen corresponding path program 3 times [2024-06-28 04:14:09,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:09,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700491981] [2024-06-28 04:14:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:09,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat