./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix017_power.opt_rmo.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/mix017_power.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix017_power.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix017_power.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --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 03:06:33,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:06:33,565 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:06:33,570 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:06:33,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:06:33,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:06:33,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:06:33,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:06:33,584 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:06:33,584 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:06:33,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:06:33,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:06:33,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:06:33,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:06:33,586 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:06:33,586 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:06:33,586 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:06:33,586 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:06:33,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:06:33,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:06:33,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:06:33,588 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:06:33,588 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:06:33,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:06:33,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:06:33,589 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:06:33,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:06:33,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:06:33,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:06:33,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:06:33,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:06:33,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:06:33,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:06:33,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:06:33,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:06:33,591 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:06:33,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:06:33,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:06:33,592 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:06:33,592 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:06:33,592 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:06:33,592 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:06:33,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:06:33,593 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:06:33,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:06:33,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:06:33,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:06:33,757 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:06:33,758 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:06:33,758 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix017_power.opt_rmo.opt.i [2024-06-28 03:06:34,888 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:06:35,114 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:06:35,114 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix017_power.opt_rmo.opt.i [2024-06-28 03:06:35,131 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362e19b97/e67c7e02a5a34252b4ee7d99f1e9abd9/FLAGdf8f8ede2 [2024-06-28 03:06:35,141 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/362e19b97/e67c7e02a5a34252b4ee7d99f1e9abd9 [2024-06-28 03:06:35,143 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:06:35,143 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:06:35,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix017_power.opt_rmo.opt.yml/witness.yml [2024-06-28 03:06:35,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:06:35,315 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:06:35,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:06:35,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:06:35,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:06:35,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:06:35" (1/2) ... [2024-06-28 03:06:35,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b406e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:06:35, skipping insertion in model container [2024-06-28 03:06:35,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:06:35" (1/2) ... [2024-06-28 03:06:35,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7355b1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:06:35, skipping insertion in model container [2024-06-28 03:06:35,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:06:35" (2/2) ... [2024-06-28 03:06:35,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b406e5d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:06:35, skipping insertion in model container [2024-06-28 03:06:35,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:06:35" (2/2) ... [2024-06-28 03:06:35,359 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:06:35,474 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:06:35,475 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] (((((((((((((((((((((((! multithreaded || (x == 0 || x == 1)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (((((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1)) [2024-06-28 03:06:35,476 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((((((! multithreaded || (x == 0 || x == 1)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (((((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1)) [2024-06-28 03:06:35,476 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] (((((((((((((((((((((((! multithreaded || (x == 0 || x == 1)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (((((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1)) [2024-06-28 03:06:35,476 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] (((((((((((((((((((((((! multithreaded || (x == 0 || x == 1)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (((((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1)) [2024-06-28 03:06:35,476 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:06:35,477 INFO L106 edCorrectnessWitness]: ghost_update [L859-L859] multithreaded = 1; [2024-06-28 03:06:35,514 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:06:35,841 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:06:35,850 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 03:06:35,952 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:06:35,978 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:06:35,992 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:06:35 WrapperNode [2024-06-28 03:06:35,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:06:35,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:06:35,993 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:06:35,994 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:06:35,999 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 03:06:35" (1/1) ... [2024-06-28 03:06:36,010 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 03:06:35" (1/1) ... [2024-06-28 03:06:36,035 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 140 [2024-06-28 03:06:36,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:06:36,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:06:36,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:06:36,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:06:36,045 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 03:06:35" (1/1) ... [2024-06-28 03:06:36,045 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 03:06:35" (1/1) ... [2024-06-28 03:06:36,047 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 03:06:35" (1/1) ... [2024-06-28 03:06:36,060 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:06:36,060 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 03:06:35" (1/1) ... [2024-06-28 03:06:36,060 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 03:06:35" (1/1) ... [2024-06-28 03:06:36,068 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 03:06:35" (1/1) ... [2024-06-28 03:06:36,069 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 03:06:35" (1/1) ... [2024-06-28 03:06:36,070 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 03:06:35" (1/1) ... [2024-06-28 03:06:36,072 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 03:06:35" (1/1) ... [2024-06-28 03:06:36,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:06:36,075 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:06:36,075 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:06:36,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:06:36,076 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 03:06:35" (1/1) ... [2024-06-28 03:06:36,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:06:36,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:06:36,098 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 03:06:36,110 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 03:06:36,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:06:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:06:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:06:36,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:06:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:06:36,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:06:36,126 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:06:36,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:06:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:06:36,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:06:36,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:06:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:06:36,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:06:36,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:06:36,129 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 03:06:36,267 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:06:36,270 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:06:36,573 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:06:36,573 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:06:36,707 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:06:36,707 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:06:36,708 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:06:36 BoogieIcfgContainer [2024-06-28 03:06:36,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:06:36,710 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:06:36,710 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:06:36,713 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:06:36,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:06:35" (1/4) ... [2024-06-28 03:06:36,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb469f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:06:36, skipping insertion in model container [2024-06-28 03:06:36,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:06:35" (2/4) ... [2024-06-28 03:06:36,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb469f5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:06:36, skipping insertion in model container [2024-06-28 03:06:36,714 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 03:06:35" (3/4) ... [2024-06-28 03:06:36,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb469f5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:06:36, skipping insertion in model container [2024-06-28 03:06:36,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:06:36" (4/4) ... [2024-06-28 03:06:36,715 INFO L112 eAbstractionObserver]: Analyzing ICFG mix017_power.opt_rmo.opt.i [2024-06-28 03:06:36,727 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:06:36,727 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:06:36,727 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:06:36,773 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:06:36,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 03:06:36,816 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-28 03:06:36,816 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:06:36,818 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 82 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 03:06:36,818 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 03:06:36,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-28 03:06:36,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:06:36,831 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;@65a9d64a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:06:36,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:06:36,834 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:06:36,834 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:06:36,834 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:06:36,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:36,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:06:36,835 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 03:06:36,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:36,875 INFO L85 PathProgramCache]: Analyzing trace with hash 392685785, now seen corresponding path program 1 times [2024-06-28 03:06:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:36,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306896604] [2024-06-28 03:06:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:36,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:37,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:37,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306896604] [2024-06-28 03:06:37,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306896604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:37,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:37,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:06:37,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213591967] [2024-06-28 03:06:37,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:37,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:06:37,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:37,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:06:37,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:06:37,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-06-28 03:06:37,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:37,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:37,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-06-28 03:06:37,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:38,848 INFO L124 PetriNetUnfolderBase]: 5292/7736 cut-off events. [2024-06-28 03:06:38,849 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-28 03:06:38,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15277 conditions, 7736 events. 5292/7736 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 44828 event pairs, 3846 based on Foata normal form. 1/7478 useless extension candidates. Maximal degree in co-relation 15264. Up to 7274 conditions per place. [2024-06-28 03:06:38,894 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 40 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-28 03:06:38,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 223 flow [2024-06-28 03:06:38,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:06:38,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:06:38,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-28 03:06:38,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6602564102564102 [2024-06-28 03:06:38,905 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 103 transitions. [2024-06-28 03:06:38,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 223 flow [2024-06-28 03:06:38,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:06:38,909 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-28 03:06:38,911 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 03:06:38,913 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-28 03:06:38,913 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-28 03:06:38,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:38,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:38,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:38,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:06:38,914 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 03:06:38,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:38,915 INFO L85 PathProgramCache]: Analyzing trace with hash -586052488, now seen corresponding path program 1 times [2024-06-28 03:06:38,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:38,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671655533] [2024-06-28 03:06:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:38,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:39,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:39,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671655533] [2024-06-28 03:06:39,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671655533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:39,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:39,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:06:39,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709316885] [2024-06-28 03:06:39,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:39,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:06:39,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:39,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:06:39,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:06:39,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-28 03:06:39,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:39,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:39,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-28 03:06:39,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:40,404 INFO L124 PetriNetUnfolderBase]: 6187/8777 cut-off events. [2024-06-28 03:06:40,404 INFO L125 PetriNetUnfolderBase]: For 1776/1776 co-relation queries the response was YES. [2024-06-28 03:06:40,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20004 conditions, 8777 events. 6187/8777 cut-off events. For 1776/1776 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 49408 event pairs, 3871 based on Foata normal form. 4/8776 useless extension candidates. Maximal degree in co-relation 19992. Up to 8444 conditions per place. [2024-06-28 03:06:40,446 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 51 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-28 03:06:40,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 317 flow [2024-06-28 03:06:40,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:06:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:06:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-06-28 03:06:40,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-06-28 03:06:40,449 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 132 transitions. [2024-06-28 03:06:40,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 317 flow [2024-06-28 03:06:40,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:06:40,451 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-28 03:06:40,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-28 03:06:40,451 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-28 03:06:40,452 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-28 03:06:40,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:40,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:40,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:40,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:06:40,453 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 03:06:40,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:40,453 INFO L85 PathProgramCache]: Analyzing trace with hash -46613773, now seen corresponding path program 1 times [2024-06-28 03:06:40,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:40,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911652909] [2024-06-28 03:06:40,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:40,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:41,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:41,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911652909] [2024-06-28 03:06:41,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911652909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:41,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:41,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:06:41,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122866439] [2024-06-28 03:06:41,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:41,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:06:41,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:41,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:06:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:06:41,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-28 03:06:41,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:41,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:41,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-28 03:06:41,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:42,475 INFO L124 PetriNetUnfolderBase]: 7856/11057 cut-off events. [2024-06-28 03:06:42,476 INFO L125 PetriNetUnfolderBase]: For 6016/6016 co-relation queries the response was YES. [2024-06-28 03:06:42,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27975 conditions, 11057 events. 7856/11057 cut-off events. For 6016/6016 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 60974 event pairs, 3834 based on Foata normal form. 8/11057 useless extension candidates. Maximal degree in co-relation 27961. Up to 10612 conditions per place. [2024-06-28 03:06:42,523 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 69 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-28 03:06:42,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 94 transitions, 482 flow [2024-06-28 03:06:42,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:06:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:06:42,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-28 03:06:42,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592948717948718 [2024-06-28 03:06:42,526 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 6 states and 185 transitions. [2024-06-28 03:06:42,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 94 transitions, 482 flow [2024-06-28 03:06:42,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 94 transitions, 454 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 03:06:42,528 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 241 flow [2024-06-28 03:06:42,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-06-28 03:06:42,529 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2024-06-28 03:06:42,529 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 241 flow [2024-06-28 03:06:42,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:42,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:42,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:42,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:06:42,530 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 03:06:42,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:42,531 INFO L85 PathProgramCache]: Analyzing trace with hash -510695009, now seen corresponding path program 1 times [2024-06-28 03:06:42,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:42,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689524036] [2024-06-28 03:06:42,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:42,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:43,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:43,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689524036] [2024-06-28 03:06:43,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689524036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:43,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:43,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:06:43,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484838685] [2024-06-28 03:06:43,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:43,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:06:43,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:43,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:06:43,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:06:43,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-28 03:06:43,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:43,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:43,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-28 03:06:43,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:44,380 INFO L124 PetriNetUnfolderBase]: 6688/9741 cut-off events. [2024-06-28 03:06:44,380 INFO L125 PetriNetUnfolderBase]: For 9778/9778 co-relation queries the response was YES. [2024-06-28 03:06:44,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26933 conditions, 9741 events. 6688/9741 cut-off events. For 9778/9778 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 55685 event pairs, 3462 based on Foata normal form. 6/9600 useless extension candidates. Maximal degree in co-relation 26916. Up to 9117 conditions per place. [2024-06-28 03:06:44,431 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 59 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-06-28 03:06:44,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 447 flow [2024-06-28 03:06:44,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:06:44,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:06:44,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-06-28 03:06:44,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230769230769231 [2024-06-28 03:06:44,433 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 241 flow. Second operand 5 states and 136 transitions. [2024-06-28 03:06:44,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 447 flow [2024-06-28 03:06:44,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 409 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:06:44,438 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 264 flow [2024-06-28 03:06:44,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-06-28 03:06:44,439 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-06-28 03:06:44,439 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 264 flow [2024-06-28 03:06:44,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:44,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:44,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:44,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:06:44,440 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 03:06:44,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1112923072, now seen corresponding path program 1 times [2024-06-28 03:06:44,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:44,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456631104] [2024-06-28 03:06:44,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:44,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:45,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:45,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:45,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456631104] [2024-06-28 03:06:45,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456631104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:45,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:45,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:06:45,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415333130] [2024-06-28 03:06:45,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:45,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:06:45,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:45,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:06:45,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:06:45,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:06:45,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:45,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:45,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:06:45,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:46,551 INFO L124 PetriNetUnfolderBase]: 7882/11135 cut-off events. [2024-06-28 03:06:46,552 INFO L125 PetriNetUnfolderBase]: For 18001/18001 co-relation queries the response was YES. [2024-06-28 03:06:46,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33838 conditions, 11135 events. 7882/11135 cut-off events. For 18001/18001 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 61464 event pairs, 3908 based on Foata normal form. 6/11135 useless extension candidates. Maximal degree in co-relation 33819. Up to 10604 conditions per place. [2024-06-28 03:06:46,627 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 72 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-28 03:06:46,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 612 flow [2024-06-28 03:06:46,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:06:46,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:06:46,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-06-28 03:06:46,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5352564102564102 [2024-06-28 03:06:46,629 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 264 flow. Second operand 6 states and 167 transitions. [2024-06-28 03:06:46,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 612 flow [2024-06-28 03:06:46,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 101 transitions, 583 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:06:46,635 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 352 flow [2024-06-28 03:06:46,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-06-28 03:06:46,635 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2024-06-28 03:06:46,636 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 352 flow [2024-06-28 03:06:46,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:46,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:46,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:46,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:06:46,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:06:46,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:46,637 INFO L85 PathProgramCache]: Analyzing trace with hash -578707360, now seen corresponding path program 2 times [2024-06-28 03:06:46,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:46,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199722438] [2024-06-28 03:06:46,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:46,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:47,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:47,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199722438] [2024-06-28 03:06:47,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199722438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:47,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:47,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:06:47,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782005574] [2024-06-28 03:06:47,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:47,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:06:47,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:47,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:06:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:06:47,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:06:47,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 352 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:47,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:47,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:06:47,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:48,533 INFO L124 PetriNetUnfolderBase]: 7864/11115 cut-off events. [2024-06-28 03:06:48,533 INFO L125 PetriNetUnfolderBase]: For 26496/26504 co-relation queries the response was YES. [2024-06-28 03:06:48,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36613 conditions, 11115 events. 7864/11115 cut-off events. For 26496/26504 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 61520 event pairs, 3904 based on Foata normal form. 12/11122 useless extension candidates. Maximal degree in co-relation 36593. Up to 10589 conditions per place. [2024-06-28 03:06:48,677 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 65 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2024-06-28 03:06:48,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 94 transitions, 590 flow [2024-06-28 03:06:48,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:06:48,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:06:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-28 03:06:48,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-06-28 03:06:48,679 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 352 flow. Second operand 6 states and 160 transitions. [2024-06-28 03:06:48,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 94 transitions, 590 flow [2024-06-28 03:06:48,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 94 transitions, 544 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 03:06:48,693 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 359 flow [2024-06-28 03:06:48,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=64, 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=359, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-06-28 03:06:48,695 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-28 03:06:48,695 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 359 flow [2024-06-28 03:06:48,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:48,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:48,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:48,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:06:48,696 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 03:06:48,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:48,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1904994256, now seen corresponding path program 1 times [2024-06-28 03:06:48,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:48,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172869813] [2024-06-28 03:06:48,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:48,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:49,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:49,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:49,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172869813] [2024-06-28 03:06:49,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172869813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:49,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:49,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:06:49,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135176800] [2024-06-28 03:06:49,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:49,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:06:49,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:49,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:06:49,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:06:49,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:06:49,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 359 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:49,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:49,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:06:49,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:50,848 INFO L124 PetriNetUnfolderBase]: 7977/11291 cut-off events. [2024-06-28 03:06:50,848 INFO L125 PetriNetUnfolderBase]: For 30625/30629 co-relation queries the response was YES. [2024-06-28 03:06:50,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37636 conditions, 11291 events. 7977/11291 cut-off events. For 30625/30629 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 62552 event pairs, 4108 based on Foata normal form. 10/11298 useless extension candidates. Maximal degree in co-relation 37614. Up to 10759 conditions per place. [2024-06-28 03:06:50,904 INFO L140 encePairwiseOnDemand]: 37/52 looper letters, 88 selfloop transitions, 32 changer transitions 0/128 dead transitions. [2024-06-28 03:06:50,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 128 transitions, 822 flow [2024-06-28 03:06:50,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:06:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:06:50,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-28 03:06:50,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144230769230769 [2024-06-28 03:06:50,906 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 359 flow. Second operand 8 states and 214 transitions. [2024-06-28 03:06:50,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 128 transitions, 822 flow [2024-06-28 03:06:50,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 128 transitions, 748 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:06:50,924 INFO L231 Difference]: Finished difference. Result has 74 places, 87 transitions, 511 flow [2024-06-28 03:06:50,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=511, PETRI_PLACES=74, PETRI_TRANSITIONS=87} [2024-06-28 03:06:50,925 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2024-06-28 03:06:50,925 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 87 transitions, 511 flow [2024-06-28 03:06:50,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:50,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:50,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:50,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:06:50,926 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 03:06:50,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:50,926 INFO L85 PathProgramCache]: Analyzing trace with hash -960430702, now seen corresponding path program 2 times [2024-06-28 03:06:50,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:50,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476197099] [2024-06-28 03:06:50,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:50,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:51,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:51,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476197099] [2024-06-28 03:06:51,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476197099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:51,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:51,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:06:51,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318366143] [2024-06-28 03:06:51,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:51,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:06:51,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:51,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:06:51,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:06:51,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:06:51,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 511 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:51,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:51,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:06:51,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:53,264 INFO L124 PetriNetUnfolderBase]: 8021/11368 cut-off events. [2024-06-28 03:06:53,265 INFO L125 PetriNetUnfolderBase]: For 41769/41777 co-relation queries the response was YES. [2024-06-28 03:06:53,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40962 conditions, 11368 events. 8021/11368 cut-off events. For 41769/41777 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 63003 event pairs, 4014 based on Foata normal form. 14/11372 useless extension candidates. Maximal degree in co-relation 40938. Up to 10781 conditions per place. [2024-06-28 03:06:53,367 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 88 selfloop transitions, 34 changer transitions 0/130 dead transitions. [2024-06-28 03:06:53,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 130 transitions, 927 flow [2024-06-28 03:06:53,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:06:53,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:06:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 03:06:53,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2024-06-28 03:06:53,371 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 511 flow. Second operand 7 states and 188 transitions. [2024-06-28 03:06:53,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 130 transitions, 927 flow [2024-06-28 03:06:53,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 130 transitions, 869 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 03:06:53,395 INFO L231 Difference]: Finished difference. Result has 78 places, 91 transitions, 588 flow [2024-06-28 03:06:53,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=588, PETRI_PLACES=78, PETRI_TRANSITIONS=91} [2024-06-28 03:06:53,398 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2024-06-28 03:06:53,398 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 91 transitions, 588 flow [2024-06-28 03:06:53,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:53,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:53,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:53,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:06:53,399 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:06:53,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:53,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1345926288, now seen corresponding path program 3 times [2024-06-28 03:06:53,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:53,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994738566] [2024-06-28 03:06:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:53,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:54,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:54,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994738566] [2024-06-28 03:06:54,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994738566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:54,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:54,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:06:54,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317820970] [2024-06-28 03:06:54,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:54,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:06:54,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:54,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:06:54,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:06:54,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:06:54,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 91 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:54,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:54,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:06:54,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:55,927 INFO L124 PetriNetUnfolderBase]: 8065/11445 cut-off events. [2024-06-28 03:06:55,927 INFO L125 PetriNetUnfolderBase]: For 54762/54764 co-relation queries the response was YES. [2024-06-28 03:06:55,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44156 conditions, 11445 events. 8065/11445 cut-off events. For 54762/54764 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 63460 event pairs, 3660 based on Foata normal form. 6/11445 useless extension candidates. Maximal degree in co-relation 44131. Up to 10650 conditions per place. [2024-06-28 03:06:55,985 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 81 selfloop transitions, 50 changer transitions 0/139 dead transitions. [2024-06-28 03:06:55,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 139 transitions, 1116 flow [2024-06-28 03:06:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:06:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:06:55,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-28 03:06:55,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-28 03:06:55,987 INFO L175 Difference]: Start difference. First operand has 78 places, 91 transitions, 588 flow. Second operand 7 states and 195 transitions. [2024-06-28 03:06:55,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 139 transitions, 1116 flow [2024-06-28 03:06:56,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 139 transitions, 997 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 03:06:56,012 INFO L231 Difference]: Finished difference. Result has 80 places, 99 transitions, 694 flow [2024-06-28 03:06:56,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=694, PETRI_PLACES=80, PETRI_TRANSITIONS=99} [2024-06-28 03:06:56,013 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-06-28 03:06:56,013 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 99 transitions, 694 flow [2024-06-28 03:06:56,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:56,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:56,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:56,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:06:56,013 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:06:56,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:56,014 INFO L85 PathProgramCache]: Analyzing trace with hash -747545332, now seen corresponding path program 4 times [2024-06-28 03:06:56,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:56,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521585868] [2024-06-28 03:06:56,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:56,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:56,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:56,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521585868] [2024-06-28 03:06:56,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521585868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:56,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:56,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:06:56,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567606378] [2024-06-28 03:06:56,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:56,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:06:56,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:06:56,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:06:57,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:06:57,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 99 transitions, 694 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:57,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:06:57,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:06:57,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:06:58,449 INFO L124 PetriNetUnfolderBase]: 8047/11423 cut-off events. [2024-06-28 03:06:58,449 INFO L125 PetriNetUnfolderBase]: For 55666/55671 co-relation queries the response was YES. [2024-06-28 03:06:58,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44021 conditions, 11423 events. 8047/11423 cut-off events. For 55666/55671 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 63347 event pairs, 3668 based on Foata normal form. 6/11417 useless extension candidates. Maximal degree in co-relation 43995. Up to 10635 conditions per place. [2024-06-28 03:06:58,520 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 75 selfloop transitions, 50 changer transitions 0/133 dead transitions. [2024-06-28 03:06:58,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 133 transitions, 1048 flow [2024-06-28 03:06:58,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:06:58,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:06:58,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 03:06:58,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2024-06-28 03:06:58,522 INFO L175 Difference]: Start difference. First operand has 80 places, 99 transitions, 694 flow. Second operand 7 states and 188 transitions. [2024-06-28 03:06:58,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 133 transitions, 1048 flow [2024-06-28 03:06:58,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 133 transitions, 965 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 03:06:58,559 INFO L231 Difference]: Finished difference. Result has 84 places, 99 transitions, 722 flow [2024-06-28 03:06:58,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=722, PETRI_PLACES=84, PETRI_TRANSITIONS=99} [2024-06-28 03:06:58,560 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 29 predicate places. [2024-06-28 03:06:58,560 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 99 transitions, 722 flow [2024-06-28 03:06:58,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:06:58,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:06:58,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:06:58,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:06:58,561 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:06:58,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:06:58,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1339250934, now seen corresponding path program 1 times [2024-06-28 03:06:58,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:06:58,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217828061] [2024-06-28 03:06:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:06:58,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:06:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:06:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:06:59,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:06:59,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217828061] [2024-06-28 03:06:59,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217828061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:06:59,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:06:59,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:06:59,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455127949] [2024-06-28 03:06:59,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:06:59,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:06:59,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:06:59,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:06:59,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:07:00,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-28 03:07:00,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 99 transitions, 722 flow. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:00,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:00,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-28 03:07:00,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:01,480 INFO L124 PetriNetUnfolderBase]: 6882/9982 cut-off events. [2024-06-28 03:07:01,481 INFO L125 PetriNetUnfolderBase]: For 53268/53270 co-relation queries the response was YES. [2024-06-28 03:07:01,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39309 conditions, 9982 events. 6882/9982 cut-off events. For 53268/53270 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 56849 event pairs, 3125 based on Foata normal form. 6/9871 useless extension candidates. Maximal degree in co-relation 39281. Up to 9354 conditions per place. [2024-06-28 03:07:01,531 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 111 selfloop transitions, 19 changer transitions 0/139 dead transitions. [2024-06-28 03:07:01,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 139 transitions, 1156 flow [2024-06-28 03:07:01,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:01,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:01,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 03:07:01,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879807692307692 [2024-06-28 03:07:01,533 INFO L175 Difference]: Start difference. First operand has 84 places, 99 transitions, 722 flow. Second operand 8 states and 203 transitions. [2024-06-28 03:07:01,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 139 transitions, 1156 flow [2024-06-28 03:07:01,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 139 transitions, 1014 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:07:01,554 INFO L231 Difference]: Finished difference. Result has 88 places, 108 transitions, 724 flow [2024-06-28 03:07:01,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=88, PETRI_TRANSITIONS=108} [2024-06-28 03:07:01,555 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 33 predicate places. [2024-06-28 03:07:01,555 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 108 transitions, 724 flow [2024-06-28 03:07:01,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 8 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:01,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:01,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:01,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:07:01,555 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 03:07:01,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:01,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1918396734, now seen corresponding path program 1 times [2024-06-28 03:07:01,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:01,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819180994] [2024-06-28 03:07:01,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:01,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:02,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:02,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819180994] [2024-06-28 03:07:02,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819180994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:02,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:02,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:07:02,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912095673] [2024-06-28 03:07:02,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:02,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:07:02,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:02,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:07:02,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:07:02,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-28 03:07:02,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 108 transitions, 724 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:02,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:02,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-28 03:07:02,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:03,426 INFO L124 PetriNetUnfolderBase]: 6461/9936 cut-off events. [2024-06-28 03:07:03,426 INFO L125 PetriNetUnfolderBase]: For 61415/61432 co-relation queries the response was YES. [2024-06-28 03:07:03,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40298 conditions, 9936 events. 6461/9936 cut-off events. For 61415/61432 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 61579 event pairs, 3176 based on Foata normal form. 17/9903 useless extension candidates. Maximal degree in co-relation 40267. Up to 8823 conditions per place. [2024-06-28 03:07:03,500 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 100 selfloop transitions, 11 changer transitions 0/125 dead transitions. [2024-06-28 03:07:03,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 125 transitions, 1022 flow [2024-06-28 03:07:03,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:07:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:07:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-06-28 03:07:03,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-06-28 03:07:03,502 INFO L175 Difference]: Start difference. First operand has 88 places, 108 transitions, 724 flow. Second operand 5 states and 135 transitions. [2024-06-28 03:07:03,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 125 transitions, 1022 flow [2024-06-28 03:07:03,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 125 transitions, 958 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 03:07:03,546 INFO L231 Difference]: Finished difference. Result has 89 places, 112 transitions, 735 flow [2024-06-28 03:07:03,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=735, PETRI_PLACES=89, PETRI_TRANSITIONS=112} [2024-06-28 03:07:03,547 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2024-06-28 03:07:03,547 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 112 transitions, 735 flow [2024-06-28 03:07:03,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:03,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:03,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:03,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:07:03,548 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:07:03,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:03,548 INFO L85 PathProgramCache]: Analyzing trace with hash 443992499, now seen corresponding path program 1 times [2024-06-28 03:07:03,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:03,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420481650] [2024-06-28 03:07:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:03,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:04,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:04,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:04,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420481650] [2024-06-28 03:07:04,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420481650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:04,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:04,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:04,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214018255] [2024-06-28 03:07:04,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:04,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:04,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:04,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:04,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:04,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:07:04,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 112 transitions, 735 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:04,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:04,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:07:04,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:06,398 INFO L124 PetriNetUnfolderBase]: 8386/11988 cut-off events. [2024-06-28 03:07:06,399 INFO L125 PetriNetUnfolderBase]: For 95438/95446 co-relation queries the response was YES. [2024-06-28 03:07:06,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53000 conditions, 11988 events. 8386/11988 cut-off events. For 95438/95446 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 67876 event pairs, 3217 based on Foata normal form. 32/11996 useless extension candidates. Maximal degree in co-relation 52968. Up to 10819 conditions per place. [2024-06-28 03:07:06,492 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 130 selfloop transitions, 42 changer transitions 0/180 dead transitions. [2024-06-28 03:07:06,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 180 transitions, 1441 flow [2024-06-28 03:07:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:06,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-28 03:07:06,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 03:07:06,496 INFO L175 Difference]: Start difference. First operand has 89 places, 112 transitions, 735 flow. Second operand 9 states and 247 transitions. [2024-06-28 03:07:06,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 180 transitions, 1441 flow [2024-06-28 03:07:06,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 180 transitions, 1396 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 03:07:06,571 INFO L231 Difference]: Finished difference. Result has 95 places, 116 transitions, 863 flow [2024-06-28 03:07:06,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=863, PETRI_PLACES=95, PETRI_TRANSITIONS=116} [2024-06-28 03:07:06,571 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2024-06-28 03:07:06,571 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 116 transitions, 863 flow [2024-06-28 03:07:06,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:06,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:06,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:06,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:07:06,572 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:07:06,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2053233573, now seen corresponding path program 2 times [2024-06-28 03:07:06,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:06,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971271776] [2024-06-28 03:07:06,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:06,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:07,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:07,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971271776] [2024-06-28 03:07:07,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971271776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:07,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:07,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:07,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60942705] [2024-06-28 03:07:07,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:07,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:07,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:07,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:07,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:07,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:07:07,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 116 transitions, 863 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:07,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:07,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:07:07,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:09,222 INFO L124 PetriNetUnfolderBase]: 8317/11903 cut-off events. [2024-06-28 03:07:09,222 INFO L125 PetriNetUnfolderBase]: For 108662/108670 co-relation queries the response was YES. [2024-06-28 03:07:09,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54204 conditions, 11903 events. 8317/11903 cut-off events. For 108662/108670 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 67231 event pairs, 3779 based on Foata normal form. 38/11931 useless extension candidates. Maximal degree in co-relation 54171. Up to 11001 conditions per place. [2024-06-28 03:07:09,317 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 121 selfloop transitions, 37 changer transitions 0/166 dead transitions. [2024-06-28 03:07:09,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 166 transitions, 1355 flow [2024-06-28 03:07:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:09,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-28 03:07:09,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-06-28 03:07:09,319 INFO L175 Difference]: Start difference. First operand has 95 places, 116 transitions, 863 flow. Second operand 8 states and 216 transitions. [2024-06-28 03:07:09,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 166 transitions, 1355 flow [2024-06-28 03:07:09,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 166 transitions, 1284 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 03:07:09,396 INFO L231 Difference]: Finished difference. Result has 98 places, 116 transitions, 878 flow [2024-06-28 03:07:09,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=878, PETRI_PLACES=98, PETRI_TRANSITIONS=116} [2024-06-28 03:07:09,397 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2024-06-28 03:07:09,397 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 116 transitions, 878 flow [2024-06-28 03:07:09,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:09,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:09,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:09,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:07:09,398 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:07:09,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:09,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1359187991, now seen corresponding path program 3 times [2024-06-28 03:07:09,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:09,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815633842] [2024-06-28 03:07:09,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:09,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:10,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:10,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815633842] [2024-06-28 03:07:10,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815633842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:10,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:10,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:10,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614574066] [2024-06-28 03:07:10,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:10,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:10,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:10,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:10,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:10,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:07:10,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 116 transitions, 878 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:10,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:10,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:07:10,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:12,135 INFO L124 PetriNetUnfolderBase]: 8481/12150 cut-off events. [2024-06-28 03:07:12,135 INFO L125 PetriNetUnfolderBase]: For 121143/121148 co-relation queries the response was YES. [2024-06-28 03:07:12,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56305 conditions, 12150 events. 8481/12150 cut-off events. For 121143/121148 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 68812 event pairs, 3517 based on Foata normal form. 30/12175 useless extension candidates. Maximal degree in co-relation 56270. Up to 11087 conditions per place. [2024-06-28 03:07:12,227 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 101 selfloop transitions, 56 changer transitions 0/165 dead transitions. [2024-06-28 03:07:12,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 165 transitions, 1394 flow [2024-06-28 03:07:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:12,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-06-28 03:07:12,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288461538461539 [2024-06-28 03:07:12,229 INFO L175 Difference]: Start difference. First operand has 98 places, 116 transitions, 878 flow. Second operand 8 states and 220 transitions. [2024-06-28 03:07:12,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 165 transitions, 1394 flow [2024-06-28 03:07:12,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 165 transitions, 1310 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 03:07:12,311 INFO L231 Difference]: Finished difference. Result has 99 places, 118 transitions, 962 flow [2024-06-28 03:07:12,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=962, PETRI_PLACES=99, PETRI_TRANSITIONS=118} [2024-06-28 03:07:12,311 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 44 predicate places. [2024-06-28 03:07:12,312 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 118 transitions, 962 flow [2024-06-28 03:07:12,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:12,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:12,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:12,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:07:12,312 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:07:12,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:12,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2057886921, now seen corresponding path program 1 times [2024-06-28 03:07:12,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:12,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023765288] [2024-06-28 03:07:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:12,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:13,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:13,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023765288] [2024-06-28 03:07:13,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023765288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:13,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:13,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:13,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860234222] [2024-06-28 03:07:13,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:13,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:13,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:13,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:13,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:13,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:07:13,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 118 transitions, 962 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:13,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:13,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:07:13,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:15,415 INFO L124 PetriNetUnfolderBase]: 8517/12170 cut-off events. [2024-06-28 03:07:15,415 INFO L125 PetriNetUnfolderBase]: For 137567/137578 co-relation queries the response was YES. [2024-06-28 03:07:15,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58318 conditions, 12170 events. 8517/12170 cut-off events. For 137567/137578 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 68738 event pairs, 3571 based on Foata normal form. 14/12177 useless extension candidates. Maximal degree in co-relation 58282. Up to 11497 conditions per place. [2024-06-28 03:07:15,499 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 125 selfloop transitions, 36 changer transitions 0/169 dead transitions. [2024-06-28 03:07:15,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 169 transitions, 1509 flow [2024-06-28 03:07:15,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:15,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 03:07:15,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120192307692307 [2024-06-28 03:07:15,501 INFO L175 Difference]: Start difference. First operand has 99 places, 118 transitions, 962 flow. Second operand 8 states and 213 transitions. [2024-06-28 03:07:15,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 169 transitions, 1509 flow [2024-06-28 03:07:15,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 169 transitions, 1377 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:07:15,583 INFO L231 Difference]: Finished difference. Result has 102 places, 125 transitions, 1005 flow [2024-06-28 03:07:15,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1005, PETRI_PLACES=102, PETRI_TRANSITIONS=125} [2024-06-28 03:07:15,583 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 47 predicate places. [2024-06-28 03:07:15,583 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 125 transitions, 1005 flow [2024-06-28 03:07:15,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:15,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:15,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:15,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:07:15,585 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 03:07:15,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:15,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1026891805, now seen corresponding path program 1 times [2024-06-28 03:07:15,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:15,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104769356] [2024-06-28 03:07:15,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:15,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:16,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:16,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104769356] [2024-06-28 03:07:16,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104769356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:16,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:16,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:07:16,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588323799] [2024-06-28 03:07:16,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:16,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:07:16,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:16,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:07:16,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:07:16,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-28 03:07:16,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 125 transitions, 1005 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:16,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:16,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-28 03:07:16,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:17,616 INFO L124 PetriNetUnfolderBase]: 8077/11713 cut-off events. [2024-06-28 03:07:17,616 INFO L125 PetriNetUnfolderBase]: For 154206/154226 co-relation queries the response was YES. [2024-06-28 03:07:17,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58755 conditions, 11713 events. 8077/11713 cut-off events. For 154206/154226 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 68053 event pairs, 3564 based on Foata normal form. 22/11703 useless extension candidates. Maximal degree in co-relation 58717. Up to 10934 conditions per place. [2024-06-28 03:07:17,714 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 107 selfloop transitions, 29 changer transitions 0/151 dead transitions. [2024-06-28 03:07:17,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 151 transitions, 1393 flow [2024-06-28 03:07:17,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:07:17,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:07:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-28 03:07:17,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-06-28 03:07:17,732 INFO L175 Difference]: Start difference. First operand has 102 places, 125 transitions, 1005 flow. Second operand 6 states and 160 transitions. [2024-06-28 03:07:17,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 151 transitions, 1393 flow [2024-06-28 03:07:17,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 151 transitions, 1281 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 03:07:17,859 INFO L231 Difference]: Finished difference. Result has 103 places, 129 transitions, 1020 flow [2024-06-28 03:07:17,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1020, PETRI_PLACES=103, PETRI_TRANSITIONS=129} [2024-06-28 03:07:17,861 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 48 predicate places. [2024-06-28 03:07:17,861 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 129 transitions, 1020 flow [2024-06-28 03:07:17,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:17,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:17,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:17,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:07:17,861 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:07:17,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:17,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1233428113, now seen corresponding path program 4 times [2024-06-28 03:07:17,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:17,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746875896] [2024-06-28 03:07:17,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:17,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:19,055 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 03:07:19,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:19,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746875896] [2024-06-28 03:07:19,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746875896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:19,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:19,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:19,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137998510] [2024-06-28 03:07:19,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:19,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:19,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:19,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:19,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:19,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:07:19,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 129 transitions, 1020 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:19,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:19,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:07:19,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:20,925 INFO L124 PetriNetUnfolderBase]: 8611/12309 cut-off events. [2024-06-28 03:07:20,926 INFO L125 PetriNetUnfolderBase]: For 176865/176870 co-relation queries the response was YES. [2024-06-28 03:07:20,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63939 conditions, 12309 events. 8611/12309 cut-off events. For 176865/176870 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 69394 event pairs, 3461 based on Foata normal form. 30/12327 useless extension candidates. Maximal degree in co-relation 63900. Up to 11279 conditions per place. [2024-06-28 03:07:21,032 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 111 selfloop transitions, 57 changer transitions 0/176 dead transitions. [2024-06-28 03:07:21,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 176 transitions, 1572 flow [2024-06-28 03:07:21,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:21,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-28 03:07:21,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-06-28 03:07:21,034 INFO L175 Difference]: Start difference. First operand has 103 places, 129 transitions, 1020 flow. Second operand 8 states and 216 transitions. [2024-06-28 03:07:21,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 176 transitions, 1572 flow [2024-06-28 03:07:21,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 176 transitions, 1487 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 03:07:21,163 INFO L231 Difference]: Finished difference. Result has 107 places, 131 transitions, 1115 flow [2024-06-28 03:07:21,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1115, PETRI_PLACES=107, PETRI_TRANSITIONS=131} [2024-06-28 03:07:21,163 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2024-06-28 03:07:21,164 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 131 transitions, 1115 flow [2024-06-28 03:07:21,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:21,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:21,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:21,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:07:21,164 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:07:21,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:21,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1233612811, now seen corresponding path program 2 times [2024-06-28 03:07:21,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:21,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138517749] [2024-06-28 03:07:21,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:21,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:22,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:22,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138517749] [2024-06-28 03:07:22,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138517749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:22,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:22,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:22,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167627550] [2024-06-28 03:07:22,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:22,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:22,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:22,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:22,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:22,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:07:22,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 131 transitions, 1115 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:22,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:22,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:07:22,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:24,024 INFO L124 PetriNetUnfolderBase]: 8669/12443 cut-off events. [2024-06-28 03:07:24,024 INFO L125 PetriNetUnfolderBase]: For 196647/196662 co-relation queries the response was YES. [2024-06-28 03:07:24,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66343 conditions, 12443 events. 8669/12443 cut-off events. For 196647/196662 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 70796 event pairs, 3599 based on Foata normal form. 18/12455 useless extension candidates. Maximal degree in co-relation 66303. Up to 11712 conditions per place. [2024-06-28 03:07:24,141 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 133 selfloop transitions, 39 changer transitions 0/180 dead transitions. [2024-06-28 03:07:24,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 180 transitions, 1696 flow [2024-06-28 03:07:24,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:24,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 03:07:24,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048076923076923 [2024-06-28 03:07:24,158 INFO L175 Difference]: Start difference. First operand has 107 places, 131 transitions, 1115 flow. Second operand 8 states and 210 transitions. [2024-06-28 03:07:24,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 180 transitions, 1696 flow [2024-06-28 03:07:24,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 180 transitions, 1552 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:07:24,293 INFO L231 Difference]: Finished difference. Result has 110 places, 139 transitions, 1175 flow [2024-06-28 03:07:24,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1175, PETRI_PLACES=110, PETRI_TRANSITIONS=139} [2024-06-28 03:07:24,294 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 55 predicate places. [2024-06-28 03:07:24,294 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 139 transitions, 1175 flow [2024-06-28 03:07:24,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:24,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:24,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:24,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:07:24,295 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:07:24,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:24,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1461513961, now seen corresponding path program 3 times [2024-06-28 03:07:24,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:24,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996828848] [2024-06-28 03:07:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:24,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:25,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:25,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996828848] [2024-06-28 03:07:25,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996828848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:25,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:25,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:25,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186825294] [2024-06-28 03:07:25,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:25,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:25,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:25,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:25,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:25,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:07:25,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 139 transitions, 1175 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:25,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:25,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:07:25,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:27,209 INFO L124 PetriNetUnfolderBase]: 8705/12495 cut-off events. [2024-06-28 03:07:27,209 INFO L125 PetriNetUnfolderBase]: For 217967/217982 co-relation queries the response was YES. [2024-06-28 03:07:27,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68889 conditions, 12495 events. 8705/12495 cut-off events. For 217967/217982 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 71147 event pairs, 3607 based on Foata normal form. 18/12507 useless extension candidates. Maximal degree in co-relation 68847. Up to 11764 conditions per place. [2024-06-28 03:07:27,307 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 135 selfloop transitions, 43 changer transitions 0/186 dead transitions. [2024-06-28 03:07:27,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 186 transitions, 1763 flow [2024-06-28 03:07:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:27,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:27,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 03:07:27,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024038461538461 [2024-06-28 03:07:27,309 INFO L175 Difference]: Start difference. First operand has 110 places, 139 transitions, 1175 flow. Second operand 8 states and 209 transitions. [2024-06-28 03:07:27,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 186 transitions, 1763 flow [2024-06-28 03:07:27,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 186 transitions, 1625 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:07:27,442 INFO L231 Difference]: Finished difference. Result has 113 places, 145 transitions, 1235 flow [2024-06-28 03:07:27,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1235, PETRI_PLACES=113, PETRI_TRANSITIONS=145} [2024-06-28 03:07:27,443 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-06-28 03:07:27,443 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 145 transitions, 1235 flow [2024-06-28 03:07:27,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:27,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:27,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:27,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:07:27,443 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:07:27,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1470084841, now seen corresponding path program 4 times [2024-06-28 03:07:27,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:27,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302458547] [2024-06-28 03:07:27,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:27,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:28,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:28,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302458547] [2024-06-28 03:07:28,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302458547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:28,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:28,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:07:28,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313375943] [2024-06-28 03:07:28,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:28,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:07:28,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:28,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:07:28,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:07:28,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:07:28,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 145 transitions, 1235 flow. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:28,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:28,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:07:28,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:30,260 INFO L124 PetriNetUnfolderBase]: 8690/12474 cut-off events. [2024-06-28 03:07:30,260 INFO L125 PetriNetUnfolderBase]: For 239895/239910 co-relation queries the response was YES. [2024-06-28 03:07:30,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70597 conditions, 12474 events. 8690/12474 cut-off events. For 239895/239910 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 70942 event pairs, 3357 based on Foata normal form. 18/12486 useless extension candidates. Maximal degree in co-relation 70554. Up to 11615 conditions per place. [2024-06-28 03:07:30,348 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 128 selfloop transitions, 54 changer transitions 0/190 dead transitions. [2024-06-28 03:07:30,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 190 transitions, 1811 flow [2024-06-28 03:07:30,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:30,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:30,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 03:07:30,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048076923076923 [2024-06-28 03:07:30,351 INFO L175 Difference]: Start difference. First operand has 113 places, 145 transitions, 1235 flow. Second operand 8 states and 210 transitions. [2024-06-28 03:07:30,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 190 transitions, 1811 flow [2024-06-28 03:07:30,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 190 transitions, 1686 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 03:07:30,466 INFO L231 Difference]: Finished difference. Result has 117 places, 148 transitions, 1308 flow [2024-06-28 03:07:30,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1308, PETRI_PLACES=117, PETRI_TRANSITIONS=148} [2024-06-28 03:07:30,466 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 62 predicate places. [2024-06-28 03:07:30,466 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 148 transitions, 1308 flow [2024-06-28 03:07:30,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 9 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:30,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:30,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:30,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:07:30,467 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 03:07:30,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:30,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1038319645, now seen corresponding path program 2 times [2024-06-28 03:07:30,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:30,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184375986] [2024-06-28 03:07:30,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:30,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:31,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:31,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184375986] [2024-06-28 03:07:31,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184375986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:31,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:31,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:07:31,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362117133] [2024-06-28 03:07:31,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:31,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:07:31,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:31,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:07:31,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:07:31,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-28 03:07:31,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 148 transitions, 1308 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:31,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:31,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-28 03:07:31,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:32,584 INFO L124 PetriNetUnfolderBase]: 8199/11925 cut-off events. [2024-06-28 03:07:32,585 INFO L125 PetriNetUnfolderBase]: For 257635/257650 co-relation queries the response was YES. [2024-06-28 03:07:32,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69079 conditions, 11925 events. 8199/11925 cut-off events. For 257635/257650 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 69519 event pairs, 3550 based on Foata normal form. 16/11902 useless extension candidates. Maximal degree in co-relation 69035. Up to 11085 conditions per place. [2024-06-28 03:07:32,694 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 112 selfloop transitions, 38 changer transitions 0/170 dead transitions. [2024-06-28 03:07:32,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 170 transitions, 1733 flow [2024-06-28 03:07:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:07:32,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:07:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 03:07:32,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47527472527472525 [2024-06-28 03:07:32,696 INFO L175 Difference]: Start difference. First operand has 117 places, 148 transitions, 1308 flow. Second operand 7 states and 173 transitions. [2024-06-28 03:07:32,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 170 transitions, 1733 flow [2024-06-28 03:07:32,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 170 transitions, 1561 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 03:07:32,835 INFO L231 Difference]: Finished difference. Result has 118 places, 153 transitions, 1302 flow [2024-06-28 03:07:32,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1302, PETRI_PLACES=118, PETRI_TRANSITIONS=153} [2024-06-28 03:07:32,836 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 63 predicate places. [2024-06-28 03:07:32,836 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 153 transitions, 1302 flow [2024-06-28 03:07:32,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:32,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:32,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:32,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:07:32,836 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 03:07:32,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:32,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1032611677, now seen corresponding path program 1 times [2024-06-28 03:07:32,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:32,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514717408] [2024-06-28 03:07:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:32,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:33,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:33,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:33,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514717408] [2024-06-28 03:07:33,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514717408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:33,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:33,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:07:33,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136129775] [2024-06-28 03:07:33,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:33,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:07:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:33,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:07:33,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:07:33,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-28 03:07:33,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 153 transitions, 1302 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:33,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:33,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-28 03:07:33,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:34,856 INFO L124 PetriNetUnfolderBase]: 7558/11090 cut-off events. [2024-06-28 03:07:34,857 INFO L125 PetriNetUnfolderBase]: For 242963/242967 co-relation queries the response was YES. [2024-06-28 03:07:34,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66129 conditions, 11090 events. 7558/11090 cut-off events. For 242963/242967 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 64955 event pairs, 3259 based on Foata normal form. 5/11031 useless extension candidates. Maximal degree in co-relation 66084. Up to 10381 conditions per place. [2024-06-28 03:07:34,972 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 154 selfloop transitions, 15 changer transitions 0/178 dead transitions. [2024-06-28 03:07:34,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 178 transitions, 1776 flow [2024-06-28 03:07:34,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:07:34,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:07:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 03:07:34,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2024-06-28 03:07:34,973 INFO L175 Difference]: Start difference. First operand has 118 places, 153 transitions, 1302 flow. Second operand 6 states and 158 transitions. [2024-06-28 03:07:34,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 178 transitions, 1776 flow [2024-06-28 03:07:35,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 178 transitions, 1686 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 03:07:35,167 INFO L231 Difference]: Finished difference. Result has 121 places, 157 transitions, 1325 flow [2024-06-28 03:07:35,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1325, PETRI_PLACES=121, PETRI_TRANSITIONS=157} [2024-06-28 03:07:35,168 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 66 predicate places. [2024-06-28 03:07:35,168 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 157 transitions, 1325 flow [2024-06-28 03:07:35,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:35,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:35,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:35,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:07:35,169 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 03:07:35,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:35,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1038325597, now seen corresponding path program 2 times [2024-06-28 03:07:35,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:35,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109931170] [2024-06-28 03:07:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:35,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:35,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:35,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109931170] [2024-06-28 03:07:35,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109931170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:35,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:35,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:07:35,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64247748] [2024-06-28 03:07:35,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:35,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:07:35,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:35,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:07:35,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:07:35,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-28 03:07:35,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 157 transitions, 1325 flow. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:35,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:35,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-28 03:07:35,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:37,257 INFO L124 PetriNetUnfolderBase]: 7567/11163 cut-off events. [2024-06-28 03:07:37,258 INFO L125 PetriNetUnfolderBase]: For 261327/261336 co-relation queries the response was YES. [2024-06-28 03:07:37,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68426 conditions, 11163 events. 7567/11163 cut-off events. For 261327/261336 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 65776 event pairs, 3257 based on Foata normal form. 9/11113 useless extension candidates. Maximal degree in co-relation 68379. Up to 10366 conditions per place. [2024-06-28 03:07:37,348 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 149 selfloop transitions, 22 changer transitions 0/180 dead transitions. [2024-06-28 03:07:37,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 180 transitions, 1809 flow [2024-06-28 03:07:37,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:07:37,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:07:37,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 03:07:37,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064102564102564 [2024-06-28 03:07:37,350 INFO L175 Difference]: Start difference. First operand has 121 places, 157 transitions, 1325 flow. Second operand 6 states and 158 transitions. [2024-06-28 03:07:37,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 180 transitions, 1809 flow [2024-06-28 03:07:37,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 180 transitions, 1726 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 03:07:37,528 INFO L231 Difference]: Finished difference. Result has 123 places, 161 transitions, 1377 flow [2024-06-28 03:07:37,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1377, PETRI_PLACES=123, PETRI_TRANSITIONS=161} [2024-06-28 03:07:37,528 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2024-06-28 03:07:37,529 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 161 transitions, 1377 flow [2024-06-28 03:07:37,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:37,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:37,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:37,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:07:37,529 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 03:07:37,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:37,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1038333533, now seen corresponding path program 1 times [2024-06-28 03:07:37,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:37,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230037591] [2024-06-28 03:07:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:37,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:38,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:38,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230037591] [2024-06-28 03:07:38,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230037591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:38,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:38,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:07:38,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213915705] [2024-06-28 03:07:38,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:38,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:07:38,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:38,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:07:38,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:07:38,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-28 03:07:38,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 161 transitions, 1377 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:38,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:38,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-28 03:07:38,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:40,093 INFO L124 PetriNetUnfolderBase]: 8528/12484 cut-off events. [2024-06-28 03:07:40,093 INFO L125 PetriNetUnfolderBase]: For 330635/330670 co-relation queries the response was YES. [2024-06-28 03:07:40,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78767 conditions, 12484 events. 8528/12484 cut-off events. For 330635/330670 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 74139 event pairs, 3961 based on Foata normal form. 18/12411 useless extension candidates. Maximal degree in co-relation 78719. Up to 11586 conditions per place. [2024-06-28 03:07:40,214 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 150 selfloop transitions, 20 changer transitions 0/190 dead transitions. [2024-06-28 03:07:40,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 190 transitions, 1876 flow [2024-06-28 03:07:40,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:07:40,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:07:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 03:07:40,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639423076923077 [2024-06-28 03:07:40,215 INFO L175 Difference]: Start difference. First operand has 123 places, 161 transitions, 1377 flow. Second operand 8 states and 193 transitions. [2024-06-28 03:07:40,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 190 transitions, 1876 flow [2024-06-28 03:07:40,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 190 transitions, 1766 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-28 03:07:40,451 INFO L231 Difference]: Finished difference. Result has 128 places, 169 transitions, 1426 flow [2024-06-28 03:07:40,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1426, PETRI_PLACES=128, PETRI_TRANSITIONS=169} [2024-06-28 03:07:40,451 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 73 predicate places. [2024-06-28 03:07:40,451 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 169 transitions, 1426 flow [2024-06-28 03:07:40,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:40,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:40,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:40,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:07:40,452 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:07:40,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:40,452 INFO L85 PathProgramCache]: Analyzing trace with hash -630013465, now seen corresponding path program 1 times [2024-06-28 03:07:40,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:40,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135624674] [2024-06-28 03:07:40,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:40,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:41,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:41,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135624674] [2024-06-28 03:07:41,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135624674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:41,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:41,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:41,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791070255] [2024-06-28 03:07:41,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:41,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:41,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:41,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:41,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:07:41,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 169 transitions, 1426 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:41,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:41,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:07:41,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:43,707 INFO L124 PetriNetUnfolderBase]: 9959/14251 cut-off events. [2024-06-28 03:07:43,707 INFO L125 PetriNetUnfolderBase]: For 406104/406111 co-relation queries the response was YES. [2024-06-28 03:07:43,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94137 conditions, 14251 events. 9959/14251 cut-off events. For 406104/406111 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 82035 event pairs, 3979 based on Foata normal form. 19/14236 useless extension candidates. Maximal degree in co-relation 94087. Up to 12852 conditions per place. [2024-06-28 03:07:43,845 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 149 selfloop transitions, 81 changer transitions 0/239 dead transitions. [2024-06-28 03:07:43,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 239 transitions, 2293 flow [2024-06-28 03:07:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:43,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-28 03:07:43,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235042735042735 [2024-06-28 03:07:43,847 INFO L175 Difference]: Start difference. First operand has 128 places, 169 transitions, 1426 flow. Second operand 9 states and 245 transitions. [2024-06-28 03:07:43,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 239 transitions, 2293 flow [2024-06-28 03:07:44,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 239 transitions, 2196 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 03:07:44,083 INFO L231 Difference]: Finished difference. Result has 134 places, 185 transitions, 1755 flow [2024-06-28 03:07:44,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1755, PETRI_PLACES=134, PETRI_TRANSITIONS=185} [2024-06-28 03:07:44,083 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 79 predicate places. [2024-06-28 03:07:44,083 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 185 transitions, 1755 flow [2024-06-28 03:07:44,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:44,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:44,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:44,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:07:44,084 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:07:44,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:44,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1294416281, now seen corresponding path program 2 times [2024-06-28 03:07:44,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:44,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207940038] [2024-06-28 03:07:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:44,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:45,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:45,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:45,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207940038] [2024-06-28 03:07:45,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207940038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:45,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:45,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:45,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353949898] [2024-06-28 03:07:45,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:45,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:45,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:45,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:45,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:45,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:07:45,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 185 transitions, 1755 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:45,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:45,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:07:45,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:47,365 INFO L124 PetriNetUnfolderBase]: 10201/14653 cut-off events. [2024-06-28 03:07:47,365 INFO L125 PetriNetUnfolderBase]: For 447942/447949 co-relation queries the response was YES. [2024-06-28 03:07:47,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99549 conditions, 14653 events. 10201/14653 cut-off events. For 447942/447949 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 85001 event pairs, 4033 based on Foata normal form. 19/14645 useless extension candidates. Maximal degree in co-relation 99496. Up to 13375 conditions per place. [2024-06-28 03:07:47,523 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 154 selfloop transitions, 82 changer transitions 0/245 dead transitions. [2024-06-28 03:07:47,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 245 transitions, 2563 flow [2024-06-28 03:07:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:47,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-28 03:07:47,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-06-28 03:07:47,525 INFO L175 Difference]: Start difference. First operand has 134 places, 185 transitions, 1755 flow. Second operand 9 states and 243 transitions. [2024-06-28 03:07:47,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 245 transitions, 2563 flow [2024-06-28 03:07:47,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 245 transitions, 2381 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 03:07:47,866 INFO L231 Difference]: Finished difference. Result has 141 places, 194 transitions, 1929 flow [2024-06-28 03:07:47,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1583, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1929, PETRI_PLACES=141, PETRI_TRANSITIONS=194} [2024-06-28 03:07:47,867 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 86 predicate places. [2024-06-28 03:07:47,867 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 194 transitions, 1929 flow [2024-06-28 03:07:47,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:47,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:47,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:47,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:07:47,868 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:07:47,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:47,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1937706041, now seen corresponding path program 3 times [2024-06-28 03:07:47,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:47,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157280695] [2024-06-28 03:07:47,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:47,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:49,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:49,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157280695] [2024-06-28 03:07:49,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157280695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:49,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:49,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:49,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989705469] [2024-06-28 03:07:49,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:49,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:49,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:49,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:49,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:49,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:07:49,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 194 transitions, 1929 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:49,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:49,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:07:49,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:51,376 INFO L124 PetriNetUnfolderBase]: 10385/14964 cut-off events. [2024-06-28 03:07:51,376 INFO L125 PetriNetUnfolderBase]: For 484496/484500 co-relation queries the response was YES. [2024-06-28 03:07:51,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102870 conditions, 14964 events. 10385/14964 cut-off events. For 484496/484500 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 87534 event pairs, 4057 based on Foata normal form. 19/14957 useless extension candidates. Maximal degree in co-relation 102814. Up to 13655 conditions per place. [2024-06-28 03:07:51,552 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 156 selfloop transitions, 87 changer transitions 0/252 dead transitions. [2024-06-28 03:07:51,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 252 transitions, 2743 flow [2024-06-28 03:07:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-28 03:07:51,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170940170940171 [2024-06-28 03:07:51,554 INFO L175 Difference]: Start difference. First operand has 141 places, 194 transitions, 1929 flow. Second operand 9 states and 242 transitions. [2024-06-28 03:07:51,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 252 transitions, 2743 flow [2024-06-28 03:07:51,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 252 transitions, 2543 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-28 03:07:51,933 INFO L231 Difference]: Finished difference. Result has 147 places, 201 transitions, 2072 flow [2024-06-28 03:07:51,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2072, PETRI_PLACES=147, PETRI_TRANSITIONS=201} [2024-06-28 03:07:51,937 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 92 predicate places. [2024-06-28 03:07:51,938 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 201 transitions, 2072 flow [2024-06-28 03:07:51,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:51,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:51,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:51,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:07:51,938 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:07:51,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:51,939 INFO L85 PathProgramCache]: Analyzing trace with hash 411181113, now seen corresponding path program 4 times [2024-06-28 03:07:51,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:51,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621146985] [2024-06-28 03:07:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:51,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:53,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:53,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621146985] [2024-06-28 03:07:53,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621146985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:53,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:53,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:07:53,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523901754] [2024-06-28 03:07:53,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:53,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:07:53,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:53,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:07:53,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:07:53,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:07:53,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 201 transitions, 2072 flow. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:53,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:53,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:07:53,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:55,808 INFO L124 PetriNetUnfolderBase]: 10346/14897 cut-off events. [2024-06-28 03:07:55,808 INFO L125 PetriNetUnfolderBase]: For 509773/509777 co-relation queries the response was YES. [2024-06-28 03:07:55,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102579 conditions, 14897 events. 10346/14897 cut-off events. For 509773/509777 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 86881 event pairs, 3743 based on Foata normal form. 19/14890 useless extension candidates. Maximal degree in co-relation 102521. Up to 12656 conditions per place. [2024-06-28 03:07:55,980 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 138 selfloop transitions, 107 changer transitions 0/254 dead transitions. [2024-06-28 03:07:55,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 254 transitions, 2792 flow [2024-06-28 03:07:55,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:07:55,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:07:55,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-28 03:07:55,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149572649572649 [2024-06-28 03:07:55,982 INFO L175 Difference]: Start difference. First operand has 147 places, 201 transitions, 2072 flow. Second operand 9 states and 241 transitions. [2024-06-28 03:07:55,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 254 transitions, 2792 flow [2024-06-28 03:07:56,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 254 transitions, 2598 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 03:07:56,398 INFO L231 Difference]: Finished difference. Result has 151 places, 202 transitions, 2147 flow [2024-06-28 03:07:56,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2147, PETRI_PLACES=151, PETRI_TRANSITIONS=202} [2024-06-28 03:07:56,400 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 96 predicate places. [2024-06-28 03:07:56,400 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 202 transitions, 2147 flow [2024-06-28 03:07:56,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:56,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:07:56,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:07:56,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:07:56,400 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:07:56,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:07:56,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1946072075, now seen corresponding path program 1 times [2024-06-28 03:07:56,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:07:56,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408305025] [2024-06-28 03:07:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:07:56,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:07:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:07:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:07:58,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:07:58,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408305025] [2024-06-28 03:07:58,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408305025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:07:58,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:07:58,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:07:58,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682200498] [2024-06-28 03:07:58,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:07:58,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:07:58,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:07:58,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:07:58,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:07:58,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-28 03:07:58,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 202 transitions, 2147 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:07:58,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:07:58,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-28 03:07:58,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:07:59,931 INFO L124 PetriNetUnfolderBase]: 8947/13229 cut-off events. [2024-06-28 03:07:59,931 INFO L125 PetriNetUnfolderBase]: For 442406/442410 co-relation queries the response was YES. [2024-06-28 03:08:00,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90925 conditions, 13229 events. 8947/13229 cut-off events. For 442406/442410 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 80131 event pairs, 3636 based on Foata normal form. 3/13150 useless extension candidates. Maximal degree in co-relation 90866. Up to 12351 conditions per place. [2024-06-28 03:08:00,074 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 204 selfloop transitions, 19 changer transitions 0/233 dead transitions. [2024-06-28 03:08:00,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 233 transitions, 2771 flow [2024-06-28 03:08:00,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:08:00,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:08:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 03:08:00,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:08:00,075 INFO L175 Difference]: Start difference. First operand has 151 places, 202 transitions, 2147 flow. Second operand 7 states and 182 transitions. [2024-06-28 03:08:00,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 233 transitions, 2771 flow [2024-06-28 03:08:00,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 233 transitions, 2492 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 03:08:00,557 INFO L231 Difference]: Finished difference. Result has 151 places, 206 transitions, 2017 flow [2024-06-28 03:08:00,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1868, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2017, PETRI_PLACES=151, PETRI_TRANSITIONS=206} [2024-06-28 03:08:00,558 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 96 predicate places. [2024-06-28 03:08:00,558 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 206 transitions, 2017 flow [2024-06-28 03:08:00,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:00,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:00,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:00,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:08:00,558 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:08:00,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash -458405575, now seen corresponding path program 1 times [2024-06-28 03:08:00,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:00,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239295090] [2024-06-28 03:08:00,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:00,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:02,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:02,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239295090] [2024-06-28 03:08:02,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239295090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:02,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:02,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:08:02,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889901093] [2024-06-28 03:08:02,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:02,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:08:02,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:02,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:08:02,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:08:02,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-28 03:08:02,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 206 transitions, 2017 flow. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:02,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:02,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-28 03:08:02,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:04,342 INFO L124 PetriNetUnfolderBase]: 9104/13391 cut-off events. [2024-06-28 03:08:04,342 INFO L125 PetriNetUnfolderBase]: For 519182/519217 co-relation queries the response was YES. [2024-06-28 03:08:04,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93809 conditions, 13391 events. 9104/13391 cut-off events. For 519182/519217 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 80628 event pairs, 3921 based on Foata normal form. 20/13272 useless extension candidates. Maximal degree in co-relation 93749. Up to 12480 conditions per place. [2024-06-28 03:08:04,489 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 193 selfloop transitions, 22 changer transitions 0/235 dead transitions. [2024-06-28 03:08:04,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 235 transitions, 2613 flow [2024-06-28 03:08:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:08:04,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:08:04,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 03:08:04,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47836538461538464 [2024-06-28 03:08:04,491 INFO L175 Difference]: Start difference. First operand has 151 places, 206 transitions, 2017 flow. Second operand 8 states and 199 transitions. [2024-06-28 03:08:04,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 235 transitions, 2613 flow [2024-06-28 03:08:04,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 235 transitions, 2494 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 03:08:04,910 INFO L231 Difference]: Finished difference. Result has 154 places, 209 transitions, 2044 flow [2024-06-28 03:08:04,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1898, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2044, PETRI_PLACES=154, PETRI_TRANSITIONS=209} [2024-06-28 03:08:04,910 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 99 predicate places. [2024-06-28 03:08:04,910 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 209 transitions, 2044 flow [2024-06-28 03:08:04,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:04,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:04,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:08:04,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:08:04,911 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:08:04,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:04,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1364534614, now seen corresponding path program 1 times [2024-06-28 03:08:04,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:04,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908413289] [2024-06-28 03:08:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:04,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:05,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:05,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:05,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908413289] [2024-06-28 03:08:05,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908413289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:05,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:05,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:08:05,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225426035] [2024-06-28 03:08:05,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:05,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:08:05,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:05,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:08:05,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:08:05,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:08:05,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 209 transitions, 2044 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:05,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:05,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:08:05,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:07,780 INFO L124 PetriNetUnfolderBase]: 10444/15128 cut-off events. [2024-06-28 03:08:07,780 INFO L125 PetriNetUnfolderBase]: For 628089/628108 co-relation queries the response was YES. [2024-06-28 03:08:07,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108734 conditions, 15128 events. 10444/15128 cut-off events. For 628089/628108 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 89499 event pairs, 4712 based on Foata normal form. 17/15079 useless extension candidates. Maximal degree in co-relation 108673. Up to 14272 conditions per place. [2024-06-28 03:08:08,099 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 193 selfloop transitions, 11 changer transitions 0/223 dead transitions. [2024-06-28 03:08:08,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 223 transitions, 2562 flow [2024-06-28 03:08:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:08:08,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:08:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-28 03:08:08,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-28 03:08:08,101 INFO L175 Difference]: Start difference. First operand has 154 places, 209 transitions, 2044 flow. Second operand 5 states and 122 transitions. [2024-06-28 03:08:08,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 223 transitions, 2562 flow [2024-06-28 03:08:08,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 223 transitions, 2440 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 03:08:08,468 INFO L231 Difference]: Finished difference. Result has 153 places, 213 transitions, 2039 flow [2024-06-28 03:08:08,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2039, PETRI_PLACES=153, PETRI_TRANSITIONS=213} [2024-06-28 03:08:08,468 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 98 predicate places. [2024-06-28 03:08:08,469 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 213 transitions, 2039 flow [2024-06-28 03:08:08,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:08,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:08,469 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 03:08:08,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:08:08,469 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:08:08,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1005133188, now seen corresponding path program 1 times [2024-06-28 03:08:08,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:08,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490597083] [2024-06-28 03:08:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:08,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:09,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:09,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490597083] [2024-06-28 03:08:09,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490597083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:09,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:09,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:08:09,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724143868] [2024-06-28 03:08:09,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:09,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:08:09,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:08:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:08:09,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:08:09,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 213 transitions, 2039 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:09,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:09,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:08:09,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:12,190 INFO L124 PetriNetUnfolderBase]: 11298/16149 cut-off events. [2024-06-28 03:08:12,191 INFO L125 PetriNetUnfolderBase]: For 754270/754317 co-relation queries the response was YES. [2024-06-28 03:08:12,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123704 conditions, 16149 events. 11298/16149 cut-off events. For 754270/754317 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 94585 event pairs, 4880 based on Foata normal form. 16/16046 useless extension candidates. Maximal degree in co-relation 123642. Up to 15249 conditions per place. [2024-06-28 03:08:12,344 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 210 selfloop transitions, 30 changer transitions 0/250 dead transitions. [2024-06-28 03:08:12,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 250 transitions, 2735 flow [2024-06-28 03:08:12,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:08:12,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:08:12,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 03:08:12,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:08:12,346 INFO L175 Difference]: Start difference. First operand has 153 places, 213 transitions, 2039 flow. Second operand 7 states and 182 transitions. [2024-06-28 03:08:12,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 250 transitions, 2735 flow [2024-06-28 03:08:12,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 250 transitions, 2646 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-28 03:08:12,705 INFO L231 Difference]: Finished difference. Result has 157 places, 217 transitions, 2125 flow [2024-06-28 03:08:12,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2125, PETRI_PLACES=157, PETRI_TRANSITIONS=217} [2024-06-28 03:08:12,705 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 102 predicate places. [2024-06-28 03:08:12,706 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 217 transitions, 2125 flow [2024-06-28 03:08:12,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:12,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:12,706 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 03:08:12,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:08:12,706 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:08:12,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:12,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1713491642, now seen corresponding path program 2 times [2024-06-28 03:08:12,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:12,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225226006] [2024-06-28 03:08:12,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:12,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:13,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:13,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225226006] [2024-06-28 03:08:13,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225226006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:13,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:13,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:08:13,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251507432] [2024-06-28 03:08:13,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:13,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:08:13,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:13,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:08:13,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:08:13,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:08:13,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 217 transitions, 2125 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:13,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:13,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:08:13,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:16,298 INFO L124 PetriNetUnfolderBase]: 11376/16266 cut-off events. [2024-06-28 03:08:16,298 INFO L125 PetriNetUnfolderBase]: For 807326/807379 co-relation queries the response was YES. [2024-06-28 03:08:16,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128548 conditions, 16266 events. 11376/16266 cut-off events. For 807326/807379 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 95285 event pairs, 4882 based on Foata normal form. 16/16168 useless extension candidates. Maximal degree in co-relation 128485. Up to 15295 conditions per place. [2024-06-28 03:08:16,453 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 212 selfloop transitions, 39 changer transitions 0/261 dead transitions. [2024-06-28 03:08:16,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 261 transitions, 3101 flow [2024-06-28 03:08:16,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:08:16,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:08:16,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 03:08:16,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027472527472527 [2024-06-28 03:08:16,454 INFO L175 Difference]: Start difference. First operand has 157 places, 217 transitions, 2125 flow. Second operand 7 states and 183 transitions. [2024-06-28 03:08:16,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 261 transitions, 3101 flow [2024-06-28 03:08:16,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 261 transitions, 2971 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-28 03:08:16,882 INFO L231 Difference]: Finished difference. Result has 161 places, 228 transitions, 2339 flow [2024-06-28 03:08:16,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2339, PETRI_PLACES=161, PETRI_TRANSITIONS=228} [2024-06-28 03:08:16,883 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 106 predicate places. [2024-06-28 03:08:16,883 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 228 transitions, 2339 flow [2024-06-28 03:08:16,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:16,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:16,883 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 03:08:16,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:08:16,884 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:08:16,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:16,884 INFO L85 PathProgramCache]: Analyzing trace with hash -953580384, now seen corresponding path program 1 times [2024-06-28 03:08:16,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:16,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137380973] [2024-06-28 03:08:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:16,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:17,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:17,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137380973] [2024-06-28 03:08:17,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137380973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:17,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:17,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:08:17,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077315465] [2024-06-28 03:08:17,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:17,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:08:17,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:17,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:08:17,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:08:18,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:08:18,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 228 transitions, 2339 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:18,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:18,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:08:18,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:08:20,765 INFO L124 PetriNetUnfolderBase]: 11409/16302 cut-off events. [2024-06-28 03:08:20,765 INFO L125 PetriNetUnfolderBase]: For 885969/886044 co-relation queries the response was YES. [2024-06-28 03:08:20,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131661 conditions, 16302 events. 11409/16302 cut-off events. For 885969/886044 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 95702 event pairs, 4554 based on Foata normal form. 20/16173 useless extension candidates. Maximal degree in co-relation 131596. Up to 15223 conditions per place. [2024-06-28 03:08:20,927 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 202 selfloop transitions, 43 changer transitions 0/268 dead transitions. [2024-06-28 03:08:20,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 268 transitions, 3060 flow [2024-06-28 03:08:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:08:20,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:08:20,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 03:08:20,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47596153846153844 [2024-06-28 03:08:20,928 INFO L175 Difference]: Start difference. First operand has 161 places, 228 transitions, 2339 flow. Second operand 8 states and 198 transitions. [2024-06-28 03:08:20,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 268 transitions, 3060 flow [2024-06-28 03:08:21,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 268 transitions, 2918 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-06-28 03:08:21,435 INFO L231 Difference]: Finished difference. Result has 167 places, 238 transitions, 2453 flow [2024-06-28 03:08:21,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2453, PETRI_PLACES=167, PETRI_TRANSITIONS=238} [2024-06-28 03:08:21,436 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 112 predicate places. [2024-06-28 03:08:21,436 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 238 transitions, 2453 flow [2024-06-28 03:08:21,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:21,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:08:21,436 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 03:08:21,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:08:21,436 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:08:21,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:08:21,437 INFO L85 PathProgramCache]: Analyzing trace with hash 190976636, now seen corresponding path program 3 times [2024-06-28 03:08:21,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:08:21,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810036254] [2024-06-28 03:08:21,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:08:21,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:08:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:08:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:08:22,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:08:22,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810036254] [2024-06-28 03:08:22,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810036254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:08:22,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:08:22,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:08:22,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654173731] [2024-06-28 03:08:22,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:08:22,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:08:22,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:08:22,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:08:22,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:08:22,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:08:22,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 238 transitions, 2453 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:08:22,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:08:22,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:08:22,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand